The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-526-3893, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-526-3893 |
| Primary Part Number | SLB254-6H10 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
| Status | ACTIVE |
| Head Height | 0.210 INCHES NOMINAL IN |
| Fastener Length | 1.125 INCHES MINIMUM AND 1.172 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 | 0.615 INCHES MINIMUM AND 0.635 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 | 1.021 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 |
|---|---|
| SLB254-6H10 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| GS1031-6H10 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M747-6H10 PRIMARY | The Boeing Company Div Defense (USA) |
| PBF1266-6H10 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VCG0002-6H10 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| AIC688-6H10 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HP7747-6H10 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| MB155-6H10 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M747-6H10 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| S397-6H10 PRIMARY | Huck International, Inc (USA) |
| 122896-6H10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M747-6H10 | Houston Precision Fasteners I Lp (USA) |
| Reference | Meaning |
|---|---|
| 122896-6H10 | 5/9 Secondary reference Sps Technologies Inc |
| 122896-6H10 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-526-3893 is a Bolt,close Tolerance, manufactured by Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-526-3893 has 12 manufacturer part numbers on file: SLB254-6H10 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), GS1031-6H10 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), ST3M747-6H10 (The Boeing Company Div Defense), PBF1266-6H10 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VCG0002-6H10 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 7 more.
Key specifications for SLB254-6H10: Head Height: 0.210 INCHES NOMINAL IN; Fastener Length: 1.125 INCHES MINIMUM AND 1.172 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.