The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-155-6682, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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 | 5305-01-155-6682 |
| Primary Part Number | 709-4684917 ITEM 42 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 3.380 INCHES NOMINAL IN |
| Thread Length | 0.963 INCHES MINIMUM IN |
| First Diameter From Head | 0.371 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 2.417 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.230 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 2.250 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.562 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 |
|---|---|
| 709-4684917 ITEM 42 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5305-01-155-6682 is a Screw,externally Relieved Body, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-155-6682 has 1 manufacturer part number on file: 709-4684917 ITEM 42 (Naval Sea Systems Command).
Key specifications for 709-4684917 ITEM 42: Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 3.380 INCHES NOMINAL IN; Thread Length: 0.963 INCHES MINIMUM IN; First Diameter From Head: 0.371 INCHES MINIMUM AND 0.373 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.