The Screw,tapping, cataloged under National Stock Number 5305-01-145-7079, 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 12 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 | 5305-01-145-7079 |
| Primary Part Number | 31866 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Barnes Group Inc. Dba Barnes Distribution |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.216 INCHES IN |
| Extended Washer Thickness | 0.035 INCHES NOMINAL IN |
| Head Height | 0.149 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.438 INCHES NOMINAL IN |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Features Provided | CASEHARDENED |
| Head Style | HEXAGON EXTENDED WASHER |
| Width Between Flats | 0.312 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE OVERALL |
| Internal Drive Style | SLOT |
| 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 |
|---|---|
| 31866 PRIMARY | Barnes Group Inc. Dba Barnes Distribution (USA) |
NSN 5305-01-145-7079 is a Screw,tapping, manufactured by Barnes Group Inc. Dba Barnes Distribution, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-145-7079 has 1 manufacturer part number on file: 31866 (Barnes Group Inc. Dba Barnes Distribution).
Key specifications for 31866: Nonmachine Nominal Thread Diameter: 0.216 INCHES IN; Extended Washer Thickness: 0.035 INCHES NOMINAL IN; Head Height: 0.149 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN. 12 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.