Product Details | RECESSED WASHER

5310-01-237-9392 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: VN9008C, VN900-8C, 21D5C8C, 5310-01-237-9392, 01-237-9392, 5310012379392, 012379392

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 07 AUG 1986 01-237-9392

Drawings & Photos | NSN 5310-01-237-9392


Demand History | NSN 5310-01-237-9392

Part Number Request Date QTY Origin
21D5C8C 2008-01-31 144 US

Cross Reference | NSN 5310-01-237-9392

Part Number Cage Code Manufacturer
21D5C8C 04236 LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN SPACE SYSTEMS
VN900-8C 92215 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS

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Technical Data | NSN 5310-01-237-9392

Characteristic Specifications
MATERIAL IRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
STYLE DESIGNATOR 26 RECESSED
HOLE DIAMETER 0.504 INCHES MINIMUM AND 0.515 INCHES MAXIMUM
OUTSIDE DIAMETER 0.875 INCHES NOMINAL
RECESS DIAMETER 0.604 INCHES MINIMUM AND 0.620 INCHES MAXIMUM
MATERIAL THICKNESS 0.062 INCHES NOMINAL
RECESS ANGLE 90.0 DEGREES NOMINAL
III MINIMUM TENSILE STRENGTH 140000 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 5310-01-237-9392

Category Code Description
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.
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.
Category Code Description
No Freight Information