The Bolt,shoulder, cataloged under National Stock Number 5306-01-045-9503, 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 9 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-045-9503 |
| Primary Part Number | ST3M507-3-19 |
| 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 | 1.503 INCHES MINIMUM AND 1.550 INCHES MAXIMUM IN |
| Shoulder Length | 1.115 INCHES MINIMUM AND 1.135 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 |
|---|---|
| MB89-3-19 | Hi-Shear Corporation (USA) |
| S11-1062-3-19 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| PBF1366-3-19 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MB89-3-19 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M507-3-19 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M507-3-19 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| VAL23608-3-19 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 109451-3-19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 109451-3-19 | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| VS3038-3-19 | 5/9 Secondary reference U.S. Government activity |
| ST3M507-3-19 | C/1 Advisory reference — outside the item-of-supply concept J M Precision Inc |
| MA5507-3-19 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 109451-3-19 | 5/2 Secondary reference U.S. Government activity |
| 109453-3-19Y | 5/9 Secondary reference U.S. Government activity |
| BM17019-3-196 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM17019-3-19Y | 5/9 Secondary reference U.S. Government activity |
| 109453-3-19Y | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5306-01-045-9503 is a Bolt,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-045-9503 has 9 manufacturer part numbers on file: MB89-3-19 (Hi-Shear Corporation), S11-1062-3-19 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), PBF1366-3-19 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), MB89-3-19 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M507-3-19 (The Boeing Company Div Defense) and 4 more.
Key specifications for ST3M507-3-19: Head Height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Fastener Length: 1.503 INCHES MINIMUM AND 1.550 INCHES MAXIMUM IN; Shoulder Length: 1.115 INCHES MINIMUM AND 1.135 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.