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5/16 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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| Search Results Sponsored by Fasteners & Metal Products, your source for Int. & Ext. Tooth Lock Washers. For more results, visit fastmetalproducts.com | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Buy Tooth Lock Washers from one of our FCH Network Members | ||||||||
| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 ext tooth l/w 400 s/s b18.21.1 | 958 |
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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.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 int tooth l/w 400 s/s b18.21.1 | 1165 |
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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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| GLF | OH | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 external tooth lock stl zc b18.21.1 () () () | 628 |
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| GLF | OH | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 external tooth lock 410 s/s b18.21.1 () () () | 65 |
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| GLF | OH | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 internal tooth lock 410 s/s b18.21.1 () () () | 1322 |
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| GLF | OH | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 internal tooth lock stl zc b18.21.1 () () () | 16674 |
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| GLF | OH | Tooth Lock Washer (Int. & Ext.) | Steel | Cadmium/Yellow | 5/16 | internal lock MS35333-41 b18.21.1 () () () | 740 |
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| GLF | OH | Tooth Lock Washer (Int. & Ext.) | Steel | Cadmium/Yellow | 5/16 | 5/16 steel external/tooth cad/yellow MS35335-34 b18.21.1 () () () | 250 |
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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 | 9000 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | 5/16 ext tooth lockwashers s/s b18.21.1 | 1474 |
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| Irwin Ind | Ont | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 external tooth lockwasher 410 stainless steel b18.21.1 | 854 |
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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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| ASMC | IL | Tooth Lock Washer (Int. & Ext.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | 5/16 ext tooth lockwasher ss18-8 b18.21.1 | 3,705 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 ext tooth l/w 400 s/s b18.21.1 | 300 |
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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 | 300 |
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| Ababa | CA | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 int tooth l/w 400 s/s b18.21.1 | 100 |
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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 | 600 |
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| Alma Bolt | MI | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 zinc plated internal star washer b18.21.1 | 1114 |
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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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| JET FITTING | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 internal tth l/w stl zinc 240080 b18.21.1 | 4277 |
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| JET FITTING | CA | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 external tth l/w 410 ss 4-EXT-31 b18.21.1 | 3822 |
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| JET FITTING | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Black Oxide | 5/16 | 5/16 internal tooth lock steel black oxide 31WIB b18.21.1 | 110 |
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| Standard | MA | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 external tooth washer 410 stainless steel b18.21.1 | 170300 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 extra duty lock trivalent znc b18.21.1 | 10084 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 5/16 x 410 | 5/16 external lock 410 b18.21.1 | 100 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 5/16 x 410 | 5/16 external lock 410 b18.21.1 | 800 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 5/16 x 410 | 5/16 internal lock 410 b18.21.1 | 200 |
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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 | 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.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 external lockwashers stainless 410 b18.21.1 | 6860 |
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| Marine Fasteners | FL | Tooth Lock Washer (Int. & Ext.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | 5/16 external tooth l/w 18-8ss b18.21.1 | 684420 |
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| General F | MI | Tooth Lock Washer (Int. & Ext.) | Steel | Dip-Spin, Spray-Spin Basecoat + Topcoats (Dacromet, Doerken, Geomet, Magni, etc.) | 5/16 x 565 | hf 5/16 internal external tooth lock magni 565 b18.21.1 | 8,354 |
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| General F | MI | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 ext countersunk lw zn b18.21.1 | 2600 |
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| General F | MI | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Yellow | 5/16 | 5/16 ext tooth lw zn ylw b18.21.1 | 7980 |
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| OSSCO | RI | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 external internal lock plated b18.21.1 | 646 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 external lockwasher zinc b18.21.1 | 100 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 external tooth l/w zinc b18.21.1 | 6625 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Yellow | 5/16 | 5/16 extra heavy split-lock washer steel yellow zinc b18.21.1 | 2719 |
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| QFC | TX | Tooth Lock Washer (Int. & Ext.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | 5/16 internal tooth lock washer ss b18.21.1 | 702 |
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| Bostwick | IN | Tooth Lock Washer (Int. & Ext.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | 5/16 internal tooth l/w 18-8 stainless b18.21.1 | 108 |
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| JET FITTING | CA | Tooth Lock Washer (Int. & Ext.) | Silicon Bronze | Painted | 5/16 | 5/16 internal star lock washer bronze b18.21.1 | 250 |
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| JET FITTING | CA | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 5/16 internal star lock washer stainless steel 410 b18.21.1 | 200 |
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| JET FITTING | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | washer lock 5/16 zinc plated internal star b18.21.1 | 5245 |
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| JET FITTING | CA | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | washer lock external star 5/16 stainless steel 410 b18.21.1 | 955 |
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| JET FITTING | CA | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 external lock washer steel zinc b18.21.1 | 1349 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 410 ss internal tooth l/w b18.21.1 | 146 |
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| THRDFAST | FL | Tooth Lock Washer (Int. & Ext.) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 5/16 | 410 ss external tooth l/w b18.21.1 | 15,214 |
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| THRDFAST | TN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | external tooth l/w b18.21.1 | 1,300 |
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| KBS | TN | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 external tooth l/w pltd b18.21.1 | 13,234 |
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| THRDFAST | AL | Tooth Lock Washer (Int. & Ext.) | Steel | Plain | 5/16 | external tooth l/w b18.21.1 | 44 |
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| THRDFAST | AL | Tooth Lock Washer (Int. & Ext.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | 18-8 ss internal tooth l/w b18.21.1 | 50 |
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| THRDFAST | MS | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | external tooth l/w b18.21.1 | 65 |
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| THRDFAST | OK | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | external tooth l/w b18.21.1 | 952 |
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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.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | 5/16 ext. tooth lock washer s/s b18.21.1 | 1,682 |
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| Davis | IL | Tooth Lock Washer (Int. & Ext.) | Steel | Zinc/Clear | 5/16 | 5/16 extt tooth lockwasher-steel zinc b18.21.1 | 9,100 |
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