Product Details | LOCK WASHER

5310-00-012-0381 A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces

Part Alternates: MS3533727, MS35337-27, N408P8, XX0020682, XX002-0682, D1107624A4, D11076-24A4, FFW84, 104299, 120381, 12Z30388, 12Z3038-8, 2433, 34827S7, 34827S7S8, 5310-00-012-0381, 00-012-0381, 5310000120381, 000120381

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1963 00-012-0381

Drawings & Photos | NSN 5310-00-012-0381


Demand History | NSN 5310-00-012-0381

Part Number Request Date QTY Origin
FFW84 2025-03-86 1 US
FFW84 2025-03-85 1 United States
MS3533727 2018-08-218 150 United States

Cross Reference | NSN 5310-00-012-0381

Part Number Cage Code Manufacturer
104299 61465 GARWOOD/FELLER INC GARWOOD WINCH DIV
120381 12204 DAIMLER CHRYSLER
120381 18876 U S ARMY AVIATION AND MISSILE COMMAND
120381 24617 GENERAL MOTORS CORP
120381 31007 NAVISTAR INTL CORP
120381 56442 DIAMOND REO TRUCK CO
12Z3038-8 94135 NAVAL ORDNANCE STANDARDS
2433 24975 PRESTOLITE ELECTRIC INCORPORATED
2433 35510 PRESTOLITE ELECTRIC INC
34827S7 23040 FORD MOTOR CO FORD PARTS AND SERVICE DIV
34827S7S8 23040 FORD MOTOR CO FORD PARTS AND SERVICE DIV
D11076-24A4 91340 MET-PRO CORPORATION
FFW84 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES
MS35337-27 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS
N408P8 24446 GENERAL ELECTRIC CO
XX002-0682 H2229 RDM TECHNOLOGY B.V.

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Technical Data | NSN 5310-00-012-0381

Characteristic Specifications
HARDNESS RATING 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
STYLE DESIGNATOR 108 SPLIT HELICAL-RIGHT HAND
HOLE DIAMETER 0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM
OUTSIDE DIAMETER 0.678 INCHES MAXIMUM
MATERIAL THICKNESS 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM
NONDEFINITIVE SPEC/STD DATA 1 STYLE AND A CLASS
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FFW84
MANUFACTURERS CODE 96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MS35337-27

Restrictions/Controls & Freight Information | NSN 5310-00-012-0381

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 194160 WASHER OR GASKETS, IRON OR STEEL,
Less than car load rating U 50
Less than truck load rating U 50.0
Water commodity Code 713 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable