The Screw,machine, cataloged under National Stock Number 5305-00-208-8975, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-208-8975 |
| Primary Part Number | 6723159 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Head Height | 0.109 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN |
| Fastener Length | 2.139 INCHES MINIMUM AND 2.143 INCHES MAXIMUM IN |
| Thread Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 4340 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNF |
| Head Diameter | 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5305-00-208-8975 is a Screw,machine, manufactured by Rolls-Royce Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-208-8975 has 2 manufacturer part numbers on file: 6723159 (General Motors Corp), 6723159 (Rolls-Royce Corporation).
Key specifications for 6723159: Head Height: 0.109 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN; Fastener Length: 2.139 INCHES MINIMUM AND 2.143 INCHES MAXIMUM IN; Thread Length: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM. 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.