The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-356-8976, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-356-8976 |
| Primary Part Number | 53A-00-199-8 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| Head Height | 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Fastener Length | 1.469 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Thread Length | 0.874 INCHES MINIMUM AND 1.064 INCHES MAXIMUM IN |
| Material Document and Classification | QQN281,CLA FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | STRIP THREADS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL ALLOY 400 OVERALL |
| Material | PLASTIC POLYAMIDE NYLON THREADS |
| Thread Series Designator | UNF |
| Head Diameter | 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 53A-00-199-8 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 53A-00-199-8 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
NSN 5305-01-356-8976 is a Screw,cap,socket Head, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-356-8976 has 1 manufacturer part number on file: 53A-00-199-8 (Naval Sea Systems Command).
Key specifications for 53A-00-199-8: Width Across Flats: 0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN; Head Height: 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN; Fastener Length: 1.469 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Thread Length: 0.874 INCHES MINIMUM AND 1.064 INCHES MAXIMUM IN. 16 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.