The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-374-3278, 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 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-374-3278 |
| Primary Part Number | 704-5768570 ITEM 58 TYPE VI |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Spline Minor Diameter | 0.212 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Spline Width | 0.064 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN |
| Thread Length | 0.905 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN |
| Hardness Rating | 42.0 ROCKWELL C NOMINAL FASTENER |
| Spline Major Diameter | 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 5 TYPE |
| Locking Feature | PATCH OR PELLET OR STRIP 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 | 18 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | STEEL 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 |
| Part Number | Manufacturer |
|---|---|
| 704-5768570 ITEM 58 TYPE VI PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| FF-S-86 | 4/1 Identification reference U.S. Government activity |
| 5768570 ITEM 58 | 5/9 Secondary reference Naval Sea Systems Command |
| 60-16-9622 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-374-3278 is a Screw,cap,socket Head, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-374-3278 has 1 manufacturer part number on file: 704-5768570 ITEM 58 TYPE VI (Naval Sea Systems Command).
Key specifications for 704-5768570 ITEM 58 TYPE VI: Spline Minor Diameter: 0.212 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN; Fastener Length: 1.250 INCHES NOMINAL IN; Spline Width: 0.064 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN; Thread Length: 0.905 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN. 19 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.