The Bolt,shoulder, cataloged under National Stock Number 5306-01-239-4220, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-239-4220 |
| Primary Part Number | 7-317236840 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Head Height | 0.195 INCHES NOMINAL IN |
| Fastener Length | 12.232 INCHES NOMINAL IN |
| Shoulder Diameter | 0.312 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.260 INCHES NOMINAL SECOND SHOULDER IN |
| Shoulder Diameter | 0.312 INCHES NOMINAL THIRD SHOULDER IN |
| Thread Pitch in Millimeters | 1.0 |
| Shoulder Shape | ROUND OVERALL |
| Head Style | UNDERCUT HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.512 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | MJ |
| 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 |
|---|---|
| 7-317236840 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-317236840 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5306-01-239-4220 is a Bolt,shoulder, manufactured by The Boeing Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-239-4220 has 1 manufacturer part number on file: 7-317236840 (The Boeing Company).
Key specifications for 7-317236840: Head Height: 0.195 INCHES NOMINAL IN; Fastener Length: 12.232 INCHES NOMINAL IN; Shoulder Diameter: 0.312 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.260 INCHES NOMINAL SECOND SHOULDER IN. 12 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.