The Screw,machine, cataloged under National Stock Number 5305-01-424-3099, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-424-3099 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Screw Material Document and Classification | STEEL GRADE 5, CAGEC 27235 MFR REF SINGLE MATERIAL RESPONSE |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | SLOT |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| 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 |
| Reference | Meaning |
|---|---|
| 636-160 | 3/9 Design control — primary reference Hardie-Tynes Co., Inc. |
| 122-5277667 ITE | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 60-1066 PIECE NO. 160 | 5/9 Secondary reference Hardie-Tynes Co., Inc. |
NSN 5305-01-424-3099 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-424-3099: Fastener Length: 0.500 INCHES NOMINAL IN; Screw Material Document and Classification: STEEL GRADE 5, CAGEC 27235 MFR REF SINGLE MATERIAL RESPONSE; Nominal Thread Diameter: 0.250 INCHES IN; Head Style: FLAT COUNTERSUNK. 11 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.