Product Details | RECESSED WASHER

5310-00-757-5500 A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes WASHER, CONCAVE, RETAINER, PACKING, and thrust type washers. See also SPACER, SLEEVE; and SPACER, STEPPED.

Part Alternates: S615064044101, S6150-64044-101, 5310-00-757-5500, 00-757-5500, 5310007575500, 007575500

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 09 JUL 1971 00-757-5500

Cross Reference | NSN 5310-00-757-5500

Part Number Cage Code Manufacturer
S6150-64044-101 78286 SIKORSKY AIRCRAFT CORPORATION

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Technical Data | NSN 5310-00-757-5500

Characteristic Specifications
MATERIAL STEEL COMP 4340
MATERIAL DOCUMENT AND CLASSIFICATION AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE
SURFACE TREATMENT OXIDE FILM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-C-13924 CL 1 MIL SPEC SINGLE TREATMENT RESPONSE
COLOR BLACK
HARDNESS RATING 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
HOLE DIAMETER 1.128 INCHES MINIMUM AND 1.131 INCHES MAXIMUM
OUTSIDE DIAMETER 1.375 INCHES NOMINAL
RECESS DIAMETER 1.255 INCHES NOMINAL
MATERIAL THICKNESS 0.089 INCHES MINIMUM AND 0.091 INCHES MAXIMUM
RECESS ANGLE 90.0 DEGREES NOMINAL
SURFACE FINISH 90.0 MICROINCHES ALL SURFACES
TEST DATA DOCUMENT 81349-MIL-I-6868 SPECIFICATION
MANUFACTURERS CODE 78286
DESIGN CONTROL REFERENCE S6150-64044-101

Restrictions/Controls & Freight Information | NSN 5310-00-757-5500

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
Less than truck load rating U 50.0
Water commodity Code 713 unknown
Originating Activity Code KE Naval ICP
Philadelphia, PA 19111
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 5310-00-757-5500

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 CodesYTERMINAL ITEM #(NON-STOCKED ITEMS) Future procurement is not authorized. No wholesale stock is available for issue. 1. Requisitions will not be processed to the wholesale manager. 2. Internal Service/agency requisitioning may be continued in accordance with the Service/agency requisitioning policies.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative