The Bolt,shoulder, cataloged under National Stock Number 5306-01-046-5300, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-046-5300 |
| Primary Part Number | MB87-12-18 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings 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 | 2.162 INCHES MINIMUM AND 2.192 INCHES MAXIMUM IN |
| Shoulder Length | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM FIRST SHOULDER IN |
| Extended Washer Diameter | 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.779 INCHES MINIMUM AND 0.780 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.027 INCHES MINIMUM AND 1.077 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.803 INCHES MINIMUM AND 0.814 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL 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 |
|---|---|
| MB87-12-18 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M607-12-18 | Reid Products Inc. Dba Reid Products Inc (USA) |
| BM3326-12-18Y PRIMARY | Huck International, Inc (USA) |
| VAL23033-12X18 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB87-12-18 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 74328-12-18X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 74328-12-18X | 5/2 Secondary reference U.S. Government activity |
| VS3061-12-18 | 5/2 Secondary reference U.S. Government activity |
| BM3326-12-18Y | 5/9 Secondary reference U.S. Government activity |
| ST3M607-12-18 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5306-01-046-5300 is a Bolt,shoulder, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-046-5300 has 5 manufacturer part numbers on file: MB87-12-18 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M607-12-18 (Reid Products Inc. Dba Reid Products Inc), BM3326-12-18Y (Huck International, Inc), VAL23033-12X18 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MB87-12-18 (Hi-Shear Corporation).
Key specifications for MB87-12-18: 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: 2.162 INCHES MINIMUM AND 2.192 INCHES MAXIMUM IN; Shoulder Length: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM FIRST SHOULDER 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.