The Screw,close Tolerance, cataloged under National Stock Number 5305-01-651-8674, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-651-8674 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 0.963 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS-QQ-P-416 TYPE II NATIONAL SPEC 1ST TREATMENT RESPONSE FASTENER |
| Thread Length | 0.338 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.625 INCHES NOMINAL IN |
| Grip Diameter | 0.1890 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM FASTENER |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4140 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.381 INCHES NOMINAL 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 |
|---|---|
| NAS1790-3-10 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1790 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-651-8674 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5306-01-681-8863, 5306-01-681-8866. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-01-651-8674: Fastener Length: 0.963 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS-QQ-P-416 TYPE II NATIONAL SPEC 1ST TREATMENT RESPONSE FASTENER; Thread Length: 0.338 INCHES NOMINAL IN; Nominal Thread Diameter: 0.190 INCHES 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.