External Tooth Lock Washers
Bolts backing off from vibration? External tooth lock washers bite into the screw head and bearing surface to keep joints tight, often holding harder than split or internal tooth styles. Run zinc plated steel for everyday service, grab countersunk styles for flat head screws, step up to magnetic 410 stainless when corrosion and heat show up.
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External Tooth Lock Washers
External tooth lock washers made from alloy steel with zinc plating for corrosion resistance. Teeth engage fastener heads to help prevent loosening and improve load distribution. Available in common SAE and fractional sizes for general fastening and assembly applications.
| Item # | Bolt Size | Material | Finish | Package Qty | |||
|---|---|---|---|---|---|---|---|
|
|
374200
|
#6
|
Alloy Steel
|
Zinc Plated
|
100
|
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|
|
374202
|
#8
|
Alloy Steel
|
Zinc Plated
|
100
|
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|
|
374203
|
#10
|
Alloy Steel
|
Zinc Plated
|
100
|
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|
|
374201
|
#12
|
Alloy Steel
|
Zinc Plated
|
100
|
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|
|
374204
|
1/4"
|
Alloy Steel
|
Zinc Plated
|
100
|
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|
|
374205
|
5/16"
|
Alloy Steel
|
Zinc Plated
|
100
|
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|
|
374206
|
3/8"
|
Alloy Steel
|
Zinc Plated
|
100
|
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|
|
374207
|
7/16"
|
Alloy Steel
|
Zinc Plated
|
100
|
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|
|
374208
|
1/2"
|
Alloy Steel
|
Zinc Plated
|
100
|
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|
|
374209
|
9/16"
|
Alloy Steel
|
Zinc Plated
|
50
|
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|
|
374210
|
5/8"
|
Alloy Steel
|
Zinc Plated
|
50
|
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|
|
374212
|
3/4"
|
Alloy Steel
|
Zinc Plated
|
50
|
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410 Stainless Steel External Tooth Lock Washers
410 stainless steel external tooth lock washers. Made from magnetic 410 stainless steel with external serrated teeth that bite into mating surfaces to resist loosening and improve retention. Suitable for general fastening applications where corrosion resistance and locking are needed.
| Item # | Bolt Size | Material | Package Qty | |||
|---|---|---|---|---|---|---|
|
|
333406
|
#6
|
410 Stainless Steel
|
100
|
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|
|
333408
|
#8
|
410 Stainless Steel
|
100
|
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|
|
333410
|
#10
|
410 Stainless Steel
|
100
|
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|
|
333412
|
#12
|
410 Stainless Steel
|
100
|
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|
|
333440
|
1/4"
|
410 Stainless Steel
|
100
|
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|
|
333450
|
5/16"
|
410 Stainless Steel
|
100
|
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|
|
333460
|
3/8"
|
410 Stainless Steel
|
100
|
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|
|
333470
|
7/16"
|
410 Stainless Steel
|
100
|
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Countersunk External Tooth Lock Washers
Countersunk external tooth lock washers for countersunk bolt applications, available for No. 10 and No. 14 bolts. Steel finish resists rotation while external teeth bite the mating surface to improve locking and reduce loosening under vibration. Suited for assembly and repair tasks.
| Item # | Bolt Size | Outside Diameter | Make | Package Qty | |||
|---|---|---|---|---|---|---|---|
|
|
131213
|
#10
|
11/32"
|
Ford
|
100
|
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|
|
131214
|
#14
|
7/16"
|
Ford
|
100
|
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Metric External Tooth Washers
Metric external tooth washers made from zinc-plated steel. External teeth bite the bearing surface and fastened material to resist loosening and improve vibration resistance compared to split lock washers. Suitable for general fastening applications.
| Item # | Bolt Size | Finish | Package Qty | |||
|---|---|---|---|---|---|---|
|
|
457006
|
M6
|
Zinc Plated
|
100
|
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|
|
457008
|
M8
|
Zinc Plated
|
100
|
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|
|
457010
|
M10
|
Zinc Plated
|
100
|
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|
|
457012
|
M12
|
Zinc Plated
|
100
|
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|
|
457014
|
M14
|
Zinc Plated
|
100
|
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|
|
457016
|
M16
|
Zinc Plated
|
100
|
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|
|
457018
|
M18
|
Zinc Plated
|
50
|
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12 options | Item #:
374200
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8 options | Item #:
333406
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2 options | Item #:
131213
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7 options | Item #:
457006
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