The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-657-4701, 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17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-657-4701 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.1030 INCHES MINIMUM AND 0.1180 INCHES MAXIMUM IN |
| Fastener Length | 0.5880 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS-QQ-P-416 TYPE II CLASS 2 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.3380 INCHES NOMINAL IN |
| Spline Major Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.19000 INCHES IN |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | TORQUE-SET RIBBED |
| Thread Class | 3A A |
| Hole Nominal Thread Diameter | 0.19000 INCHES IN |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | THREADED |
| Head Diameter | 0.3060 INCHES MINIMUM AND 0.3130 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 |
|---|---|
| NAS1183E4 | 5/2 Secondary reference U.S. Government activity |
| NAS1183E4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-657-4701 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-657-4701: Head Height: 0.1030 INCHES MINIMUM AND 0.1180 INCHES MAXIMUM IN; Fastener Length: 0.5880 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS-QQ-P-416 TYPE II CLASS 2 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.3380 INCHES NOMINAL 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.