The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-045-6600, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corp Electronics and Missiles Div. Government technical data includes 16 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 | 5305-01-045-6600 |
| Primary Part Number | 126736 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lockheed Martin Corp Electronics and Missiles Div |
| Status | ACTIVE |
| Width Across Flats | 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN |
| Fastener Length | 0.542 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.360 INCHES MINIMUM AND 0.462 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4037 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.359 INCHES MINIMUM AND 0.411 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 |
|---|---|
| 126736 PRIMARY | Lockheed Martin Corp Electronics and Missiles Div (USA) |
NSN 5305-01-045-6600 is a Screw,cap,socket Head, manufactured by Lockheed Martin Corp Electronics and Missiles Div, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-045-6600 has 1 manufacturer part number on file: 126736 (Lockheed Martin Corp Electronics and Missiles Div).
Key specifications for 126736: Width Across Flats: 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN; Fastener Length: 0.542 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.360 INCHES MINIMUM AND 0.462 INCHES MAXIMUM IN. 16 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.