The Screw,machine, cataloged under National Stock Number 5305-01-239-0635, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-239-0635 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.107 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Fastener Length | 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Screw Material Document and Classification | QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.168 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 1S STYLE AND 1 TYPE |
| Screw Material | NICKEL ALLOY 400 |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 8-32UNC-2AX0.250LG NICU | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| QQN281CLA FFS392 TY1 STY1S | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| FF-S-92 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-239-0635 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-239-0635: Head Height: 0.107 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Fastener Length: 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Screw Material Document and Classification: QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE; Thread Length: 0.168 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN. 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.