Product Details | RECESSED WASHER

5310-00-818-1009 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: A51B2101417, A51B21014-17, 5310-00-818-1009, 00-818-1009, 5310008181009, 008181009

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 18 APR 1972 00-818-1009

Drawings & Photos | NSN 5310-00-818-1009


Cross Reference | NSN 5310-00-818-1009

Part Number Cage Code Manufacturer
A51B21014-17 26512 NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN AEROSPACE
A51B21014-17 61174 NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN AEROSPACE

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Technical Data | NSN 5310-00-818-1009

Characteristic Specifications
MATERIAL STEEL COMP 4130 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-C-8837,TY 2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING 33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM
STYLE DESIGNATOR 26 RECESSED
HOLE DIAMETER 1.010 INCHES MINIMUM AND 1.025 INCHES MAXIMUM
OUTSIDE DIAMETER 1.531 INCHES NOMINAL
RECESS DIAMETER 1.140 INCHES MINIMUM AND 1.160 INCHES MAXIMUM
MATERIAL THICKNESS 0.080 INCHES NOMINAL
RECESS ANGLE 90.0 DEGREES NOMINAL
TEST DATA DOCUMENT 81349-MIL-I-6868 SPECIFICATION
III HEAT TREATMENT AS FABRICATED
MANUFACTURERS CODE 61174
DESIGN CONTROL REFERENCE A51B21014-17

Restrictions/Controls & Freight Information | NSN 5310-00-818-1009

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 5310-00-818-1009

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 CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative