The Screw,machine, cataloged under National Stock Number 5305-01-028-9181, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-028-9181 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 1.188 INCHES MINIMUM AND 1.235 INCHES MAXIMUM IN |
| Thread Length | 0.860 INCHES MINIMUM AND 0.882 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 |
| Minimum Tensile Strength | 85000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNF |
| Head Diameter | 0.919 INCHES MINIMUM AND 1.017 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC 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 |
|---|---|
| MS24694C282S | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| MS24694C282 | 3/2 Design control — primary reference U.S. Government activity |
| MS24694C282 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-028-9181 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-028-9181: Screw Surface Treatment: PASSIVATE; Fastener Length: 1.188 INCHES MINIMUM AND 1.235 INCHES MAXIMUM IN; Thread Length: 0.860 INCHES MINIMUM AND 0.882 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.500 INCHES IN. 15 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.