The Bolt,shoulder, cataloged under National Stock Number 5306-01-141-7868, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-141-7868 |
| Primary Part Number | 3M381-6-17 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Head Height | 0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Fastener Length | 1.625 INCHES MINIMUM AND 1.655 INCHES MAXIMUM IN |
| Shoulder Length | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.553 INCHES MINIMUM AND 0.603 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 3M381-6-17 | The Boeing Company Div Defense (USA) |
| 3M381-6-17 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M381-6-17 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M381-6-17 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M381-6-17 | 5/9 Secondary reference Sps Technologies Inc |
| 3M381-6-17 | 5/9 Secondary reference V B Products Inc Tulsa Ok |
| 3M381-6-17 | 5/9 Secondary reference U.S. Government activity |
| 3M381-6-17 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5306-01-141-7868 is a Bolt,shoulder, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-141-7868 has 4 manufacturer part numbers on file: 3M381-6-17 (The Boeing Company Div Defense), 3M381-6-17 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M381-6-17 (Sps Technologies, Llc Dba PB Fasteners), 3M381-6-17 (Howmet Global Fastening Systems Inc).
Key specifications for 3M381-6-17: Head Height: 0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN; Fastener Length: 1.625 INCHES MINIMUM AND 1.655 INCHES MAXIMUM IN; Shoulder Length: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.