The Bolt,shoulder, cataloged under National Stock Number 5306-01-339-8427, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Quantum Lean Llc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-339-8427 |
| Primary Part Number | 126B842H01 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Quantum Lean Llc |
| Status | ACTIVE |
| Head Height | 0.156 INCHES NOMINAL IN |
| Fastener Length | 12.284 INCHES NOMINAL IN |
| Shoulder Length | 0.350 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.265 INCHES MINIMUM AND 0.304 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.280 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.062 INCHES MINIMUM AND 0.065 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | ASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.313 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 12.204 INCHES NOMINAL 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 |
|---|---|
| 126B842H01 | Quantum Lean Llc (USA) |
| 126B842H01 | Micro Machining, Inc (USA) |
| 126B842H01 | Tillman Tool Company Inc Dba Tillman Tool (USA) |
| Reference | Meaning |
|---|---|
| 126B842H01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-339-8427 is a Bolt,shoulder, manufactured by Quantum Lean Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-339-8427 has 3 manufacturer part numbers on file: 126B842H01 (Quantum Lean Llc), 126B842H01 (Micro Machining, Inc), 126B842H01 (Tillman Tool Company Inc Dba Tillman Tool).
Key specifications for 126B842H01: Head Height: 0.156 INCHES NOMINAL IN; Fastener Length: 12.284 INCHES NOMINAL IN; Shoulder Length: 0.350 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.265 INCHES MINIMUM AND 0.304 INCHES MAXIMUM FIRST SHOULDER IN. 18 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.