The Bolt,shoulder, cataloged under National Stock Number 5306-01-044-8507, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-044-8507 |
| Primary Part Number | PBF1254-8D19 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Fastener Length | 1.821 INCHES MINIMUM AND 1.868 INCHES MAXIMUM IN |
| Shoulder Length | 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.514 INCHES MINIMUM AND 0.515 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.623 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-497 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.693 INCHES MINIMUM AND 1.750 INCHES MAXIMUM FIRST HOLE IN |
| 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 |
|---|---|
| 11915-8D19 | Reid Products Inc. Dba Reid Products Inc (USA) |
| MA5497-8S19 | Abounding Security Inc Div of Maa Corp (USA) |
| PBF1254-8D19 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MB88-8D19 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MB88-8D19 PRIMARY | Hi-Shear Corporation (USA) |
| VAL23607-8D19 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| VS3037-8D19 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| VS3037-8D19 | 5/9 Secondary reference U.S. Government activity |
| 109453-8D19X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 109453-8D19X | 5/9 Secondary reference U.S. Government activity |
| 109450-8D19 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M497-8D19 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| BM17019-8D19X | 5/9 Secondary reference U.S. Government activity |
| S11-1061-8D19 | 5/9 Secondary reference Park Advanced Composite Materials, Inc. |
NSN 5306-01-044-8507 is a Bolt,shoulder, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-044-8507 has 6 manufacturer part numbers on file: 11915-8D19 (Reid Products Inc. Dba Reid Products Inc), MA5497-8S19 (Abounding Security Inc Div of Maa Corp), PBF1254-8D19 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), MB88-8D19 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), MB88-8D19 (Hi-Shear Corporation) and 1 more.
Key specifications for PBF1254-8D19: Head Height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Fastener Length: 1.821 INCHES MINIMUM AND 1.868 INCHES MAXIMUM IN; Shoulder Length: 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.514 INCHES MINIMUM AND 0.515 INCHES MAXIMUM FIRST SHOULDER IN. 17 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.