The Screw,machine, cataloged under National Stock Number 5305-01-145-8530, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Barnes Group Inc. Dba Barnes Distribution. 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-145-8530 |
| Primary Part Number | 31123 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Barnes Group Inc. Dba Barnes Distribution |
| Status | ACTIVE |
| Head Height | 0.103 INCHES NOMINAL IN |
| Screw Surface Treatment | NICKEL |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.260 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 |
|---|---|
| 31123 PRIMARY | Barnes Group Inc. Dba Barnes Distribution (USA) |
NSN 5305-01-145-8530 is a Screw,machine, manufactured by Barnes Group Inc. Dba Barnes Distribution, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-145-8530 has 1 manufacturer part number on file: 31123 (Barnes Group Inc. Dba Barnes Distribution).
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-290-9125, 6515-01-419-1426, 5305-01-589-3978. Verify interchangeability with system specifications before substitution.
Key specifications for 31123: Head Height: 0.103 INCHES NOMINAL IN; Screw Surface Treatment: NICKEL; Fastener Length: 0.375 INCHES NOMINAL IN; Thread Length: 0.375 INCHES NOMINAL 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.