The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-121-6583, 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 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-121-6583 |
| Primary Part Number | 148935 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lockheed Martin Corp Electronics and Missiles Div |
| Status | ACTIVE |
| Fastener Length | 0.516 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| First Diameter From Head | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.189 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.257 INCHES MINIMUM AND 0.279 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 |
|---|---|
| 148935 PRIMARY | Lockheed Martin Corp Electronics and Missiles Div (USA) |
NSN 5305-01-121-6583 is a Screw,externally Relieved Body, manufactured by Lockheed Martin Corp Electronics and Missiles Div, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-121-6583 has 1 manufacturer part number on file: 148935 (Lockheed Martin Corp Electronics and Missiles Div).
Key specifications for 148935: Fastener Length: 0.516 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN; First Diameter From Head: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN. 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.