The Screw,tapping, cataloged under National Stock Number 5305-01-145-8026, 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 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. 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 | 5305-01-145-8026 |
| Primary Part Number | 31944 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Barnes Group Inc. Dba Barnes Distribution |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.312 INCHES IN |
| Width Across Flats | 0.500 INCHES NOMINAL IN |
| Head Height | 0.219 INCHES NOMINAL IN |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Features Provided | CASEHARDENED |
| Head Style | HEXAGON |
| Width Between Flats | 0.500 INCHES NOMINAL IN |
| Surface Treatment | CHROMIUM OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 31944 PRIMARY | Barnes Group Inc. Dba Barnes Distribution (USA) |
NSN 5305-01-145-8026 is a Screw,tapping, manufactured by Barnes Group Inc. Dba Barnes Distribution, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-145-8026 has 1 manufacturer part number on file: 31944 (Barnes Group Inc. Dba Barnes Distribution).
3 possible matches (shared part number, not a government interchangeability claim): 3950-01-346-4359, 5331-01-432-5675, 6140-01-603-2828. Verify interchangeability with system specifications before substitution.
Key specifications for 31944: Nonmachine Nominal Thread Diameter: 0.312 INCHES IN; Width Across Flats: 0.500 INCHES NOMINAL IN; Head Height: 0.219 INCHES NOMINAL IN; Fastener Length: 0.750 INCHES NOMINAL IN. 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.