The Bolt,shoulder, cataloged under National Stock Number 5306-01-045-9538, 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 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-045-9538 |
| Primary Part Number | ST3M507-3-7 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 0.753 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN |
| Shoulder Length | 0.428 INCHES MINIMUM AND 0.448 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 |
|---|---|
| ST3M507-3-7 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M507-3-7 | West Coast Aerospace, Inc. (USA) |
| ST3M507-3-7 | Houston Precision Fasteners I Lp (USA) |
| ST3M507-3-7 | Saturn Fasteners Inc (USA) |
| ST3M507-3-7 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M507-3-7 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M507-3-7 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HP5507-3-7 | Heartland Precision Fasteners Inc (USA) |
| ST3M507-3-7 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 109451-3-7 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VS3038-3-7 | Howmet Global Fastening Systems Inc (USA) |
| S11-1062-3-7 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| VAL23608-3-7 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BM17019-3-7Y | Huck International, Inc (USA) |
| MB89-3-7 | Hi-Shear Corporation (USA) |
| ST3M507-3-7 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| PBF1366-3-7 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 109453-3-7Y | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M507-3-7 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BM17019-3-7Y | 5/9 Secondary reference U.S. Government activity |
| 109451-3-7 | 5/2 Secondary reference U.S. Government activity |
| VS3038-3-7 | 5/9 Secondary reference U.S. Government activity |
| ST3M507-3-7 | 5/9 Secondary reference J M Precision Inc |
| MB89-3-7 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| 109453-3-7Y | 5/9 Secondary reference U.S. Government activity |
| ST3M507-3-7 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| MA5507-3-7 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| ST3M507-3-7 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-045-9538 is a Bolt,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-045-9538 has 17 manufacturer part numbers on file: ST3M507-3-7 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M507-3-7 (West Coast Aerospace, Inc.), ST3M507-3-7 (Houston Precision Fasteners I Lp), ST3M507-3-7 (Saturn Fasteners Inc), ST3M507-3-7 (The Boeing Company Div Defense) and 12 more.
Key specifications for ST3M507-3-7: Head Height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Fastener Length: 0.753 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN; Shoulder Length: 0.428 INCHES MINIMUM AND 0.448 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.