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#6 Tooth Lock Washers (ASME B18. 21.1)

Tooth Lock Washers are often used with machine screws in electrical applications, and are usually smaller diameter An Internal Tooth Lock Washer has teeth around the center hole, while an External Tooth Lock Washer has teeth around the outside. Sometimes tooth lock washers can be concave, and have both internal and external teeth. Larger diameter External Tooth Lock washers are often used to lock nuts onto shafting. In this case the external tabs are bent up to lock the nut in place.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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Irwin IndOntTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 internal/external tooth l/w zinc trivalent clear b18.21.114300
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Irwin IndOntTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 steel ext tooth lockwasher zinc trivalent clear b18.21.1 118654
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Irwin IndOntTooth Lock Washer (Int. & Ext.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6#6 external tooth lockwasher 18.8 stainless steel b18.21.117195
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Irwin IndOntTooth Lock Washer (Int. & Ext.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6#6 int tooth lockwashers stainless steel b18.21.1 19000
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Irwin IndOntTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 internal tooth lockwasher steel zinc trivalent clear b18.21.1 1000
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GLFOHTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 external tooth lock stl zc b18.21.1 () () ()18792
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GLFOHTooth Lock Washer (Int. & Ext.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6#6 external tooth lock 18-8 s/s b18.21.1 () () ()585
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GLFOHTooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6#6 internal tooth lock 410 s/s b18.21.1 () () ()2700
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GLFOHTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 internal tooth lock stl zc b18.21.1 () () ()29817
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GLFOHTooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Passivated#6#6 ss/410 internal/tooth- MS35333-71 b18.21.1 () () ()381
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GLFOHTooth Lock Washer (Int. & Ext.)SteelCadmium/Yellow#6#6 steel internal/tooth- cad/yellow MS35333-37 b18.21.1 () () ()7900
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GLFOHTooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Passivated#6#6 ss/410 external/tooth- MS35335-58 b18.21.1 () () ()900
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GLFOHTooth Lock Washer (Int. & Ext.)SteelPlain#6countersink lock MS35790-1 b18.21.1 () () ()410
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GLFOHTooth Lock Washer (Int. & Ext.)SteelPlain#6#6 bronze internal/tooth- MS35333-105 b18.21.1 () () ()17650
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AbabaCATooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 internal lock washer zinc (shakeproof) b18.21.11
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AbabaCATooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6#6 ext tooth l/w 400 s/s b18.21.12050
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AbabaCATooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 ext tooth l/w hrd stl znc b18.21.1975
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AbabaCATooth Lock Washer (Int. & Ext.)SteelPlain#6#6 int/ext tooth l/w hrd stl pln b18.21.13000
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AbabaCATooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6#6 int tooth l/w 400 s/s b18.21.13200
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AbabaCATooth Lock Washer (Int. & Ext.)SteelBlack Oxide#6#6 int tooth l/w hrd stl blk ox wax b18.21.17660
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AbabaCATooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 int tooth l/w hrd stl znc b18.21.150686
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AbabaCATooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6#6 ext tooth l/w 400 s/s b18.21.1700
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AbabaCATooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 ext tooth l/w hrd stl znc b18.21.11300
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AbabaCATooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6#6 int tooth l/w 400 s/s b18.21.1800
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AbabaCATooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 int tooth l/w hrd stl znc b18.21.11600
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AbabaCATooth Lock Washer (Int. & Ext.)Phosphor BronzePhosphate#6#6 int tooth l/w phosphorus brnz b18.21.11500
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EximS'poreTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6-32 x 5/16screw hex head [type-b]steel hardened blue zn thread forming w. ext l/w# 6-32 x 5/16 in. b18.21.184857
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JET FITTINGCATooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6#6 internal tth l/w 410 ss 4-INT-6 b18.21.146643
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JET FITTINGCATooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6#6 external tth l/w 410 sst 4-EXT-6 b18.21.11618
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JET FITTINGCATooth Lock Washer (Int. & Ext.)SteelPlain#6#6 external tth l/w stl zi 239030 b18.21.185963
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StandardMATooth Lock Washer (Int. & Ext.)Phosphor BronzePainted#6#6 external tooth lock washer phosphor bronze b18.21.12000
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QFCTXTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 internal lock zinc b18.21.1400
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QFCTXTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 internal lock zinc b18.21.1380
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QFCTXTooth Lock Washer (Int. & Ext.)Phosphor BronzePlain#6#6 external tooth l/w phos bronze b18.21.124226
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QFCTXTooth Lock Washer (Int. & Ext.)SteelPlain#6 x 410#6 external tooth lock 410 b18.21.120
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QFCTXTooth Lock Washer (Int. & Ext.)Silicon BronzePlain#6#6 external tooth l/w sili brnz b18.21.15534
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QFCTXTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 int/external tooth l/w zinc b18.21.18818
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QFCTXTooth Lock Washer (Int. & Ext.)SteelZinc/Black#6#6 internal tooth l/w black zinc b18.21.15500
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QFCTXTooth Lock Washer (Int. & Ext.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6#6 internal tooth l/w 18-8 s/s b18.21.1900
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QFCTXTooth Lock Washer (Int. & Ext.)SteelPlain#6 x 410#6 external lock 410 b18.21.1800
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B & K FASTPATooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 external tooth lockwashers zinc b18.21.15450
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OSSCORITooth Lock Washer (Int. & Ext.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6#6 external tooth l/w 18-8 304 b18.21.11,400
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OSSCORITooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 cntsk external lock plated b18.21.1700
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OSSCORITooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 external tooth l/w plated b18.21.113,722
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OSSCORITooth Lock Washer (Int. & Ext.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6#6 internal tooth l/w 18-8 304 b18.21.1585
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QFCTXTooth Lock Washer (Int. & Ext.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6#6 external tooth l/w 18-8 s/s b18.21.12964
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QFCTXTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 internal tooth l/w zinc b18.21.18019
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QFCTXTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 internal tooth l/w trivalent zinc b18.21.11021
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JET FITTINGCATooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6washer lock internal star #6 stainless steel 410 b18.21.120300
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JET FITTINGCATooth Lock Washer (Int. & Ext.)SteelZinc/Yellow#6#6 internal star lock washer steel zinc yellow b18.21.1315
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JET FITTINGCATooth Lock Washer (Int. & Ext.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6washer lock #6 stainless steel400 external star b18.21.1315
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JET FITTINGCATooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6washer lock #6 steel zinc plated external star b18.21.136600
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JET FITTINGCATooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6washer lock #6 steel zinc plated int/external star b18.21.11000
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JET FITTINGCATooth Lock Washer (Int. & Ext.)Silicon BronzePlain#6washer lock #6 brz internal star b18.21.11054
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THRDFASTFLTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6internal tooth l/w b18.21.1200
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THRDFASTFLTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6external tooth l/w b18.21.178
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THRDFASTFLTooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6410 ss internal tooth l/w b18.21.150
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KBSTNTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6#6 ext. tooth ctsk. l/w pltd b18.21.1100
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THRDFASTALTooth Lock Washer (Int. & Ext.)400 Stainless (405, 410,416,420,430 etc.)Plain#6410 ss external tooth l/w b18.21.1206
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THRDFASTALTooth Lock Washer (Int. & Ext.)SteelZinc/Clear#6external tooth l/w b18.21.15753
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THRDFASTTooth Lock Washer (Int. & Ext.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#618-8 ss internal tooth l/w b18.21.1300
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All SizeTXTooth Lock Washer (Int. & Ext.)SteelPlain#6#6 internal tooth washer black b18.21.119,341
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