The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-129-3330, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Martin-Baker Aircraft Company Limited. Government technical data includes 11 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 | 5305-01-129-3330 |
| Primary Part Number | MBEU-65385 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Martin-Baker Aircraft Company Limited |
| Status | ACTIVE |
| Head Height | 0.095 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Fastener Length | 0.312 INCHES NOMINAL IN |
| Thread Pitch in Millimeters | 0.7 |
| Thread Length | 0.312 INCHES NOMINAL IN |
| Nominal Thread Diameter | 4.0 MILLIMETERS MM |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH THREADS |
| Internal Drive Style | SLOT |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | M |
| Head Diameter | 0.185 INCHES MINIMUM AND 0.186 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 |
|---|---|
| MBEU-65385 PRIMARY | Martin-Baker Aircraft Company Limited (GBR) |
NSN 5305-01-129-3330 is a Screw,cap,socket Head, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-129-3330 has 1 manufacturer part number on file: MBEU-65385 (Martin-Baker Aircraft Company Limited).
Key specifications for MBEU-65385: Head Height: 0.095 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN; Fastener Length: 0.312 INCHES NOMINAL IN; Thread Pitch in Millimeters: 0.7; Thread Length: 0.312 INCHES NOMINAL IN. 11 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.