The Screw,machine, cataloged under National Stock Number 5305-01-177-8291, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-177-8291 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.810 INCHES NOMINAL IN |
| Screw Material Document and Classification | AMS ASSN STD ALL MATERIAL RESPONSES AND ASTM A582 ASSN STD ALL MATERIAL RESPONSES |
| Thread Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM |
| Nominal Thread Diameter | 0.099 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 48 |
| Hole Quantity | 2 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Hole Configuration Style | ROUND |
| Hole Diameter | 0.025 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN |
| Head Diameter | 0.160 INCHES NOMINAL IN |
| Screw Surface Treatment Document and Classification | E+3204 FSCM 94697 MFR REF 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 |
| Reference | Meaning |
|---|---|
| 090-45259 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-177-8291 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-177-8291: Head Height: 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.810 INCHES NOMINAL IN; Screw Material Document and Classification: AMS ASSN STD ALL MATERIAL RESPONSES AND ASTM A582 ASSN STD ALL MATERIAL RESPONSES. 19 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.