The Screw,machine, cataloged under National Stock Number 5305-00-944-4273, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 17 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-944-4273 |
| Primary Part Number | 83501 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Head Height | 0.150 INCHES NOMINAL IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 1.010 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.660 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Hardness Rating | 42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Criticality Code Justification | FEAT |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Chamfer Angle | 45.0 DEGREES NOMINAL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Head Diameter | 0.370 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 83501 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 5305-00-944-4273 is a Screw,machine, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-944-4273 has 1 manufacturer part number on file: 83501 (Triumph Engine Control Systems Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5930-01-024-6600, 4940-01-140-6803, 5930-01-571-1978. Verify interchangeability with system specifications before substitution.
Key specifications for 83501: Head Height: 0.150 INCHES NOMINAL IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 1.010 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE. 17 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.