The Bolt,shoulder, cataloged under National Stock Number 5306-01-045-9504, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-045-9504 |
| Primary Part Number | MB89-3-20 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 1.565 INCHES MINIMUM AND 1.612 INCHES MAXIMUM IN |
| Shoulder Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-507 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| BM17019-3-20Y | Huck International, Inc (USA) |
| ST3M507-3-20 | J M Precision Inc (USA) |
| ST3M507-3-20 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| WC507-3-20 | West Coast Aerospace, Inc. (USA) |
| HP5507-3-20 | Heartland Precision Fasteners Inc (USA) |
| MB89-3-20 PRIMARY | Hi-Shear Corporation (USA) |
| MB89-3-20 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M507-3-20 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF1366-3-20 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 11921-3-20 | Reid Products Inc. Dba Reid Products Inc (USA) |
| VS3038-3-20 | Howmet Global Fastening Systems Inc (USA) |
| S11-1062-3-20 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M507-3-20 PRIMARY | The Boeing Company Div Defense (USA) |
| 109451-3-20 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VAL23608-3-20 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M507-3-20 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M507-3-20 | Houston Precision Fasteners I Lp (USA) |
| Reference | Meaning |
|---|---|
| 109453-3-20Y | 5/9 Secondary reference U.S. Government activity |
| VS3038-3-20 | 5/9 Secondary reference U.S. Government activity |
| 109451-3-20 | 5/2 Secondary reference U.S. Government activity |
| MA5507-3-20 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| BM17019-3-20Y | 5/9 Secondary reference U.S. Government activity |
| 109453-3-20Y | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5306-01-045-9504 is a Bolt,shoulder, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-045-9504 has 17 manufacturer part numbers on file: BM17019-3-20Y (Huck International, Inc), ST3M507-3-20 (J M Precision Inc), ST3M507-3-20 (Fastener Innovation Technology, Inc. Dba F I T), WC507-3-20 (West Coast Aerospace, Inc.), HP5507-3-20 (Heartland Precision Fasteners Inc) and 12 more.
Key specifications for MB89-3-20: Head Height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Fastener Length: 1.565 INCHES MINIMUM AND 1.612 INCHES MAXIMUM IN; Shoulder Length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN. 15 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.