The Setscrew, cataloged under National Stock Number 5305-01-278-4013, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Dynex/rivett Corp Power Units and Systems. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-278-4013 |
| Primary Part Number | 90371-518-4 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Dynex/rivett Corp Power Units and Systems |
| Status | ACTIVE |
| Width Across Flats | 0.062 INCHES NOMINAL IN |
| Fastener Length | 0.312 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A 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 |
|---|---|
| 90371-518-4 PRIMARY | Dynex/rivett Corp Power Units and Systems (USA) |
| Reference | Meaning |
|---|---|
| 90371-518-4 | 5/9 Secondary reference Dynex/rivett Inc. |
NSN 5305-01-278-4013 is a Setscrew, manufactured by Dynex/rivett Corp Power Units and Systems, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-278-4013 has 1 manufacturer part number on file: 90371-518-4 (Dynex/rivett Corp Power Units and Systems).
Key specifications for 90371-518-4: Width Across Flats: 0.062 INCHES NOMINAL IN; Fastener Length: 0.312 INCHES NOMINAL IN; Nominal Thread Diameter: 0.138 INCHES IN; Head Style: HEADLESS (SETSCREW). 11 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.