The Bolt,shoulder, cataloged under National Stock Number 5306-01-210-0731, 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 22 specifications, cited from the U.S. Government catalog. The record lists 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-210-0731 |
| Primary Part Number | ST3M607-6D37 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN |
| Head Height | 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN |
| Fastener Length | 2.911 INCHES MINIMUM AND 2.941 INCHES MAXIMUM IN |
| Shoulder Length | 2.302 INCHES MINIMUM AND 2.322 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.4052 INCHES MINIMUM AND 0.4057 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.589 INCHES MINIMUM AND 0.639 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.429 INCHES MINIMUM AND 0.449 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.688 INCHES MINIMUM AND 2.728 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 |
|---|---|
| S11-1063-6D37 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M607-6D37 | Reid Products Inc. Dba Reid Products Inc (USA) |
| MB87-6D37 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VAL23033-6D37X | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M607-6D37 PRIMARY | The Boeing Company Div Defense (USA) |
| MB87-6D37 | Hi-Shear Corporation (USA) |
| 4328-6D37Y | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BM3326-6D37Y | 5/9 Secondary reference U.S. Government activity |
| VS3061-6D37 | 5/2 Secondary reference U.S. Government activity |
| BM3326-6D37Y | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 74328-6D37Y | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba PB Fasteners |
NSN 5306-01-210-0731 is a Bolt,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-210-0731 has 7 manufacturer part numbers on file: S11-1063-6D37 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), ST3M607-6D37 (Reid Products Inc. Dba Reid Products Inc), MB87-6D37 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), VAL23033-6D37X (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M607-6D37 (The Boeing Company Div Defense) and 2 more.
Key specifications for ST3M607-6D37: Extended Washer Thickness: 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN; Head Height: 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN; Fastener Length: 2.911 INCHES MINIMUM AND 2.941 INCHES MAXIMUM IN; Shoulder Length: 2.302 INCHES MINIMUM AND 2.322 INCHES MAXIMUM FIRST SHOULDER IN. 22 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.