The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-079-5035, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-079-5035 |
| Primary Part Number | 300R691H01 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Head Height | 0.120 INCHES NOMINAL IN |
| Fastener Length | 0.560 INCHES NOMINAL IN |
| Thread Length | 0.250 INCHES MINIMUM IN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.125 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.310 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.309 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 |
|---|---|
| 300R691H01 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 300R691H01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-079-5035 is a Screw,externally Relieved Body, manufactured by Westinghouse Electric Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-079-5035 has 1 manufacturer part number on file: 300R691H01 (Westinghouse Electric Corp).
Key specifications for 300R691H01: Head Height: 0.120 INCHES NOMINAL IN; Fastener Length: 0.560 INCHES NOMINAL IN; Thread Length: 0.250 INCHES MINIMUM IN; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.