The Bolt,machine, cataloged under National Stock Number 5306-00-272-1787, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Hatch & Kirk, Inc.. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-272-1787 |
| Primary Part Number | 3249260 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Distance From Centerline to Flat | 0.186 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Thread Length | 0.375 INCHES MINIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | DEE |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 3135 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.562 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 |
|---|---|
| 3249260 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3238813 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
| 3238813 | 5/9 Secondary reference Hatch & Kirk, Inc. |
| 3249260 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
NSN 5306-00-272-1787 is a Bolt,machine, manufactured by Hatch & Kirk, Inc., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-272-1787 has 1 manufacturer part number on file: 3249260 (Hatch & Kirk, Inc.).
Key specifications for 3249260: Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 1.000 INCHES NOMINAL IN; Distance From Centerline to Flat: 0.186 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Thread Length: 0.375 INCHES MINIMUM IN. 15 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.