The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-355-9261, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-355-9261 |
| Primary Part Number | T-1356-4 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Long-Lok Llc |
| Status | ACTIVE |
| Width Across Flats | 0.050 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN |
| Head Height | 0.057 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Fastener Length | 0.124 INCHES MINIMUM AND 0.134 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ+35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.104 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.060 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | STRIP THREADS |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 80 |
| Material | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL |
| Material | PLASTIC POLYCHLOROTRIFLUOROETHYLENE LOCKING FEATURE |
| Thread Series Designator | UNF |
| Head Diameter | 0.091 INCHES MINIMUM AND 0.096 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-1356-4 PRIMARY | Long-Lok Llc (USA) |
| Reference | Meaning |
|---|---|
| 7555972 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-355-9261 is a Screw,cap,socket Head, manufactured by Long-Lok Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-355-9261 has 1 manufacturer part number on file: T-1356-4 (Long-Lok Llc).
Key specifications for T-1356-4: Width Across Flats: 0.050 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN; Head Height: 0.057 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Fastener Length: 0.124 INCHES MINIMUM AND 0.134 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ+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.