The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-361-7929, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Abaco Systems Limited. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-361-7929 |
| Primary Part Number | 421-4-25277-001 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Abaco Systems Limited |
| Status | ACTIVE |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 16.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 0.5 |
| Thread Length | 16.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 3.0 MILLIMETERS MM |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | M |
| 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 |
|---|---|
| 421-4-25277-001 | Abaco Systems Limited (GBR) |
| Reference | Meaning |
|---|---|
| 421-4-25277-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-361-7929 is a Screw,cap,socket Head, manufactured by Abaco Systems Limited, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-361-7929 has 1 manufacturer part number on file: 421-4-25277-001 (Abaco Systems Limited).
Key specifications for 421-4-25277-001: External Thread Tolerance Class: 6G G; Fastener Length: 16.0 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Pitch in Millimeters: 0.5. 12 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.