Product Details | ASSEMBLED WASHER SELF-LOCKING NUT

5310-01-221-7021 A nut on which has been assembled a nonremovable washer. An integral feature is incorporated for locking on the threads of a mating member.

Part Alternates: KFN5425S, KFN542-5S, 5310-01-221-7021, 01-221-7021, 5310012217021, 012217021

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 03 DEC 1985 01-221-7021

Drawings & Photos | NSN 5310-01-221-7021


Demand History | NSN 5310-01-221-7021

Part Number Request Date QTY Origin
KFN542-5S 2022-07-192 19 DIBBS
KFN542-5S 2022-03-60 25 DIBBS
KFN542-5S 2021-11-327 19 DIBBS
KFN542-5S 2021-09-258 25 DIBBS

Cross Reference | NSN 5310-01-221-7021

Part Number Cage Code Manufacturer
KFN542-5S 15653 ALCOA GLOBAL FASTENERS, INC.

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Technical Data | NSN 5310-01-221-7021

Characteristic Specifications
THREAD SERIES UNJF
NOMINAL THREAD SIZE 0.312 INCHES
THREAD QUANTITY PER INCH 24
THREAD CLASS 3B
THREAD DIRECTION RIGHT-HAND
MATERIAL STEEL OVERALL
SURFACE TREATMENT CADMIUM OVERALL
HARDNESS RATING NOT RATED
NUT STYLE A303 FLAT
WASHER OUTSIDE DIAMETER 0.560 INCHES NOMINAL
OVERALL HEIGHT 0.340 INCHES NOMINAL
NUT HEIGHT 0.243 INCHES MINIMUM AND 0.253 INCHES MAXIMUM
WIDTH ACROSS FLATS 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM
LOCKING FEATURE FREE-RUNNING ALL METAL DESIGN
TEMP RATING NOT RATED

Restrictions/Controls & Freight Information | NSN 5310-01-221-7021

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 573 unknown
Originating Activity Code 9Z DLIS-K
Battle Creek, MI 49037-3084
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 5310-01-221-7021

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 ValidationE The current standard price is an estimated price.
  • Estimated Price challenges are allowed, but follow procedures in para 60.b. (3) of section L of this manual.
  • This code will be changed to a P code upon notification of a contract price or this code will be changed to an updated code upon determination of a valid price.
Fund CodeSFStock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Materiel Management Aggregation CodeXZTG:FMS UNIQUE/WR-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 CodesPRESTRICTED REQUISITION - SECURITY ASSISTANCE PROGRAM (SAP) 1. Indicates item is stocked or acquired only for SAP (replaces Military Assistance Program (MAP)) requirements, or 2. Indicates item is nonstocked and materiel is ordered from the contractor for shipment directly to the foreign government. 3. Base, post, camp, or station will not requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative