The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-028-9191, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-028-9191 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN |
| Fastener Length | 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Thread Length | 0.219 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Locking Feature | STRIP OR PATCH OR PELLET THREADS |
| Color | OLIVE DRAB OVERALL |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.256 INCHES MINIMUM AND 0.270 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 |
| Reference | Meaning |
|---|---|
| SM-B-415187-1 | 5/2 Secondary reference U.S. Government activity |
| SM-B-542040 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-028-9191 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-028-9191: Head Height: 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN; Fastener Length: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Thread Length: 0.219 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.138 INCHES IN. 15 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.