The Screw,close Tolerance, cataloged under National Stock Number 5305-01-661-4835, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-661-4835 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.1250 INCHES MINIMUM AND 0.1400 INCHES MAXIMUM IN |
| Fastener Length | 0.7660 INCHES MINIMUM AND 0.7810 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS-QQ-P-416 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.8590 INCHES MINIMUM AND 0.9060 INCHES MAXIMUM IN |
| Material Document and Classification | AMS6382 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS6415 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS6484 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS6322 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.3670 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| NAS1801-4D14 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-661-4835 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-661-4835: Head Height: 0.1250 INCHES MINIMUM AND 0.1400 INCHES MAXIMUM IN; Fastener Length: 0.7660 INCHES MINIMUM AND 0.7810 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS-QQ-P-416 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.8590 INCHES MINIMUM AND 0.9060 INCHES MAXIMUM IN. 14 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.