The Screw,machine, cataloged under National Stock Number 5305-00-550-9331, 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14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-550-9331 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| Fastener Length | 0.187 INCHES NOMINAL IN |
| Screw Material Document and Classification | QQ-B-626,COMP 1 FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-321,COMP 4 FED SPEC 2ND MATERIAL RESPONSE OR QQ-B-613 FED SPEC 3RD MATERIAL RESPONSE |
| Thread Length | 0.187 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 1 TYPE AND 9S STYLE |
| Screw Material | COPPER ALLOY 268 OR COPPER ALLOY 240 OR COPPER ALLOY |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.205 INCHES MINIMUM AND 0.219 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 |
|---|---|
| MS35229-12 | 2/2 Government specification standardization U.S. Government activity |
NSN 5305-00-550-9331 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-00-550-9331: Head Height: 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN; Fastener Length: 0.187 INCHES NOMINAL IN; Screw Material Document and Classification: QQ-B-626,COMP 1 FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-321,COMP 4 FED SPEC 2ND MATERIAL RESPONSE OR QQ-B-613 FED SPEC 3RD MATERIAL RESPONSE; Thread Length: 0.187 INCHES NOMINAL 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.