The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-145-8377, 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17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-145-8377 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.062 INCHES NOMINAL IN |
| Fastener Length | 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-Z-325 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.337 INCHES MINIMUM AND 0.417 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 4 TYPE |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.218 INCHES MINIMUM AND 0.255 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 |
|---|---|
| 3176209-A-003 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| FF-S-86 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-145-8377 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-145-8377: Width Across Flats: 0.062 INCHES NOMINAL IN; Fastener Length: 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-Z-325 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.337 INCHES MINIMUM AND 0.417 INCHES MAXIMUM 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.