The Bolt,machine, cataloged under National Stock Number 5306-01-296-6420, 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. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-296-6420 |
| Primary Part Number | SLB351-12A82 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
| Status | ACTIVE |
| Extended Washer Thickness | 0.178 INCHES NOMINAL IN |
| Head Height | 0.711 INCHES NOMINAL IN |
| Fastener Length | 6.439 INCHES NOMINAL IN |
| Extended Washer Diameter | 1.225 INCHES MINIMUM IN |
| Thread Length | 1.314 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | AMS5758 NATIONAL SPEC ALL MATERIAL RESPONSES OR AMS5844 NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 5.125 INCHES NOMINAL IN |
| Width Between Flats | 0.917 INCHES MINIMUM IN |
| Grip Diameter | 0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 6.439 INCHES NOMINAL FIRST HOLE IN |
| Hole Type | DRILLED |
| Hole Diameter | 0.141 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 |
|---|---|
| SLB351-12A82 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| PBF1446-12A82 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 76924-12A82 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC6924-12A82 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| HS4243-12A82 | 3/9 Design control — primary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5306-01-296-6420 is a Bolt,machine, manufactured by Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-296-6420 has 4 manufacturer part numbers on file: SLB351-12A82 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), PBF1446-12A82 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 76924-12A82 (Sps Technologies, Llc Dba PB Fasteners), AIC6924-12A82 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for SLB351-12A82: Extended Washer Thickness: 0.178 INCHES NOMINAL IN; Head Height: 0.711 INCHES NOMINAL IN; Fastener Length: 6.439 INCHES NOMINAL IN; Extended Washer Diameter: 1.225 INCHES MINIMUM IN. 21 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.