Approved Vendor

Tight-Grip External-Tooth Lock Washers

Manufacturer part: 4340N115

These washers grip flat- and oval-head countersunk screws, so you get a secure hold without overtightening. They resist loosening in applications with constant motion, such as conveyors. Tooth lock washers typically can't be reused because the teeth often get bent when tightened. External Tooth—Teeth on the outside edge bite into both the screw head and the mating surface to lock the assembly in place. Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture. DIN 6798—Best for slightly bumpy or irregular surfaces because the teeth are angled to make even contact with the material.

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Technical data

Specifications

Normalized product attributes for faster comparison and sourcing.

ID
8.4 mm
OD
15.3 mm
ECCN
EAR99
Finish
Zinc Plated
Hardness
Rockwell C35
Material
Steel
Thickness
0.35 mm to 0.45 mm
Washer Type
Tooth, Countersunk
For Screw Size
M8
Tooth Location
External
RoHS Compliance
RoHS 3 (2015/863/EU) Compliant
DFARS Compliance
Specialty Metals COTS-Exempt
REACH Compliance
REACH (EC 1907/2006) (06/27/2024, 241 SVHC) Compliant
USMCA Qualifying
No
Countersink Angle
90°
Country of Origin
Germany, Italy
Schedule B Number
731821.0000
Specifications Met
DIN 6798
System of Measurement
Metric

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SupplierSupplier SKUPriceStockLead timeType
Approved Vendor4340N115$12.05 USDContact supplierContact supplierAuthorized · US distributor

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