The Bolt,machine, cataloged under National Stock Number 5306-01-253-6432, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Bolt,machine |
| FSC / FSG | 5306 — Bolts (FSG 53) |
| Manufacturers | Hi-Shear Corporation (CAGE 73197); Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAGE L4528); Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (CAGE 27624); Sps Technologies Ltd, Tj Brooks Division (CAGE K5673); Howmet Global Fastening Systems Inc (CAGE 06950) |
| Parameter | Value |
|---|---|
| NSN | 5306-01-253-6432 |
| Primary Part Number | MB251-3-1 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| MB251-3-1 | Hi-Shear Corporation (USA) |
| MB251-3-1 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| PBF1264-3-1 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 111364-3-1 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| SC2663-3-1 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M731-3-1 | 5/9 Secondary reference Sps Technologies Inc |
| ST3M731-3-1 | 3/2 Design control — primary reference U.S. Government activity |
| MB251-3-1 | 5/9 Secondary reference Am Multigraphics Div of Am Intl Inc |
| ST3M731-3-1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| VS3207-3-1 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| VS3207-3-1 | 5/9 Secondary reference U.S. Government activity |
| 801651-3-1 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-253-6432 is a Bolt,machine, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-253-6432 has 5 manufacturer part numbers on file: MB251-3-1 (Hi-Shear Corporation), MB251-3-1 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), PBF1264-3-1 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 111364-3-1 (Sps Technologies Ltd, Tj Brooks Division), SC2663-3-1 (Howmet Global Fastening Systems Inc).
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.