FCH News

#1 Castellated Nuts

Hex Castle Nuts or Castellated Nuts have notches on one end, which resemble the serrated tops of castle parapets. These nuts are used with a bolt with cross-drilled holes, so that a cotter pin can pass through the nut and into a hole in a bolt shank, thus preventing the nut from loosening. The notched end is turned down slightly, allowing the cotter pin to be bent around the nut. Often used in machinery, shafts and automotive applications.

180 results, (click on any line for more information)

Search Results Sponsored by Perigee Manufacturing, your source for Castellated Nuts. For more results, visit   perigeemfg.com
SupplierLocTypeMaterialFinishSizeDescriptionQty 
PerigeeMICastle Nut (Hex)Grade 5Zinc/Yellow1/2-20 x 3/4 x 9/161/2-20 x 3/4 x 9/16 hex castle nut b18.2.2159
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PerigeeMICastle Nut (Hex)Grade 5Zinc/Yellow1/2-20 x 3/4 x 9/161/2-20 x 3/4 x 9/16 hex castle nut b18.2.2115
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PerigeeMICastle Nut (Hex)Grade 5Zinc/Clear1/2-20 x 3/4 x 9/161/2-20 x 3/4 x 9/16 hex castle nut b18.2.2100
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PerigeeMICastle Nut (Hex)Grade 5Zinc/Yellow1/2-20 x 3/4 x 9/161/2-20 x 3/4 x 9/16 hex castle nut b18.2.213
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YANKEENHCastle Nut (Hex)SteelZinc/Clear1 1/2-121 1/2-12 hex castle slotted nut steel zinc plated5
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AmericanNYCastle Nut (Hex)SteelPlain1 1/8-12castle nut85
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AmericanNYCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1 1/4-12castle nut 18-8 30441
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JacksonMSCastle Nut (Hex)Grade 5Zinc/Clear1-121-12 military pitch grade 5 hex castle nut zinc clear20
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METRO INDOHCastle Nut (Hex)SteelPlain1 1/4-12castle nut sae50
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ACCURATEILCastle Nut (Hex)SteelZinc/Clear1 1/2-12castle nut16
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ACCURATEILCastle Nut (Hex)SteelPlain1 1/4-12castle jam nut68
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AmericanNYCastle Nut (Hex)SteelPlain1 1/4-12castle nut10
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CenturyFLCastle Nut (Hex)SteelCadmium/Yellow1-12an320-15 58
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SRFALCastle Nut (Hex)SteelPlain1 1/4-12castle nut-
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EndriesWICastle Nut (Hex)Grade 5Plain1 1/8-121-1/8-12 grade 5 castle nut plain4
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EndriesWICastle Nut (Hex)SteelPlain1 3/8-121-3/8-12 castle nut plain34
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EndriesWICastle Nut (Hex)SteelZinc/Clear1 1/8-121-1/8-12 castle nut zinc95
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NutsBoltsNECastle Nut (Hex)SteelPlain1 1/8-121 1/8-12 castle nut plain10
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NutsBoltsNECastle Nut (Hex)SteelPlain1 1/4-121 1/4-12 castle nut plain6
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NorthernMNCastle Nut (Hex)Grade 5Zinc/Yellow1 1/4-12s/o 1-1/4-12 nf gr5 castle nut zinc/yellow46
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ISSCOMOCastle Nut (Hex)Grade 2Zinc/Clear1 1/8-12hex castle nut plated140
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ISSCOMOCastle Nut (Hex)Grade 2Plain1 1/2-12hex castle nut finish22
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WDMBIACastle Nut (Hex)Grade 2Zinc/Clear1 1/2-12nut hex castle gr2 (zn) 1 1/2-1239
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ZAL INDUSCACastle Nut (Hex)SteelZinc/Clear1 3/8-121 3/8-12 castle nut pltd14
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ZAL INDUSCACastle Nut (Hex)SteelPlain1 3/8-121 3/8-12 castle nut7
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ZAL INDUSCACastle Nut (Hex)SteelPlain1 1/4-121 1/4-12 castle nut9
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WDMBIACastle Nut (Hex)SteelPlain1 1/2-12nut hex castle st (pl) 1 1/2-12 (W000)27
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LibertyILCastle Nut (Hex)SteelZinc/Clear1 1/4-12hex castle nut zinc14
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LibertyILCastle Nut (Hex)SteelZinc/Yellow1 3/8-12hex castle nut & &2
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HayesCACastle Nut (Hex)SteelPlain1 1/2-121 1/2-12 castle nut pln29
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Bostwick INCastle Nut (Hex)Grade 5Plain1 1/8-121 1/8-12 castle nut gr 5 b18.2.228
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Bostwick INCastle Nut (Hex)Grade 5Plain1 3/8-121 3/8-12 castle nut gr 5 b18.2.22
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Valley NuWACastle Nut (Hex)Grade 5Plain1 1/2-12gr5 nf hex castle nut pl1
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Bostwick INCastle Nut (Hex)SteelPlain1 1/8-121-1/8-12 nf hex castle nut59
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WeaverWACastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 castle nut 18-8 ss9
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SunPackFLCastle Nut (Hex)SteelZinc/Clear1/2-131/2-13 castle lock nut zinc5
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LibertyILCastle Nut (Hex)SteelZinc/Clear1/2-13hex castle nut1,000
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SunPackFLCastle Nut (Hex)SteelZinc/Clear1/2-13castle lock nut5
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StandardMACastle Nut (Hex)BrassPlain1/2-131/2-13 castle nut brass b18.2.23
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DeltaTXCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13fin castle nut 18-8 sst 1/2-1354
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Kanebridge ILCastle Nut (Hex)SteelZinc/Clear1/2-131/2-13 castle nut zinc3.750
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HBBOLTCACastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13castle nut 18-8ss153
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HayesCACastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 castle nut 18-8ss3
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HodellOHCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 castle nut 18-8 s/s nc250
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Fastener OHCastle Nut (Hex)SteelPlain1/2-13castle nut 1/2-13 304 25
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HodellOHCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 castle nut 18-8 s/s nc250
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ACCURATEILCastle Nut (Hex)SteelPlain1-14castle nuts (fine thread)84
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YANKEENHCastle Nut (Hex)SteelPlain1-141-14 hex castle slotted nut1
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YANKEENHCastle Nut (Hex)SteelZinc/Clear1-141-14 hex castle slotted nut zinc plated20
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GLFOHCastle Nut (Hex)SteelZinc/Clear1-141-14 castle nut stl zc b18.2.2 () () ()96
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MFSKSCastle Nut (Hex)SteelZinc/Clear1-14castle nut41
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MFSKSCastle Nut (Hex)SteelZinc/Yellow1-14castle nut43
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NutsBoltsNECastle Nut (Hex)SteelPlain1-141-14 castle nut plain10
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StandardMACastle Nut (Hex)BrassPlain1-141-14 castle nut brass b18.2.226
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Future FastenerTXCastle Nut (Hex)SteelZinc/Clear1-141-14 castle nut plt202
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JacksonMSCastle Nut (Hex)BrassPlain1-14nf hex castle nut59
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GlobalCACastle Nut (Hex)SteelPlain1-14castle nut150
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DeltaTXCastle Nut (Hex)SteelZinc/Clear1-14fin castle nut steel zinc nf 1-14 (FINE THREAD)62
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ZAL INDUSCACastle Nut (Hex)SteelZinc/Clear1-141-14 castle nut pltd10
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Kanebridge ILCastle Nut (Hex)SteelZinc/Clear1-141-14 castle nut zinc1.250
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MTPCACastle Nut (Hex)Grade 5Zinc/Clear1-141-14 gr.5 zn thin slotted castle nuts40
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Kanebridge ILCastle Nut (Hex)Grade 5Zinc/Clear1-141-14 castle nut grade 5 zinc1.250
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1-14 x 1 1/2 x 11-14 x 1-1/2 x 1 castellated airframe nut b18.2.222
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1-14 x 1 1/2 x 11-14 x 1-1/2 x 1 castellated airframe nut b18.2.219
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PerigeeMICastle Nut (Hex)SteelZinc/Clear1-14 x 1 1/2 x 11-14 x 1-1/2 x 1 hex castle nut b18.2.280
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PerigeeMICastle Nut (Hex)SteelZinc/Clear1-14 x 1 1/2 x 11-14 x 1-1/2 x 1 hex castle nut b18.2.252
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EndriesWICastle Nut (Hex)Grade 5Plain1-14 grade 5 castle nut plain15
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MTPCACastle Nut (Hex)Grade 5Zinc/Clear1-141 -14 gr.5 zn thin slotted castle nutsstock
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WDMBIACastle Nut (Hex)Grade 5Plain1-14nut hex castle gr5 (pl) 1-14 (W000) (W000) (W000)953
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Bostwick INCastle Nut (Hex)SteelPlain1-14castle nut1-14 plain576
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OlanderCACastle Nut (Hex)SteelZinc/Clear1-141-14 hex castle nut stl zn non-rohs ()40
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HodellOHCastle Nut (Hex)Grade 8Plain1 9/16-181-9/16-18 special castle nut gr 878
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HodellOHCastle Nut (Hex)Grade 8Plain1 9/16-181-9/16-18 special castle nut gr 878
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WeaverWACastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 castle nut 18-8 ss23
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WeaverWACastle Nut (Hex)SteelZinc/Clear1/2-201/2-20 castle nut zinc292
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METRO INDOHCastle Nut (Hex)SteelPlain1/2-20castle nut sae167
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CenturyFLCastle Nut (Hex)SteelPlain1/2-201/2-20 castle nut (STEEL BLACK OXIDE) (STEEL BLACK OXIDE) 5
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GLFOHCastle Nut (Hex)SteelCadmium/Yellow1/2-20castle nut AN310-8 b18.2.2 () () ()388
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SISAZCastle Nut (Hex)SteelPlain1/2-201/2-20 castle hex nut steel plain8
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MFSKSCastle Nut (Hex)SteelZinc/Clear1/2-20thin castle nut, mag inspected1276
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NutsBoltsNECastle Nut (Hex)SteelPlain1/2-201/2-20 castle nut9
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GUIDONNJCastle Nut (Hex)Grade 2Zinc/Clear1/2-2019
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Future FastenerTXCastle Nut (Hex)SteelBlack Oxide1/2-201/2-20 finished castle nut blk216
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DeltaTXCastle Nut (Hex)SteelZinc/Clear1/2-20fin castle nut steel zinc nf 1/2-20 (FINE THREAD)553
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All SizeTXCastle Nut (Hex)SteelPlain1/2-201/2-20 slotted castle nut b18.2.21,261
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All SizeTXCastle Nut (Hex)SteelPlain1/2-201/2-20 slotted high castle nut b18.2.21,271
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ISSCOMOCastle Nut (Hex)Grade 2Zinc/Clear1/2-20hex castle nut800
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Alma BoltMICastle Nut (Hex)SteelPlain1/2-20SAE castle nut981
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LibertyILCastle Nut (Hex)SteelZinc/Clear1/2-20hex castle nut56
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Kanebridge ILCastle Nut (Hex)SteelZinc/Clear1/2-201/2-20 castle nut zinc3.750
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LibertyILCastle Nut (Hex)SteelNickel1/2-20hex castle nut plate plate75
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LibertyILCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20hex castle nut 18-8 s/s 18-8 s/s25
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HBBOLTCACastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20castle nuts 18-8ss135
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HBBOLTCACastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20castle nut 18-8ss136
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Kanebridge ILCastle Nut (Hex)Grade 5Zinc/Clear1/2-201/2-20 castle nut grade 5 zinc3.750
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PerigeeMICastle Nut (Hex)Grade 5Zinc/Yellow1/2-20 x 3/4 x 9/161/2-20 x 3/4 x 9/16 hex castle nut b18.2.2159
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PerigeeMICastle Nut (Hex)Grade 5Zinc/Yellow1/2-20 x 3/4 x 9/161/2-20 x 3/4 x 9/16 hex castle nut b18.2.2115
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PerigeeMICastle Nut (Hex)Grade 5Zinc/Clear1/2-20 x 3/4 x 9/161/2-20 x 3/4 x 9/16 hex castle nut b18.2.2100
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PerigeeMICastle Nut (Hex)Grade 5Zinc/Yellow1/2-20 x 3/4 x 9/161/2-20 x 3/4 x 9/16 hex castle nut b18.2.213
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PerigeeMICastle Nut (Hex)SteelCadmium/Yellow1/2-201/2-20 x 3/4 x 9/16 castellated airframe nut b18.2.2400
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PerigeeMICastle Nut (Hex)SteelCadmium/Yellow1/2-201/2-20 x 3/4 x 1/4 hex slotted jam a/f nut b18.2.21942
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 x 3/4 x 1/4 castellated hex shear nut b18.2.21153
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 x 3/4 x 1/4 castellated hex shear nut b18.2.22430
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PerigeeMICastle Nut (Hex)Grade ACadmium1/4-20 x 7/16 x 9/321/4-20 x 7/16 x 9/32 hex castle nut b18.2.293
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PerigeeMICastle Nut (Hex)Grade AZinc/Clear1/2-20 x 3/4 x 9/161/2-20 x 3/4 x 9/16 hex castle nut b18.2.249
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PerigeeMICastle Nut (Hex)SteelCadmium/Yellow1/2-201/2-20 x 3/4 x 9/16 castellated airframe nut b18.2.23525
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HayesCACastle Nut (Hex)BrassPlain1/4-201/4-20 castle nut brass80
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CenturyNYCastle Nut (Hex)SteelCadmium/Yellowan310-8 castle nut5
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GLFOHCastle Nut (Hex)Grade 2HZinc/Yellow1/2-20 hex castle nut a194 2h zy per b633 type-2 | () () ()1
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OlanderCACastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 hx castle nut sst rohs541
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Field FasILCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 castle nut 18-8 ss400
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CenturyNYCastle Nut (Hex)SteelBlack Oxide1/2-20 castle nut steel black oxide5
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Fastener OHCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20hex castle nut 1/4-20 18.8 50
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GLFOHCastle Nut (Hex)SteelCadmium/Yellow1/2-201/2-20 steel castellated nut--cad ii AN320-8 b18.2.2 () () ()700
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AbabaCACastle Nut (Hex)SteelZinc/Clear1/4-281/4-28 castle nut stl znc b18.2.2318
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WeaverWACastle Nut (Hex)SteelZinc/Clear1/4-281/4-28 castle nut zinc197
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RCFastAZCastle Nut (Hex)SteelCadmium/Yellow1/4-28castle nut, 1/4-28, stl cad AN310-4125
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METRO INDOHCastle Nut (Hex)SteelPlain1/4-28castle nut sae1493
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ACCURATEILCastle Nut (Hex)SteelZinc/Clear1/4-28castle nuts484
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CenturyFLCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow1/4-28an310c4 castle nut 1017
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AmericanNYCastle Nut (Hex)BrassPlain1/4-28castle nut1100
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MFSKSCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#1/4-28castle nut33
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NutsBoltsNECastle Nut (Hex)SteelPlain1/4-281/4-28 castle nut506
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DeltaTXCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28fin castle nut 18-8 sst nf 1/4-28 (FINE THREAD)80
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AIHAZCastle Nut (Hex)SteelCadmium/Yellow1/4-28nut aluminum AN320-4291
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AIHAZCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-281/4-28-3b nut s/s pass 304ss AN320C470
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Alma BoltMICastle Nut (Hex)SteelPlain1/4-28SAE castle nut750
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Kanebridge ILCastle Nut (Hex)SteelZinc/Clear1/4-281/4-28 castle nut zinc50,000
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LibertyILCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow1/4-28an310-c4 1/4-28 castle nut ss 304ss3,100
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LibertyILCastle Nut (Hex)SteelPlain1/4-28hex castle nut100
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LibertyILCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28hex castle nut 18-8 s/s 18-8 s/s1,050
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HBBOLTCACastle Nut (Hex)SteelZinc/Clear1/4-28castle nut300
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HBBOLTCACastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28castle nut 18-8 ss68
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Kanebridge ILCastle Nut (Hex)Grade 5Zinc/Clear1/4-281/4-28 castle nut grade 5 zinc50,000
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow1/4-281/4-28 x 7/16 x 9/32 hex castellated airframe nut b18.2.24533
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PerigeeMICastle Nut (Hex)SteelPhosphate1/4-28 x 7/16 x 9/321/4-28 x 7/16 x 9/32 hex castle nut b18.2.2636
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CenturyNYCastle Nut (Hex)SteelCadmium/Yellowan320-4 castle nut steel nut-castle45
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CenturyNYCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plainms21225-4 nut self locking hex hd160
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CenturyFLCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28ms21225-4 nut self locking hex hd 1010
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CenturyNYCastle Nut (Hex)SteelCadmium/Yellowan310-4 castle nut273
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RCFastAZCastle Nut (Hex)SteelCadmium/Yellow#10-32 x 1 1/32an3-10a bolt (10-32)350
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RCFastAZCastle Nut (Hex)SteelCadmium/Yellow#10-32nut-castle (10-32 3b) an310-390
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AmericanNYCastle Nut (Hex)SteelNickel#10-32castle nut nickle pl2000
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GLFOHCastle Nut (Hex)SteelCadmium/Yellow#10-32 x 1 1/3210-32x1-1/32 (5/8-grip) steel hex/screw cad AN3-10A b18.2.2 () () ()121
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SISAZCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow#10-323/8 hex non-locking castellated nut full height cad ii 304ss AN310C375
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CenturyFLCastle Nut (Hex)SteelCadmium/Yellow#10-32 x 1 1/32an3-10a nut 37
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DeltaTXCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32fin castle nut 18-8 sst nf 10-3297
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AIHAZCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32nut 304ss AN320C3313
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LibertyILCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32hex castle nut 18-8 s/s100
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HayesCACastle Nut (Hex)SteelCadmium/Yellow#10-32 x 2 1/32an3-20a 10-32 x 2-1/32 hex c/s cad ii101
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RapidNYCastle Nut (Hex)SteelCadmium/Yellow#10-32 x 1 1/32bolt-machine aircraft alloy steel 10-32 unf-3a 0.189-0.186 dia. x 1.031 length (0.625 grip) cadmium per ams-qq-416 type-2 class 2 undrilled head & shank AN3-10A100
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CenturyNYCastle Nut (Hex)SteelCadmium/Yellowan320-3 castle nut steel2
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CenturyNYCastle Nut (Hex)SteelCadmium/Yellowan310-3 castle nut45
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ZAL INDUSCACastle Nut (Hex)SteelPlain1 3/8-61 3/8-6 castle nut5
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HayesCACastle Nut (Hex)SteelZinc/Clear1 1/2-61 1/2-6 castle nut zinc191
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HayesCACastle Nut (Hex)SteelPlain1 1/2-61 1/2-6 castle nut pln12
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B & K FASTPACastle Nut (Hex)SteelZinc/Clear1 1/4-71 1/4-7 castle hex nuts zinc b18.2.29
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JacksonMSCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1 1/8-71-1/8-7 nc hex castle nut stainess steel6
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All SizeTXCastle Nut (Hex)SteelPlain1 1/8-71 1/8-7 slotted castle nut b18.2.249
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Kanebridge ILCastle Nut (Hex)SteelZinc/Clear1 1/4-71 1/4-7 castle nut zinc0.500
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LibertyILCastle Nut (Hex)SteelPlain1 1/4-7hex castle nut25
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LibertyILCastle Nut (Hex)SteelZinc/Clear1 1/8-7hex castle nut24
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StandardMACastle Nut (Hex)BrassPlain1-81-8 castle nut brass b18.2.258
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JacksonMSCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8hex castle nut stainess6
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Kanebridge ILCastle Nut (Hex)SteelZinc/Clear1-81-8 castle nut zinc1.250
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THRDFASTALCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-818-8 ss castle nut b18.2.24
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WeaverWACastle Nut (Hex)SteelZinc/Clear10-1.010-1.0 castle nut zinc17
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WeaverWACastle Nut (Hex)SteelZinc/Clear14-2.014-2.0 castle nut zinc16
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WeaverWACastle Nut (Hex)SteelZinc/Clear16-2.016-2.0 castle nut zinc33
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WeaverWACastle Nut (Hex)SteelZinc/Clear18-2.518-2.5 castle nut zinc38
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THRDFASTFLCastle Nut (Hex)SteelPlain1 1/4nf-12 castle nut b18.2.22
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CenturyFLCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32an320c3 682
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CenturyFLCastle Nut (Hex)SteelCadmium/Yellow1/4-28an310-4 castle nut 273
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CenturyFLCastle Nut (Hex)SteelCadmium/Yellow#10-32an310-3 castle nut 45
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THRDFASTFLCastle Nut (Hex)SteelPlain11 nf-14 castle nut b18.2.215
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THRDFASTFLCastle Nut (Hex)SteelZinc/Clear11 nf-14 castle nut b18.2.27
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JacksonMSCastle Nut (Hex)BrassPlain1 1/2nc hex castle nut2
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ACCURATEILCastle Nut (Hex)SteelPlain12-febfinish- castle hex nuts54
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CenturyFLCastle Nut (Hex)SteelCadmium/Yellow1/2-20an310-8 castle nut 5
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CenturyFLCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow#10-32an310c3 castle nut 5
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CenturyNYCastle Nut (Hex)Grade 5Zinc/Clear1-1/4 castellated nut gr5 zinc plated hex nut zinc clear trivalent13
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CenturyFLCastle Nut (Hex)Grade 5Zinc/Clear1 1/41-1/4 castellated nut gr5 zinc plated hex nut zinc clear trivalent 13
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