Product Details | RECESSED WASHER

5310-01-320-5921 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: 14000721S22B4, 140-007-21S22B4, 5310-01-320-5921, 01-320-5921, 5310013205921, 013205921

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 27 MAY 1990 01-320-5921

Drawings & Photos | NSN 5310-01-320-5921


Cross Reference | NSN 5310-01-320-5921

Part Number Cage Code Manufacturer
140-007-21S22B4 97499 BELL HELICOPTER TEXTRON INC.

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Technical Data | NSN 5310-01-320-5921

Characteristic Specifications
MATERIAL STEEL COMP 630 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS 5604 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT CADMIUM AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TYPE 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATOR 28 RECESSED BOTH SIDES
HOLE DIAMETER 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM
OUTSIDE DIAMETER 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM
MATERIAL THICKNESS 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
BOTTOM RECESS ANGLE 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
TOP RECESS ANGLE 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
SURFACE FINISH 63.0 MICROINCHES TOP 63.0 MICROINCHES BOTTOM

Restrictions/Controls & Freight Information | NSN 5310-01-320-5921

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 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 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 5310-01-320-5921

Category Code Description
Materiel Category and Inventory ManagerT Industrial Supplies (DLA/GSA Items)
Appropriation and Budget Activity2 Stock Fund Secondary Items
Management Inventory Segment2 NONREPARABLE ITEMS (Exclusive of Insurance and Provisioning Items). This code will be used to identify items which are not reparable.
Specific Group/Generic Code0 Medical Materiel
Weapons Systems/End Item or Homogeneous Group00DLA/GSA-Managed Items that cannot be identified to a specific Army Weapons Systems/End Item
Accounting Requirements CodeX Expendable item. An item of Army property coded with an ARC of ?X? in the AMDF. Expendable items require no formal accountability after issue from a stock record account. Commercial and fabricated items similar to items coded ?X? in the AMDF are considered expendable items.
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDADepartment of the Army
Service OrganizationAU.S. Army
ReparabilityZThis is a nonreparable item. If condemned or economically unserviceable, then dispose at the level authorized replace the item.
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