The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-021-6031, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Army Weapons Command Attn Amswe-Ree-S. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-021-6031 |
| Primary Part Number | 216031 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Army Weapons Command Attn Amswe-Ree-S |
| Status | ACTIVE |
| Head Height | 0.375 INCHES NOMINAL IN |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Thread Length | 1.250 INCHES MAXIMUM IN |
| Material Document and Classification | SAE,GR 1 AND 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Document | AS MODIFIED BY HEAD DIM |
| Width Between Flats | 0.750 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 2 TYPE AND 10P STYLE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 216031 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| Reference | Meaning |
|---|---|
| FFS85TYPE2STYLE10P | 4/1 Identification reference U.S. Government activity |
| 5305000216031 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 5305-021-6031 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5305-00-021-6031 is a Screw,cap,hexagon Head, manufactured by Army Weapons Command Attn Amswe-Ree-S, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-021-6031 has 1 manufacturer part number on file: 216031 (Army Weapons Command Attn Amswe-Ree-S).
2 possible matches (shared part number, not a government interchangeability claim): 4730-00-201-9588, 6150-01-668-0058. Verify interchangeability with system specifications before substitution.
Key specifications for 216031: Head Height: 0.375 INCHES NOMINAL IN; Fastener Length: 1.250 INCHES NOMINAL IN; Thread Length: 1.250 INCHES MAXIMUM IN; Material Document and Classification: SAE,GR 1 AND 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 14 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.
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.