The Bolt,machine, cataloged under National Stock Number 5306-01-421-3191, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok. 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (CAGE 16258); Sps Technologies, Llc Dba PB Fasteners (CAGE 56878); Federal Manufacturing Corp (CAGE 17943); Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (CAGE 57928); Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (CAGE 27624) |
| Parameter | Value |
|---|---|
| NSN | 5306-01-421-3191 |
| Primary Part Number | 66-4002-503 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 66-4002-503 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| 66-4002-503 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 66-4002-503 | Federal Manufacturing Corp (USA) |
| 66-4002-503 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| 66-4002-503 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 66-4002-503 | 5/9 Secondary reference J M Precision Inc |
| 66-4002-503 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| 66-4002-4 | 5/9 Secondary reference U.S. Government activity |
| 66-4002-503 | 5/9 Secondary reference Mecair Aerospace Industries,subsidiary of Spstechnologiesdiv Division of Sps Technologiesdba Mecair Inc. Div Division of Sps Technologies |
| 66-4002-503 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 66-4002-503 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| 66-4002-503 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-421-3191 is a Bolt,machine, manufactured by Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-421-3191 has 5 manufacturer part numbers on file: 66-4002-503 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), 66-4002-503 (Sps Technologies, Llc Dba PB Fasteners), 66-4002-503 (Federal Manufacturing Corp), 66-4002-503 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), 66-4002-503 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
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.