The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-053-8993, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Cummins Inc.. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-053-8993 |
| Primary Part Number | 70221 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Cummins Inc. |
| Status | CANCELLED |
| Head Height | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN |
| Fastener Length | 1.375 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.375 INCHES MAXIMUM IN |
| Hardness Rating | 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 120000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 85000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 70221 PRIMARY | Cummins Inc. (USA) |
| XX002-0927 | Rdm Technology B.v. (NLD) |
| N22P29022C6 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| FFS85 | 4/1 Identification reference U.S. Government activity |
| 1C822 | 5/9 Secondary reference Clark Equipment Co |
| 1C822 | 5/2 Secondary reference U.S. Government activity |
| MS90725-112 | 5/9 Secondary reference U.S. Government activity |
| 5305000538993 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 5305PL0678162 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| N20P29022C11 | 5/9 Secondary reference General Electric Company |
| N22P29022C6 | 5/9 Secondary reference General Electric Company |
| MS90725-112 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-053-8993 is a Screw,cap,hexagon Head, manufactured by Cummins Inc., classified under FSC 5305, Screws. Status: cancelled.
NSN 5305-00-053-8993 has 3 manufacturer part numbers on file: 70221 (Cummins Inc.), XX002-0927 (Rdm Technology B.v.), N22P29022C6 (Lockheed Martin Corporation Div Rms).
3 possible matches (shared part number, not a government interchangeability claim): 5965-00-839-0302, 5306-01-135-9316, 5895-01-694-2330. Verify interchangeability with system specifications before substitution.
Key specifications for 70221: Head Height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN; Fastener Length: 1.375 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 1.375 INCHES MAXIMUM IN. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5305-00-053-8993 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.