Product Details | RECESSED WASHER

5310-01-320-5920 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: MM118C5A, AS19879C5A, VN948BF5C, 03A257C5A, 5310-01-320-5920, 01-320-5920, 5310013205920, 013205920

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 27 MAY 1990 01-320-5920

Drawings & Photos | NSN 5310-01-320-5920


Demand History | NSN 5310-01-320-5920

Part Number Request Date QTY Origin
03A257C5A 2023-04-92 45 DIBBS
AS19879C5A 2023-04-92 45 DIBBS
NS202860C5A 2023-04-92 45 DIBBS
VN948BF5C 2023-04-92 45 DIBBS
03A257C5A 2022-06-179 44 DIBBS
AS19879C5A 2022-06-179 44 DIBBS
NS202860C5A 2022-06-179 44 DIBBS
VN948BF5C 2022-06-179 44 DIBBS
5310-01-320-5920 2020-02-37 33 DIBBS
5310-01-320-5920 2020-01-29 33 DIBBS
5310-01-320-5920 2018-11-308 34 DIBBS
5310-01-320-5920 2018-05-150 22 DIBBS
5310-01-320-5920 2018-05-128 15 DIBBS
5310-01-320-5920 2018-04-113 8 DIBBS

Cross Reference | NSN 5310-01-320-5920

Part Number Cage Code Manufacturer
03A257C5A 76823 NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN AEROSPACE
AS19879C5A 10630 ANILLO INDUSTRIES, INC. DBA ANILLO INDUSTRIES
MM118C5A 58009 MOELLER MANUFACTURING & SUPPLY INC.
VN948BF5C 92215 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS

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Technical Data | NSN 5310-01-320-5920

Characteristic Specifications
MATERIAL IRON ALLOY 660 OR NICKEL ALLOY 718 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS 5525 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5737 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5596 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5597 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5662 ASSN STD 2ND MATERIAL RESPONSE OVERALL
SURFACE TREATMENT ALUMINUM ALLOY OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION AMS 4006 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATOR 15 RECESS
HOLE DIAMETER 0.314 INCHES MINIMUM AND 0.318 INCHES MAXIMUM
OUTSIDE DIAMETER 0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM
RECESS DIAMETER 0.386 INCHES MINIMUM AND 0.396 INCHES MAXIMUM
MATERIAL THICKNESS 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM
RECESS ANGLE 90.0 DEGREES NOMINAL
TEST DATA DOCUMENT 96906-MIL-STD-6866 STANDARD
III MINIMUM TENSILE STRENGTH 180000 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 5310-01-320-5920

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.
Category Code Description
NMF Description 093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 576 unknown
Originating Activity Code KH Defense Industrial Supply Center
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 5310-01-320-5920

Category Code Description
Budget Code9 General Support DIV57X4921.070:Air Force decentrally managed expense items (ERRC XB3, XF-3) with a unit cost of less than $250,000 that are requisitioned/procured at base (retail) level from DLA, GSA, Army, Navy, Depot Maintenance Service, Air Force Industrial Fund (AFMC), local manufacture and commercial vendors.
Price ValidationN The current standard price in Catalog Management Data (CMD) has not analyzed or coded for LP/LM.
  • The price has not been analyzed or reviewed for accuracy.
  • ZOP or Standard price challenges are permissible, but must be supported with adequate justification. However, if coded for Local Purchase (LP) or Fabrication/Manufacture as indicated with an (LM) Acquisition Advice Code of ?L? or?F?,the case must be evaluated locally where purchased or fabricated.
Fund CodeSFStock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Materiel Management Aggregation CodeSXSX:AF SICA RESIDUAL MMAC-OC-ALC
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDFDepartment of the Air Force
Service OrganizationFU.S. Air Force
ReparabilityNStock Fund (except Munitions)
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