The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-526-4011, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 12 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-526-4011 |
| Primary Part Number | HP7747-6H15 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Head Height | 0.210 INCHES NOMINAL IN |
| Fastener Length | 1.438 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN |
| Thread Length | 0.516 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Criticality Code Justification | AGAV |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.582 INCHES NOMINAL IN |
| Grip Diameter | 0.374 INCHES NOMINAL IN |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.334 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 | Y |
| Part Number | Manufacturer |
|---|---|
| HP7747-6H15 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| SLB254-6H15 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| ST3M747-6H15 | Houston Precision Fasteners I Lp (USA) |
| ST3M747-6H15 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| PBF1266-6H15 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VCG0002-6H15 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| GS1031-6H15 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| AIC688-6H15 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| MB155-6H15 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M747-6H15 PRIMARY | The Boeing Company Div Defense (USA) |
| 122896-6H15 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| S397-6H15 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 122896-6H15 | 5/9 Secondary reference Sps Technologies Inc |
| 122896-6H15 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-526-4011 is a Bolt,close Tolerance, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-526-4011 has 12 manufacturer part numbers on file: HP7747-6H15 (Heartland Precision Fasteners Inc), SLB254-6H15 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), ST3M747-6H15 (Houston Precision Fasteners I Lp), ST3M747-6H15 (Fastener Innovation Technology, Inc. Dba F I T), PBF1266-6H15 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 7 more.
Key specifications for HP7747-6H15: Head Height: 0.210 INCHES NOMINAL IN; Fastener Length: 1.438 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN; Thread Length: 0.516 INCHES NOMINAL IN; Shank Unthreaded Hole Diameter: 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN. 13 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.