The Screw,close Tolerance, cataloged under National Stock Number 5305-01-480-2083, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-480-2083 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 4.628 INCHES MINIMUM AND 4.658 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPEII,CLASS2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.768 INCHES NOMINAL IN |
| Material Document and Classification | AMS5731 ASSN STD 1ST MATERIAL RESPONSE OR AMS5732 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.5000 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 3.865 INCHES MINIMUM AND 3.885 INCHES MAXIMUM IN |
| Grip Diameter | 0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORQUE |
| Countersink Angle | 0.99 DEGREES MINIMUM AND 1.00 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.6901 INCHES MINIMUM AND 0.7611 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 |
|---|---|
| NAS1581C8H62 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-480-2083 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-480-2083: Fastener Length: 4.628 INCHES MINIMUM AND 4.658 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPEII,CLASS2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.768 INCHES NOMINAL IN; Material Document and Classification: AMS5731 ASSN STD 1ST MATERIAL RESPONSE OR AMS5732 ASSN STD 2ND MATERIAL RESPONSE OVERALL. 18 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.