The Bolt,machine, cataloged under National Stock Number 5306-01-253-6437, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. The record lists 7 manufacturer part numbers 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Bolt,machine |
| FSC / FSG | 5306 — Bolts (FSG 53) |
| Manufacturers | Hi-Shear Corporation (CAGE 73197); Sps Technologies Ltd, Tj Brooks Division (CAGE K5673); Howmet Global Fastening Systems Inc (CAGE 06950); Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAGE L4528); Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (CAGE 27624) |
| Parameter | Value |
|---|---|
| NSN | 5306-01-253-6437 |
| Primary Part Number | SC2663-3H2 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc |
| 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 |
|---|---|
| MB251-3H2 | Hi-Shear Corporation (USA) |
| ST3M731-3H2 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| SC2663-3H2 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| MB251-3H2 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| SC2663-3-2H | Howmet Global Fastening Systems Inc (USA) |
| PBF1264-3H2 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M731-3H2 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| VS3207-3-2H | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| VS3207-3-2H | 5/9 Secondary reference U.S. Government activity |
| ST3M731-3H2 | 5/9 Secondary reference Sps Technologies Inc |
| 801651-3H2 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-253-6437 is a Bolt,machine, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-253-6437 has 7 manufacturer part numbers on file: MB251-3H2 (Hi-Shear Corporation), ST3M731-3H2 (Sps Technologies Ltd, Tj Brooks Division), SC2663-3H2 (Howmet Global Fastening Systems Inc), MB251-3H2 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), SC2663-3-2H (Howmet Global Fastening Systems Inc) and 2 more.
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.