The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-276-3334, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Solutions America Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-276-3334 |
| Primary Part Number | 179864 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | ACTIVE |
| Head Height | 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Fastener Length | 1.690 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| Thread Length | 1.125 INCHES NOMINAL IN |
| Material Document and Classification | G-280 CAGEC 72582 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 179864 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
NSN 5305-01-276-3334 is a Screw,cap,hexagon Head, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-276-3334 has 1 manufacturer part number on file: 179864 (Rolls-Royce Solutions America Inc).
Key specifications for 179864: Head Height: 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Fastener Length: 1.690 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN; Thread Length: 1.125 INCHES NOMINAL IN; Material Document and Classification: G-280 CAGEC 72582 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 12 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.