The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-121-9349, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Dba Raytheon Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-121-9349 |
| Primary Part Number | 1063858-1 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Thread Length | 0.250 INCHES NOMINAL IN |
| First Diameter From Head | 0.172 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.620 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 1063858-1 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 1063858-1 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 5305-01-121-9349 is a Screw,externally Relieved Body, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-121-9349 has 1 manufacturer part number on file: 1063858-1 (Raytheon Company Dba Raytheon Co).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-462-1648. Verify interchangeability with system specifications before substitution.
Key specifications for 1063858-1: Fastener Length: 1.000 INCHES NOMINAL IN; Thread Length: 0.250 INCHES NOMINAL IN; First Diameter From Head: 0.172 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN. 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.