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Square Nuts , Steel (ASME B18. 2.2)

Square Nuts are just four-sided nuts, but compared to standard hex nuts, square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening. Square nuts are typically mated with square-headed bolts.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
GLFOHSquare NutSteelPlain3/4-103/4-10 hvy square nut stl pln b18.2.2 () () ()10
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GLFOHSquare NutSteelPlain1/2-131/2-13 hvy square nut stl pln b18.2.2 () () ()210
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GLFOHSquare NutSteelPlain1 1/4-71-1/4-7 square nut stl pln b18.2.2 () () ()48
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GLFOHSquare NutSteelGalvanized1/2-131/2-13 square nut stl hdg b18.2.2 () () ()2255
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GLFOHSquare NutSteelPlain3/4-103/4-10 square nut stl pln b18.2.2 () () ()190
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GLFOHSquare NutSteelZinc/Clear3/8-163/8-16 square nut stl zc b18.2.2 () () ()685
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GLFOHSquare NutSteelPlain3/8-163/8-16 square nut stl pln b18.2.2 () () ()2406
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GLFOHSquare NutSteelPlain5/16-185/16-18 square nut stl pln b18.2.2 () () ()1300
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GLFOHSquare NutSteelPlain5/8-115/8-11 square nut stl pln b18.2.2 () () ()2200
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GLFOHSquare NutSteelZinc/Clear1/4-201/4-20 square nut stl zc b18.2.2 () () ()2767
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GLFOHSquare NutSteelPlain1-81-8 sq nut stl pln b18.2.2 () () ()75
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BHAMALSquare NutSteelZinc/Clear#8-328-32 square machine screw nuts zinc b18.2.2100
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BHAMALSquare NutSteelGalvanized7/8-97/8-9 reg. square nuts hdg b18.2.29
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BHAMALSquare NutSteelGalvanized1-81-8 reg sq nut hdg b18.2.2105
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BHAMALSquare NutSteelPlain1/2-131/2-13 reg. square nuts b18.2.285
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BHAMALSquare NutSteelPlain5/8-11 x 35/8-11x3 sq antiro t-hd w/nut c111 b18.2.275
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AbabaCASquare NutSteelGalvanized1-81-8 sq nut stl hdg b18.2.2331
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AbabaCASquare NutSteelZinc/Clear1-81-8 sq nut stl znc b18.2.210
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AbabaCASquare NutSteelZinc/Clear#10-2410-24 sq nut stl znc b18.2.23000
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AbabaCASquare NutSteelZinc/Clear#10-3210-32 sq nut stl znc b18.2.2605
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AbabaCASquare NutSteelPlain1 1/8-71 1/8-7 sq nut stl pln b18.2.25
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AbabaCASquare NutSteelPlain1 1/4-71 1/4-7 sq nut stl pln b18.2.21
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AbabaCASquare NutSteelPlain1 1/2-61 1/2-6 sq nut stl pln b18.2.24
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AbabaCASquare NutSteelGalvanized1/4-201/4-20 sq nut stl hdg b18.2.274
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AbabaCASquare NutSteelPlain1/4-201/4-20 sq nut stl pln b18.2.24175
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AbabaCASquare NutSteelBlack Oxide1/4-201/4-20 sq nut stl blk ox wax b18.2.2978
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AbabaCASquare NutSteelZinc/Clear1/4-201/4-20 sq nut stl znc b18.2.22798
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AbabaCASquare NutSteelZinc/Clear1/4-201/4-20 sq nut chamfered one side stl znc b18.2.22700
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AbabaCASquare NutSteelZinc/Clear5/16-185/16-18 sq nut stl znc b18.2.21200
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AbabaCASquare NutSteelPlain3/8-163/8-16 sq nut stl pln b18.2.21312
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AbabaCASquare NutSteelZinc/Clear3/8-163/8-16 sq nut stl znc b18.2.250
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AbabaCASquare NutSteelPlain1/2-131/2-13 sq nut stl pln b18.2.2863
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AbabaCASquare NutSteelZinc/Clear1/2-131/2-13 sq nut stl znc b18.2.250
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AbabaCASquare NutSteelPlain5/8-115/8-11 sq nut stl pln b18.2.2100
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AbabaCASquare NutSteelGalvanized3/4-103/4-10 sq nut stl hdg b18.2.280
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AbabaCASquare NutSteelZinc/Clear5/8-115/8-11 sq nut stl znc b18.2.215
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Irwin IndOntSquare NutSteelZinc/Clear#10-3210-32 unf square nut steel zinc b18.2.210564
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AbabaCASquare NutSteelZinc/Clear#10-2410-24 sq nut stl znc b18.2.2100
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AbabaCASquare NutSteelZinc/Clear#10-3210-32 sq nut stl znc b18.2.2600
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AbabaCASquare NutSteelZinc/Clear1/4-201/4-20 sq nut stl znc b18.2.291
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AbabaCASquare NutSteelZinc/Clear1/4-201/4-20 sq nut chamfered one side stl znc b18.2.2600
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AbabaCASquare NutSteelPlain3/8-163/8-16 sq nut stl pln b18.2.2300
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AbabaCASquare NutSteelPlain1/2-131/2-13 sq nut stl pln b18.2.2100
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AbabaCASquare NutSteelZinc/Clear#5-405-40 sq nut stl znc b18.2.2300
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AbabaCASquare NutSteelPlain5/8-115/8-11 sq nut stl pln b18.2.250
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AbabaCASquare NutSteelZinc/Clear#8-328-32 sq nut stl znc b18.2.2100
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Alma BoltMISquare NutSteelPlain7/8-97/8-9 square nut b18.2.2324
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Alma BoltMISquare NutSteelPlain1/2-131/2-13 plain finish square nut b18.2.22467
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EximS'poreSquare NutSteelZinc/Black#10-3212.624 x 9.525 x 3.302nut square steel black zn #10-32 unf-2b12.624 x 9.525 x 3.302 mm0.497 x 0.375 x 0.130 in (ansi std) b18.2.220
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EximS'poreSquare NutSteelZinc/Black#10-3212.624 x 9.525 x 3.302nut square steel black trivalent #10-3212.624 x 9.525 x 3.302 mm unf-2b [rohs]0.497 x 0.375 x 0.130 in (ansi std) b18.2.22758
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EximS'poreSquare NutSteelZinc/Clear#6-3210.541 x 7.925 x 2.896nut square steel blue zn #6-3210.541 x 7.925 x 2.896 mm0.415 x 0.312 x 0.114 in (ansi std) b18.2.2326804
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EximS'poreSquare NutSteelZinc/Clear#4-408.407 x 6.350 x 2.489nut square steel blue zn #4-408.407 x 6.350 x 2.489 mm0.331 x 0.250 x 0.098 in (ansi std) b18.2.2305730
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SIIINSquare NutSteelPlain1-81-8 plain square nut b18.2.2125
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General FMISquare NutSteelZinc/Clear1/21/2 sq nut w/handle clr zn gm4345m b18.2.250850
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QFCTXSquare NutSteelPlain3/4 x 6 1/23/4x6 1/2 t-o sb w/fin & sq nt b18.2.21164
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QFCTXSquare NutSteelPlain1/4-201/4-20 square nut a563 a plain finish b18.2.254
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QFCTXSquare NutSteelPlain5/165/16nc plain square nut 321032 b18.2.2152
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QFCTXSquare NutSteelPlain3/8-163/8-16 square nut plain b18.2.2900
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QFCTXSquare NutSteelPlain3/8-163/8-16 square nut plain b18.2.2186
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QFCTXSquare NutSteelPlain3/8-163/8-16 square nut plain b18.2.2704
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QFCTXSquare NutSteelPlain1/2-131/2-13 square nut plain b18.2.240
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QFCTXSquare NutSteelPlain1/2-131/2-13 square nut plain b18.2.23000
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QFCTXSquare NutSteelPlain1/2-131/2-13 sq nut overtapped .021 plain b18.2.2490
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QFCTXSquare NutSteelPlain3/4-103/4-10 square nut plain tap oversized b18.2.2203
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QFCTXSquare NutSteelPlain3/4-103/4-10 square nut plain tap oversized b18.2.2601
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QFCTXSquare NutSteelPlain3/4-103/4-10 square nut plain tap oversized b18.2.21410
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QFCTXSquare NutSteelPlain1-81-8 square nut plain b18.2.225
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QFCTXSquare NutSteelZinc/Clear5/16-185/16-18 square nut zinc b18.2.25430
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QFCTXSquare NutSteelGalvanized1/2-131/2-13 square nut galvanized b18.2.2746
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QFCTXSquare NutSteelPlain1/2-131/2-13 square nut tapped oversize plain b18.2.21150
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QFCTXSquare NutSteelPlain1/2-131/2-13 square nut tapped oversize plain finish domestic b18.2.221
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QFCTXSquare NutSteelPlain1/2-131/2-13 square nut tapped oversize plain finish domestic b18.2.22
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QFCTXSquare NutSteelPlain1/2-131/2-13 square nut tapped oversize plain finish domestic b18.2.2272
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QFCTXSquare NutSteelPlain5/8-115/8-11 square nut plain finish b18.2.2236
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B & K FASTPASquare NutSteelGalvanized1/4-201/4-20 galv square nuts b18.2.229075
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B & K FASTPASquare NutSteelPlain1/2-131/2-13 heavy square nuts plain b18.2.2131
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B & K FASTPASquare NutSteelPlain1-81-8 heavy square nuts plain b18.2.23
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B & K FASTPASquare NutSteelPlain1 1/8-71 1/8-7 heavy square nuts plain b18.2.21
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B & K FASTPASquare NutSteelPlain1 1/41 1/4 heavy square nuts plain b18.2.254
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B & K FASTPASquare NutSteelPlain2-4 1/22-4 1/2 heavy square nuts plain b18.2.29
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B & K FASTPASquare NutSteelPlain3/4-103/4-10 l.h. square nuts plain b18.2.2298
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B & K FASTPASquare NutSteelPlain#5-405/40 square nuts plain b18.2.23800
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B & K FASTPASquare NutSteelZinc/Clear#6-326/32 square nuts zinc b18.2.27177
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B & K FASTPASquare NutSteelZinc/Clear#8-328/32 square nuts zinc b18.2.215200
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B & K FASTPASquare NutSteelZinc/Clear#10-2410/24 square nuts zinc b18.2.219800
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B & K FASTPASquare NutSteelZinc/Clear#12-2412/24 square nuts zinc b18.2.25914
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B & K FASTPASquare NutSteelPlain1/4-201/4-20 square nuts plain b18.2.21200
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B & K FASTPASquare NutSteelPlain5/16-185/16-18 square nuts plain b18.2.246832
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B & K FASTPASquare NutSteelZinc/Clear5/16-185/16-18 square nuts zinc b18.2.26105
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B & K FASTPASquare NutSteelPlain3/8-163/8-16 square nuts plain b18.2.2304
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B & K FASTPASquare NutSteelPlain7/16-147/16-14 square nuts plain b18.2.226296
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B & K FASTPASquare NutSteelPlain1/2-131/2-13 square nuts plain b18.2.21583
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B & K FASTPASquare NutSteelZinc/Clear1/2-131/2-13 square nuts zinc b18.2.230
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B & K FASTPASquare NutSteelPlain5/8-115/8-11 square nuts plain b18.2.2933
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BHAMGASquare NutSteelPlain3/43/4 4140 square nuts b18.2.291
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BHAMGASquare NutSteelPlain1 3/81 3/8 4140 square nuts b18.2.216
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OSSCORISquare NutSteelZinc/Clear#10-2410-24 square nut plated b18.2.22,144
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OSSCORISquare NutSteelPlain#10-3210-32 square nut b18.2.22,247
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OSSCORISquare NutSteelPlain1 1/8-71 1/8-7 square nut b18.2.271
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OSSCORISquare NutSteelZinc/Clear1 1/8-71 1/8-7 square nut plated b18.2.240
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OSSCORISquare NutSteelZinc/Clear#12-2412-24 square nut plated b18.2.2805
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OSSCORISquare NutSteelZinc/Clear1/4-201/4-20 square machine screw nut plated b18.2.21,700
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OSSCORISquare NutSteelZinc/Clear1/4-201/4-20 square nut plated b18.2.22,962
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OSSCORISquare NutSteelPlain5/16-185/16-18 square nut b18.2.24,567
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OSSCORISquare NutSteelPlain7/8-97/8-9 square nut b18.2.238
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OSSCORISquare NutSteelPlain#8-328-32 square nut b18.2.29,065
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OSSCORISquare NutSteelZinc/Clear7/16-147/16-14 square nut plated b18.2.2190
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OSSCORISquare NutSteelZinc/Clear7/16-207/16-20 square nut plated b18.2.2326
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OSSCORISquare NutSteelZinc/Clear1/2-131/2-13 square nut plated b18.2.297
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OSSCORISquare NutSteelPlain5/8-115/8-11 square nut b18.2.21,096
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QFCTXSquare NutSteelZinc/Clear#10-3210-32 square nut zinc b18.2.25000
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QFCTXSquare NutSteelZinc/Clear#6-326-32 square nut zinc b18.2.2907
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QFCTXSquare NutSteelGalvanized3/4-103/4-10 square concave nut hdg b18.2.2148
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QFCTXSquare NutSteelGalvanized3/4-103/4-10 heavy square nut hdg b18.2.2300
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QFCTXSquare NutSteelPlain3/4-103/4-10 square nut b18.2.2800
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QFCTXSquare NutSteelPlain3/4-103/4-10 heavy square nut plain finish b18.2.2111
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QFCTXSquare NutSteelZinc/Clear5/165/16nc bzp square nut b18.2.2150
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QFCTXSquare NutSteelZinc/Clear#10-3210/32 square nut zinc plated b18.2.23000
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PerigeeMISquare NutSteelPlain3/4-10 x 1 1/8 x 21/323/4-10 x 1-1/8 x 21/32 square nut b18.2.2485
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PerigeeMISquare NutSteelPlain5/8-11 x 1 x 35/645/8-11 x 1 x 35/64 square nut b18.2.233
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PerigeeMISquare NutSteelZinc/Clear1-8 x 1 1/2 x 7/81-8 x 1-1/2 x 7/8 square square nut b18.2.299
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JET FITTINGCASquare NutSteelPlain3/816nut square 3/816 steel plain b18.2.2900
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APIIASquare NutSteelZinc/Clear3/4-10hvy sq nut jds 14 a563-a asme b18.2.2 zncl f15 a2c680
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THRDFASTFLSquare NutSteelPlain1/4-20square nut b18.2.26,425
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THRDFASTFLSquare NutSteelZinc/Clear1/4-20square nut b18.2.22,233
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THRDFASTFLSquare NutSteelPlain3/8-16square nut b18.2.21,460
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THRDFASTFLSquare NutSteelZinc/Clear5/16-18square nut b18.2.21,286
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THRDFASTFLSquare NutSteelGalvanized1-8square nut hdg b18.2.2233
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THRDFASTFLSquare NutSteelZinc/Clear3/8-16square nut b18.2.249
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THRDFASTFLSquare NutSteelZinc/Clear1/2-13square nut b18.2.239
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THRDFASTFLSquare NutSteelPlain1 1/4-7square nut b18.2.220
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THRDFASTFLSquare NutSteelGalvanized1 1/4-7square nut hdg b18.2.212
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THRDFASTFLSquare NutSteelGalvanized5/16-18square nut hdg b18.2.2416
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THRDFASTFLSquare NutSteelZinc/Clear1/2-13square nut b18.2.271
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THRDFASTFLSquare NutSteelGalvanized1/2-13square nut hdg b18.2.259
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THRDFASTFLSquare NutSteelZinc/Clear7/8-9square nut b18.2.243
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THRDFASTFLSquare NutSteelZinc/Clear1/4-20square nut b18.2.220
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THRDFASTFLSquare NutSteelGalvanized1-8square nut hdg b18.2.27
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THRDFASTFLSquare NutSteelGalvanized1/4-20square nut hdg b18.2.23
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THRDFASTOKSquare NutSteelPlain5/8-11square nut b18.2.2173
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THRDFASTTNSquare NutSteelZinc/Clear1/2-13square nut b18.2.2964
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THRDFASTTNSquare NutSteelZinc/Clear3/4-10square nut b18.2.287
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THRDFASTTNSquare NutSteelPlain3/4-10square nut b18.2.256
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KBSTNSquare NutSteelPlain9/16-189/16-18 sq track nut b18.2.2100
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KBSTNSquare NutSteelPlain3/4-163/4-16 sq track nut b18.2.2198
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KBSTNSquare NutSteelPlain1 3/4-51-3/4-5 heavy square nut b18.2.252
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KBSTNSquare NutSteelPlain2 1/4-4 1/22 1/4-4.5 heavy square nut b18.2.224
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THRDFASTALSquare NutSteelGalvanized5/8-11square nut hdg b18.2.223000
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THRDFASTMSSquare NutSteelZinc/Clear3/8-16square nut b18.2.244
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THRDFASTFLSquare NutSteelZinc/Clear#12-24square nut b18.2.22114
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THRDFASTFLSquare NutSteelPlain3/8-16heavy square nut b18.2.2233
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THRDFASTFLSquare NutSteelPlain5/8-11square nut b18.2.217
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All SizeTXSquare NutSteelPlain1/4-201/4-20 square nut b18.2.24,503
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All SizeTXSquare NutSteelPlain3/4-103/4-10 square nut plain b18.2.2227
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All SizeTXSquare NutSteelPlain#8-328-32 square nut b18.2.210,800
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All SizeTXSquare NutSteelGalvanized5/8-115/8-11 square nut galv b18.2.2498
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All SizeTXSquare NutSteelPlain7/8-97/8-9 square nut b18.2.273
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All SizeTXSquare NutSteelZinc/Clear3/8-163/8-16 square nut zinc b18.2.250
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DavisILSquare NutSteelZinc/Clear1/4-201/4-20 square nut-steel zinc b18.2.2900
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