Product Details | FLAT WASHER

5310-01-307-4378 A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.

Part Alternates: FFW92, FF-W-92, 5310-01-307-4378, 01-307-4378, 5310013074378, 013074378

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 11 SEP 1989 01-307-4378

Drawings & Photos | NSN 5310-01-307-4378


Demand History | NSN 5310-01-307-4378

Part Number Request Date QTY Origin
FFW92 2025-06-161 16 United States
5310-01-307-4378 2023-12-339 429 DIBBS
FF-W-92 2023-01-18 60 Saudi Arabia
5310-01-307-4378 2022-11-311 150 DIBBS
5310-01-307-4378 2022-10-298 150 DIBBS
5310-01-307-4378 2022-09-255 26 DIBBS
5310-01-307-4378 2022-08-236 26 DIBBS
5310-01-307-4378 2022-06-172 148 DIBBS
5310-01-307-4378 2022-06-158 148 DIBBS
5310-01-307-4378 2020-12-352 45 DIBBS
5310-01-307-4378 2020-12-344 45 DIBBS
5310-01-307-4378 2019-12-351 14 DIBBS
5310-01-307-4378 2019-12-343 14 DIBBS
5310-01-307-4378 2019-12-340 92 DIBBS
5310-01-307-4378 2019-11-332 92 DIBBS
5310-01-307-4378 2019-08-232 14 DIBBS
5310-01-307-4378 2019-08-224 14 DIBBS
FFW92 2018-07-207 2 United States
FFW92 2016-08-217 21 US
5310-01-307-4378 2014-08-238 27 DIBBS
5310-01-307-4378 2014-08-230 12 DIBBS
5310-01-307-4378 2014-08-219 6 DIBBS
5310-01-307-4378 2013-04-112 80 DIBBS
FFW92 2011-10-304 495 United States
5310-01-307-4378 2011-04-102 110 DIBBS
5310-01-307-4378 2011-02-38 93 DIBBS
5310-01-307-4378 2010-04-100 46 DIBBS

Cross Reference | NSN 5310-01-307-4378

Part Number Cage Code Manufacturer
FF-W-92 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES

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Technical Data | NSN 5310-01-307-4378

Characteristic Specifications
MATERIAL STEEL COMP 316 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HOLE DIAMETER 0.563 INCHES NOMINAL
PERIPHERAL SHAPE STYLE 1 ROUND
OVERALL DIAMETER 2.000 INCHES NOMINAL
CENTER HOLE SHAPE STYLE 1 ROUND
CROSS-SECTIONAL SHAPE STYLE 1 RECTANGULAR
THICKNESS 0.125 INCHES NOMINAL
NONDEFINITIVE SPEC/STD DATA A TYPE AND 1 GRADE AND B CLASS
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FF-W-92

Restrictions/Controls & Freight Information | NSN 5310-01-307-4378

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:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
NMF Description 194160 WASHER OR GASKETS, IRON OR STEEL,
Less than car load rating
Less than truck load rating U 50.0
Water commodity Code 713 unknown
Originating Activity Code KZ Defense Supply Center Philadelphia
Philadelphia, PA 19101
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

Management | NSN 5310-01-307-4378

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesHDIRECT DELIVERY UNDER A CENTRAL CONTRACT # (VENDOR STOCKED) Issue, transfer or shipment is not subject to specialized controls other than those imposed by IMM/Service/Agency supply policy. 1. The item is centrally managed and procured. 2. Normal issue is by direct shipment from the vendor to the user at the order of the ICP or IMM. However, orders may be shipped from stock by ICP or IMM distribution facilities when the vendor's minimum order quantity is not met, or when stocks are being drawn down. 3. Requisitions and fund citations will be submitted in accordance with IMM/Service/Agency Requisitioning Procedures. 4. Generally delivery will be made within applicable Service/Agency guidelines addressing customer required timeframe.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
BX : Box