The Screw,tapping, cataloged under National Stock Number 5305-01-147-8137, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hatch & Kirk, Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-147-8137 |
| Primary Part Number | 181427 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.500 INCHES IN |
| Head Height | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Nonmachine Thread Style | DOUBLE FLUTE (TYPE F) |
| Head Style | HEXAGON |
| Width Between Flats | 0.638 INCHES NOMINAL IN |
| 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 |
|---|---|
| 181427 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 181427 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
| 181427 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5305-01-147-8137 is a Screw,tapping, manufactured by Hatch & Kirk, Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-147-8137 has 1 manufacturer part number on file: 181427 (Hatch & Kirk, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5306-01-649-5641. Verify interchangeability with system specifications before substitution.
Key specifications for 181427: Nonmachine Nominal Thread Diameter: 0.500 INCHES IN; Head Height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN; Fastener Length: 1.000 INCHES NOMINAL IN; Nonmachine Thread Style: DOUBLE FLUTE (TYPE F). 8 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.