The Bolt,shoulder, cataloged under National Stock Number 5306-01-045-9508, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Valley-Todeco, Inc. Dba Arconic Fastening Systems. Government technical data includes 17 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-045-9508 |
| Primary Part Number | VAL23608-4D27 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Head Height | 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN |
| Fastener Length | 2.069 INCHES MINIMUM AND 2.116 INCHES MAXIMUM IN |
| Shoulder Length | 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.2802 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-507 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.948 INCHES MINIMUM AND 2.005 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 |
|---|---|
| VAL23608-4D27 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M507-4D27 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M507-4D27 | Heartland Precision Fasteners Inc (USA) |
| ST3M507-4D27 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M507-4D27 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MB89-4D27 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MB89-4D27 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| ST3M507-4D27 | 5/2 Secondary reference U.S. Government activity |
| VS3038-4D27 | 5/9 Secondary reference U.S. Government activity |
| 109453-4D27Y | 3/2 Design control — primary reference U.S. Government activity |
| VS3038-4D27 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 109453-4D27Y | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BM17019-4D27Y | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM17019-4D27Y | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-045-9508 is a Bolt,shoulder, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-045-9508 has 7 manufacturer part numbers on file: VAL23608-4D27 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M507-4D27 (The Boeing Company Div Defense), ST3M507-4D27 (Heartland Precision Fasteners Inc), ST3M507-4D27 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), ST3M507-4D27 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 2 more.
Key specifications for VAL23608-4D27: Head Height: 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; Fastener Length: 2.069 INCHES MINIMUM AND 2.116 INCHES MAXIMUM IN; Shoulder Length: 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.2802 INCHES MINIMUM AND 0.2807 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.