The Bolt,shoulder, cataloged under National Stock Number 5306-01-045-6570, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 13 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-045-6570 |
| Primary Part Number | ST3M507-5-6 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Fastener Length | 0.826 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN |
| Shoulder Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-507 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| MB89-5-6 | Hi-Shear Corporation (USA) |
| MB89-5-6 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M507-5-6 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M507-5-6 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| PBF1366-5-6 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 11921-5-6 | Reid Products Inc. Dba Reid Products Inc (USA) |
| S11-1062-5-6 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M507-5-6 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M507-5-6 | Houston Precision Fasteners I Lp (USA) |
| WC507-5-6 | West Coast Aerospace, Inc. (USA) |
| HP5507-5-6 | Heartland Precision Fasteners Inc (USA) |
| VAL23608-5-6 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M507-5-6 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| BM17019-5-6Y | 5/9 Secondary reference U.S. Government activity |
| VS3038-5-6 | 5/2 Secondary reference U.S. Government activity |
| 109451-5-6 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 109453-5-6Y | 5/9 Secondary reference U.S. Government activity |
| 109453-5-6Y | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 109451-5-6 | 5/2 Secondary reference U.S. Government activity |
| MA5507-5-6 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| ST3M507 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 5306-01-045-6570 is a Bolt,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-045-6570 has 13 manufacturer part numbers on file: MB89-5-6 (Hi-Shear Corporation), MB89-5-6 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M507-5-6 (The Boeing Company Div Defense), ST3M507-5-6 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), PBF1366-5-6 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 8 more.
Key specifications for ST3M507-5-6: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Fastener Length: 0.826 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN; Shoulder Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.3427 INCHES MINIMUM AND 0.3432 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.