The Screw,tapping, cataloged under National Stock Number 5305-01-145-7083, 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 | 5305-01-145-7083 |
| Primary Part Number | 31859 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Barnes Group Inc. Dba Barnes Distribution |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.164 INCHES IN |
| Extended Washer Thickness | 0.025 INCHES NOMINAL IN |
| Head Height | 0.141 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.406 INCHES NOMINAL IN |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Features Provided | CASEHARDENED |
| Head Style | HEXAGON EXTENDED WASHER |
| Width Between Flats | 0.250 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 | N |
| Part Number | Manufacturer |
|---|---|
| 31859 PRIMARY | Barnes Group Inc. Dba Barnes Distribution (USA) |
NSN 5305-01-145-7083 is a Screw,tapping, manufactured by Barnes Group Inc. Dba Barnes Distribution, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-145-7083 has 1 manufacturer part number on file: 31859 (Barnes Group Inc. Dba Barnes Distribution).
Key specifications for 31859: Nonmachine Nominal Thread Diameter: 0.164 INCHES IN; Extended Washer Thickness: 0.025 INCHES NOMINAL IN; Head Height: 0.141 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.