The Bolt,shoulder, cataloged under National Stock Number 5306-01-351-9186, 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. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-351-9186 |
| Primary Part Number | 124231-4D24 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Fastener Length | 1.910 INCHES MINIMUM AND 1.940 INCHES MAXIMUM IN |
| Shoulder Length | 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.722 INCHES MINIMUM AND 1.772 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 |
|---|---|
| AIC1699-4D24 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 124231-4D24 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| PBF1480-4D24 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BA0017AC3-4C24 | Lfc Industries, Inc. (USA) |
| 03A217-4D24 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| VS3364-4D24 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| VS3364-4D24 | 5/9 Secondary reference U.S. Government activity |
| 124231-4D24 | 5/9 Secondary reference U.S. Government activity |
| 03A217-4D24 | 5/2 Secondary reference U.S. Government activity |
| 03A217-4D24 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 5306-01-351-9186 is a Bolt,shoulder, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-351-9186 has 5 manufacturer part numbers on file: AIC1699-4D24 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 124231-4D24 (Sps Technologies, Llc Dba PB Fasteners), PBF1480-4D24 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BA0017AC3-4C24 (Lfc Industries, Inc.), 03A217-4D24 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for 124231-4D24: Head Height: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN; Fastener Length: 1.910 INCHES MINIMUM AND 1.940 INCHES MAXIMUM IN; Shoulder Length: 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 19 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.