The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-134-5085, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Triumph Controls, Llc Dba Triumph Controls, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-134-5085 |
| Primary Part Number | 38270-1 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Triumph Controls, Llc Dba Triumph Controls, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Head Height | 0.247 INCHES NOMINAL IN |
| Fastener Length | 0.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.625 INCHES NOMINAL IN |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 2910 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 302 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.343 INCHES MINIMUM AND 0.347 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 |
|---|---|
| 38270-1 PRIMARY | Triumph Controls, Llc Dba Triumph Controls, Llc (USA) |
| Reference | Meaning |
|---|---|
| 10115364 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3827001-1 | 5/9 Secondary reference Triumph Controls, Llc Dba Triumph Controls, Llc |
NSN 5305-01-134-5085 is a Screw,cap,socket Head, manufactured by Triumph Controls, Llc Dba Triumph Controls, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-134-5085 has 1 manufacturer part number on file: 38270-1 (Triumph Controls, Llc Dba Triumph Controls, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5895-01-578-2881. Verify interchangeability with system specifications before substitution.
Key specifications for 38270-1: Width Across Flats: 0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Head Height: 0.247 INCHES NOMINAL IN; Fastener Length: 0.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.