The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-324-7716, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 12 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-324-7716 |
| Primary Part Number | BM3326-12-82 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.168 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Head Height | 0.701 INCHES MINIMUM AND 0.721 INCHES MAXIMUM IN |
| Fastener Length | 6.162 INCHES MINIMUM AND 6.192 INCHES MAXIMUM IN |
| Extended Washer Diameter | 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN |
| Thread Length | 1.027 INCHES MINIMUM AND 1.077 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 5.115 INCHES MINIMUM AND 5.135 INCHES MAXIMUM IN |
| Width Between Flats | 0.803 INCHES MINIMUM AND 0.814 INCHES MAXIMUM IN |
| Grip Diameter | 0.7485 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| BM3326-12-82 | Huck International, Inc (USA) |
| MB84-12-82 | Hi-Shear Corporation (USA) |
| ST3M571-12-82 | Heartland Precision Fasteners Inc (USA) |
| ST3M571-12-82 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| PBF23T12P82 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M571-12-82 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| VAL23033-12-82 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| VS3060-12-82 | Howmet Global Fastening Systems Inc (USA) |
| AIC752-12-82 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| S11-1059-12-82 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| 74328-12-82 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| S371-12-82 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 74328-12-82 | 5/9 Secondary reference Sps Technologies Inc |
| 74328-12-82 | 5/9 Secondary reference Sps Technologies Inc |
| BM3326-12-82 | 5/9 Secondary reference U.S. Government activity |
| VS3060-12-82 | 5/9 Secondary reference U.S. Government activity |
| MB84-12-82 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| ST3M571-12-82 | 3/9 Design control — primary reference The Boeing Company Div Defense |
| S371-12-82 | 5/9 Secondary reference U.S. Government activity |
| GS1030-12-82 | 5/9 Secondary reference B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace |
NSN 5306-00-324-7716 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-324-7716 has 12 manufacturer part numbers on file: BM3326-12-82 (Huck International, Inc), MB84-12-82 (Hi-Shear Corporation), ST3M571-12-82 (Heartland Precision Fasteners Inc), ST3M571-12-82 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), PBF23T12P82 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 7 more.
Key specifications for BM3326-12-82: Extended Washer Thickness: 0.168 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN; Head Height: 0.701 INCHES MINIMUM AND 0.721 INCHES MAXIMUM IN; Fastener Length: 6.162 INCHES MINIMUM AND 6.192 INCHES MAXIMUM IN; Extended Washer Diameter: 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN. 16 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.