The Screw,machine, cataloged under National Stock Number 5305-01-020-9499, 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 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-020-9499 |
| Primary Part Number | 446-4-105 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.970 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.696 INCHES MINIMUM AND 0.835 INCHES MAXIMUM IN |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Thread Surface Finish | 63.0 MICROINCHES |
| Screw Material | STEEL COMP 410 |
| Internal Drive Style | SLOT |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.581 INCHES MINIMUM AND 0.635 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 |
| Part Number | Manufacturer |
|---|---|
| 446-4-105 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 5305-01-020-9499 is a Screw,machine, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-020-9499 has 1 manufacturer part number on file: 446-4-105 (Triumph Engine Control Systems Llc).
Key specifications for 446-4-105: Screw Surface Treatment: PASSIVATE; Fastener Length: 0.970 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE; Thread Length: 0.696 INCHES MINIMUM AND 0.835 INCHES MAXIMUM IN. 16 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.