The Bolt,shoulder, cataloged under National Stock Number 5306-01-046-1196, 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 18 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-046-1196 |
| Primary Part Number | BM3326-5D37Y |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.072 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN |
| Head Height | 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN |
| Fastener Length | 2.848 INCHES MINIMUM AND 2.878 INCHES MAXIMUM IN |
| Shoulder Length | 2.302 INCHES MINIMUM AND 2.322 INCHES MAXIMUM FIRST SHOULDER IN |
| Extended Washer Diameter | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.526 INCHES MINIMUM AND 0.576 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.640 INCHES MINIMUM AND 2.680 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| BM3326-5D37Y PRIMARY | Huck International, Inc (USA) |
| ST3M607-5D37 | Reid Products Inc. Dba Reid Products Inc (USA) |
| VAL23033-5XD37 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB87-5D37 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MB87-5D37 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 74328-5D37Y | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M607-5D37 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| VS3061-5D37 | 3/2 Design control — primary reference U.S. Government activity |
| 74328-5D37Y | 3/2 Design control — primary reference U.S. Government activity |
| BM3326-5D37Y | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-046-1196 is a Bolt,shoulder, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-046-1196 has 5 manufacturer part numbers on file: BM3326-5D37Y (Huck International, Inc), ST3M607-5D37 (Reid Products Inc. Dba Reid Products Inc), VAL23033-5XD37 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MB87-5D37 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), MB87-5D37 (Hi-Shear Corporation).
Key specifications for BM3326-5D37Y: Extended Washer Thickness: 0.072 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN; Head Height: 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN; Fastener Length: 2.848 INCHES MINIMUM AND 2.878 INCHES MAXIMUM IN; Shoulder Length: 2.302 INCHES MINIMUM AND 2.322 INCHES MAXIMUM FIRST SHOULDER IN. 18 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.