The Screw,machine, cataloged under National Stock Number 5305-00-207-7929, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Triumph Thermal Systems, Llc. Government technical data includes 14 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 | 5305-00-207-7929 |
| Primary Part Number | U3158 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Triumph Thermal Systems, Llc |
| Status | ACTIVE |
| Head Height | 0.250 INCHES NOMINAL IN |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 1.812 INCHES NOMINAL IN |
| Screw Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.625 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Minimum Tensile Strength | 75000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNF |
| Head Diameter | 0.401 INCHES MINIMUM AND 0.411 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 |
|---|---|
| U3158 PRIMARY | Triumph Thermal Systems, Llc (USA) |
NSN 5305-00-207-7929 is a Screw,machine, manufactured by Triumph Thermal Systems, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-207-7929 has 1 manufacturer part number on file: U3158 (Triumph Thermal Systems, Llc).
Key specifications for U3158: Head Height: 0.250 INCHES NOMINAL IN; Screw Surface Treatment: CADMIUM; Fastener Length: 1.812 INCHES NOMINAL IN; Screw Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE. 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.