The Bolt,machine, cataloged under National Stock Number 5306-01-131-2787, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sabre Engines Ltd. Government technical data includes 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-131-2787 |
| Primary Part Number | 56440 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sabre Engines Ltd |
| Status | ACTIVE |
| Nominal Thread Diameter | 0.437 INCHES IN |
| Head Style | HEXAGON |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 56440 PRIMARY | Sabre Engines Ltd (GBR) |
| Reference | Meaning |
|---|---|
| MS35308-517 | 5/9 Secondary reference U.S. Government activity |
| 56440 | 5/9 Secondary reference Grove R B Inc |
| 56440 | 5/9 Secondary reference Classic Restoration and Sales |
| MS35308-517 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-131-2787 is a Bolt,machine, manufactured by Sabre Engines Ltd, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-131-2787 has 1 manufacturer part number on file: 56440 (Sabre Engines Ltd).
Key specifications for 56440: Nominal Thread Diameter: 0.437 INCHES IN; Head Style: HEXAGON; Material: STEEL CORROSION RESISTING OVERALL; Thread Series Designator: UNF. 4 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.