The Screw,machine, cataloged under National Stock Number 5305-00-975-1673, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bristol Industries, Llc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-975-1673 |
| Primary Part Number | 546286 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bristol Industries, Llc |
| Status | ACTIVE |
| Head Height | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Screw Surface Treatment | NICKEL |
| Fastener Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Screw Material | STEEL COMP 601 |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 546286 | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| 546286 | 3/9 Design control — primary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 546286 | 5/2 Secondary reference U.S. Government activity |
| 546286 | 5/2 Secondary reference U.S. Government activity |
| 546286 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 546286 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-00-975-1673 is a Screw,machine, manufactured by Bristol Industries, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-975-1673 has 1 manufacturer part number on file: 546286 (Bristol Industries, Llc).
Key specifications for 546286: Head Height: 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Screw Surface Treatment: NICKEL; Fastener Length: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE. 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.