The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-424-0377, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Long-Lok Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-424-0377 |
| Primary Part Number | T-1427 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Long-Lok Llc |
| Status | ACTIVE |
| Head Height | 0.121 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Fastener Length | 0.438 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT FILLISTER |
| Locking Feature | PATCH THREADS |
| Internal Drive Style | HEXAGON |
| Thread Quantity Per Inch | 28 |
| Head Diameter | 0.369 INCHES MINIMUM AND 0.375 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 |
|---|---|
| T-1427 PRIMARY | Long-Lok Llc (USA) |
| Reference | Meaning |
|---|---|
| 5305PL2175860 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5305-01-424-0377 is a Screw,cap,socket Head, manufactured by Long-Lok Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-424-0377 has 1 manufacturer part number on file: T-1427 (Long-Lok Llc).
Key specifications for T-1427: Head Height: 0.121 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Fastener Length: 0.438 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN; Head Style: FLAT FILLISTER. 8 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.