The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-278-5073, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-278-5073 |
| Primary Part Number | 77C712413P065 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Width Across Flats | 0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN |
| Head Height | 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Fastener Length | 0.775 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN |
| Thread Length | 0.630 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | NICKEL ALLOY 400 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.312 INCHES NOMINAL 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 |
|---|---|
| 77C712413P065 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| 77C712413P065 | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (USA) |
| 77C712413P065 | Allmetal Screw Products Corp (USA) |
NSN 5305-01-278-5073 is a Screw,cap,socket Head, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-278-5073 has 3 manufacturer part numbers on file: 77C712413P065 (Lockheed Martin Corporation Div Rms), 77C712413P065 (All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners), 77C712413P065 (Allmetal Screw Products Corp).
Key specifications for 77C712413P065: Width Across Flats: 0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN; Head Height: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Fastener Length: 0.775 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN; Thread Length: 0.630 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN. 14 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.