The Screw,close Tolerance, cataloged under National Stock Number 5305-01-400-1006, 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18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-400-1006 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 2.204 INCHES MINIMUM AND 2.240 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY II, CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.689 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.4375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS517 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 1.485 INCHES MINIMUM AND 1.515 INCHES MAXIMUM IN |
| Grip Diameter | 0.4325 INCHES MINIMUM AND 0.4365 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | CROSS RECESS TYPE II |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 4340 AND STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.7676 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 |
|---|---|
| NAS517-7-24 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-400-1006 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-400-1006: Fastener Length: 2.204 INCHES MINIMUM AND 2.240 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY II, CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.689 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-S-6049 MIL SPEC SINGLE 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.