The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-413-5481, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-413-5481 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Spline Minor Diameter | 0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN |
| Fastener Length | 2.000 INCHES NOMINAL IN |
| Spline Width | 0.058 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Thread Length | 1.875 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| Spline Major Diameter | 0.254 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH THREADS |
| Internal Drive Style | SIX SPLINE |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL UNS K03104 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.720 INCHES MINIMUM AND 0.781 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 |
|---|---|
| H623DB001 ITEM 16 | 5/2 Secondary reference U.S. Government activity |
| A640038C200 | 3/2 Design control — primary reference U.S. Government activity |
| 5305PL0780100 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5305-01-413-5481 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-413-5481: Spline Minor Diameter: 0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN; Fastener Length: 2.000 INCHES NOMINAL IN; Spline Width: 0.058 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Thread Length: 1.875 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.
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.