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Tooth Lock Washers , Steel (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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| Buy Tooth Lock Washers from one of our FCH Network Members | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 9/16 | 9/16 internal l/w steel zinc trivalent shakeproof # 1226-08 b18.21.1 | 8405 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #6 | #6 internal/external tooth l/w zinc trivalent clear b18.21.1 | 14300 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #6 | #6 steel ext tooth lockwasher zinc trivalent clear b18.21.1 | 118654 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #4 | #4 external tooth lockwashers steel zinc trivalent clear b18.21.1 | 39300 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 combination internal external tooth l/w steel zinc b18.21.1 | 7800 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 external tooth l/w steel zinc trivalent clear b18.21.1 | 92700 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | #8 external tooth lockwasher steel zinc trivalent clear b18.21.1 | 95500 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/2 | 1/2 external tooth lockwasher steel zinc trivalent clear b18.21.1 | 500 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #12 | #12 external tooth lockwasher zinc trivelant clear b18.21.1 | 18760 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/4 | 1/4 ext tooth lockwasher steel zinc trivalent clear b18.21.1 | 30462 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 external tooth lockwashers zinc trivalent b18.21.1 | 20700 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #2 | #2 internal tooth lockwasher steel trivalent zinc b18.21.1 | 7500 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #3 | #3 int. tooth washer zinc b18.21.1 | 6585 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #4 | #4 internal tooth lockwasher steel zinc trivalent clear b18.21.1 | 11000 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #6 | #6 internal tooth lockwasher steel zinc trivalent clear b18.21.1 | 1000 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | #8 internal tooth lockwasher zinc trivalent clear b18.21.1 | 49000 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 internal tooth lockwasher zinc trivalent clear b18.21.1 | 242488 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/4 | 1/4 internal tooth lockwasher steel zinc trivalent clear b18.21.1 | 2200 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/2 | 1/2 int. tooth washer trivalent zinc b18.21.1 | 3500 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 steel internal tooth lockwasher zinc tri clear b18.21.1 | 5500 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #6 | #6 internal lock washer zinc (shakeproof) b18.21.1 | 1 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 ext tooth l/w hrd stl znc b18.21.1 | 1264 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Black Oxide | #10 | #10 int tooth l/w hrd stl blk ox wax b18.21.1 | 2579 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 int tooth l/w hrd stl znc b18.21.1 | 8538 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #12 | #12 ext tooth l/w hrd stl znc b18.21.1 | 5097 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/4 | 1/4 ext tooth l/w hrd stl znc b18.21.1 | 5300 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Black Oxide | 1/4 | 1/4 int tooth l/w hrd stl blk ox wax b18.21.1 | 1840 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/4 | 1/4 int tooth l/w hrd stl znc b18.21.1 | 14150 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #2 | #2 int tooth l/w hrd stl znc b18.21.1 | 2900 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 ext tooth l/w hrd stl znc b18.21.1 | 6487 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 int tooth l/w hrd stl znc b18.21.1 | 10600 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 3/8 | 3/8 ext tooth l/w hrd stl znc b18.21.1 | 4000 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 3/8 | 3/8 hvy duty int tooth l/w hrd stl znc b18.21.1 | 243 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 3/8 | 3/8 int tooth l/w hrd stl znc b18.21.1 | 7286 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 7/16 | 7/16 ext tooth l/w hrd stl znc b18.21.1 | 350 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 7/16 | 7/16 int tooth l/w hrd stl pln b18.21.1 | 4200 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 7/16 | 7/16 int tooth l/w hrd stl znc b18.21.1 | 972 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 15/32 | 15/32 int tooth l/w radio hrd stl znc b18.21.1 | 600 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #4 | #4 int tooth l/w hrd stl znc b18.21.1 | 5400 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/2 | 1/2 ext tooth l/w hrd stl znc b18.21.1 | 5820 |
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| SII | IN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | #8 external tooth lockwasher zinc cr+3 ( b18.21.1 | 31600 |
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| SII | IN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 zinc finish internal tooth lock washer b18.21.1 | 47037 |
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| SII | IN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 7/16 | 7/16 zinc finish internal tooth lock washer b18.21.1 | 400 |
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| SII | IN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 zinc finish external tooth lock washer b18.21.1 | 39633 |
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| SII | IN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/4 | 1/4 zinc finish external tooth lock washer b18.21.1 | 36571 |
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| SII | IN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/8 | 5/8 zinc finish external tooth lock washer b18.21.1 | 5400 |
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| SII | IN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 3/4 | 3/4 zinc finish external tooth lock washer b18.21.1 | 2200 |
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| SII | IN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 internal tooth lock washer zinc) b18.21.1 | 6930 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #4 | #4 internal lock zinc b18.21.1 | 11314 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #6 | #6 internal lock zinc b18.21.1 | 400 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #6 | #6 internal lock zinc b18.21.1 | 380 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | #8 external lock zinc b18.21.1 | 2173 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | #8 external lock zinc b18.21.1 | 50 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | #8 external lock zinc b18.21.1 | 200 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | #8 internal lock zinc b18.21.1 | 2440 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | #8 internal lock zinc b18.21.1 | 588 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 external lock zinc b18.21.1 | 47 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 external lock zinc b18.21.1 | 2900 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 internal lock zinc b18.21.1 | 70 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #12 | #12 external lock zinc b18.21.1 | 300 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #12 | #12 external lock zinc b18.21.1 | 5000 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/4 | 1/4 external lock zinc b18.21.1 | 161 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/4 | 1/4 internal lock zinc b18.21.1 | 647 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/2 | 1/2 external lock zinc b18.21.1 | 329 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/2 | 1/2 external lock zinc b18.21.1 | 60 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/2 | 1/2 internal lock zinc (s) b18.21.1 | 700 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 10 x 96 | no 10 countersink tooth lock zinc plated (96 hrs salt spray test white rust) rohs b18.21.1 | 121122 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | #10 external tooth l/w trivalent clear b18.21.1 | 40000 |
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| Cascade | OR | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/8 | extern tooth lock s b18.21.1 | 11000 |
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| Cascade | OR | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #10 | extern tooth lock s b18.21.1 | 10000 |
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| B & K FAST | PA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 combo tooth lockwashers zinc b18.21.1 | 1146 |
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| B & K FAST | PA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #6 | #6 external tooth lockwashers zinc b18.21.1 | 5450 |
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| B & K FAST | PA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 external tooth lockwashers zinc b18.21.1 | 94005 |
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| B & K FAST | PA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 3/8 | 3/8 external tooth lockwashers zinc b18.21.1 | 1487 |
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| B & K FAST | PA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Yellow | 1/2 | 1/2 external tooth lockwashers zinc/yel b18.21.1 | 9668 |
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| B & K FAST | PA | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 1 | 1 extra duty heavy lockwashers plain b18.21.1 | 4046 |
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| B & K FAST | PA | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 1 1/2 | 1 1/2 internal tooth lockwashers plain b18.21.1 | 75 |
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| B & K FAST | PA | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 1 3/4 | 1 3/4 internal tooth lockwashers b18.21.1 | 29 |
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| Wurth | Ont | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 3/8 | wsh ext lw a st (zn) 3/8 b18.21.1 | 9200 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | internal tooth l/w b18.21.1 | 34,652 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 7/16 | internal tooth l/w b18.21.1 | 4,586 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 7/16 | external tooth l/w b18.21.1 | 4,316 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #8 | external tooth l/w b18.21.1 | 4,375 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #12 | internal tooth l/w b18.21.1 | 3,000 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 7/8 | external tooth l/w b18.21.1 | 350 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 7/8 | internal tooth l/w b18.21.1 | 245 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #6 | internal tooth l/w b18.21.1 | 200 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/2 | internal tooth l/w b18.21.1 | 166 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #4 | external tooth l/w b18.21.1 | 147 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/8 | internal tooth l/w b18.21.1 | 100 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 3/8 | external tooth l/w b18.21.1 | 90 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | #6 | external tooth l/w b18.21.1 | 78 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 1 | 1 external tooth l/w b18.21.1 | 35 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1 1/8 | internal tooth l/w b18.21.1 | 24 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1 | 1 internal tooth l/w b18.21.1 | 19 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 9/16 | internal tooth l/w b18.21.1 | 25 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Galvanized | 5/8 | external tooth l/w mech b18.21.1 | 1,368 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 1/4 | external tooth l/w b18.21.1 | 405 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | Steel | Galvanized | 7/8 | external tooth l/w mech b18.21.1 | 296 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 7/16 | 7/16 ext. tooth lock washer b18.21.1 | 3,235 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 3/4 | 3/4 ext. tooth lock washer b18.21.1 | 4,309 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 1 | 1 ext. tooth lock washer b18.21.1 | 541 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 9/16 | 9/16 ext. tooth lock washer b18.21.1 | 1,743 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | #10 | #10 int. tooth lock washer b18.21.1 | 86,437 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 7/16 | 7/16 int. tooth lock washer b18.21.1 | 55 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 5/8 | 5/8 int. tooth lock washer b18.21.1 | 4,628 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 5/16 | 5/16 int. tooth lock washer b18.21.1 | 9,030 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | #12 | #12 ext. tooth lock washer b18.21.1 | 12,324 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | #4 | #4 ext. tooth lock washer b18.21.1 | 1,455 |
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| All Size | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | #8 | #8 int. tooth lock washer b18.21.1 | 10,017 |
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