Product Details | RECESSED WASHER

5310-00-498-1256 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: S613764383101, S6137-64383-101, 5310-00-498-1256, 00-498-1256, 5310004981256, 004981256

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 10 OCT 1969 00-498-1256

Drawings & Photos | NSN 5310-00-498-1256


Cross Reference | NSN 5310-00-498-1256

Part Number Cage Code Manufacturer
S6137-64383-101 78286 SIKORSKY AIRCRAFT CORPORATION

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Technical Data | NSN 5310-00-498-1256

Characteristic Specifications
MATERIAL STEEL COMP 4340 OVERALL
SURFACE TREATMENT CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
STYLE DESIGNATOR 28 RECESSED BOTH SIDES
HOLE DIAMETER 0.390 INCHES NOMINAL
OUTSIDE DIAMETER 1.000 INCHES NOMINAL
RECESS DEPTH 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM
MATERIAL THICKNESS 0.122 INCHES MINIMUM AND 0.123 INCHES MAXIMUM
BOTTOM RECESS ANGLE 90.0 DEGREES NOMINAL
TOP RECESS ANGLE 90.0 DEGREES NOMINAL
SURFACE FINISH 90.0 MICROINCHES ALL SURFACES
SPECIAL FEATURES USED ON H-3
III MINIMUM TENSILE STRENGTH 150000 POUNDS PER SQUARE INCH
MANUFACTURERS CODE 78286
DESIGN CONTROL REFERENCE S6137-64383-101

Restrictions/Controls & Freight Information | NSN 5310-00-498-1256

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 SG 403 SCMS/GUED
5215 Thurlow St, Suite 5, Bldg 70C
Wright-Patterson AFB OH 45433
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity
Air Special Handling Z No special handling required.
Special Handling Code Z unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 5310-00-498-1256

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 CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each