The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-331-8589, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 13 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 | 5305-01-331-8589 |
| Primary Part Number | 657531-11 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Thread Length | 0.940 INCHES NOMINAL IN |
| First Diameter From Head | 0.094 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN NO. 2 |
| 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 |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| 657531-11 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 5305-01-331-8589 is a Screw,externally Relieved Body, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-331-8589 has 1 manufacturer part number on file: 657531-11 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 657531-11: Fastener Length: 1.250 INCHES NOMINAL IN; Thread Length: 0.940 INCHES NOMINAL IN; First Diameter From Head: 0.094 INCHES NOMINAL IN; Nominal Thread Diameter: 0.138 INCHES IN. 13 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.