The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-526-3900, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-526-3900 |
| Primary Part Number | MB155-5H10 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.187 INCHES NOMINAL IN |
| Fastener Length | 1.076 INCHES MINIMUM AND 1.123 INCHES MAXIMUM IN |
| Thread Length | 0.467 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 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 | 0.517 INCHES NOMINAL IN |
| Grip Diameter | 0.311 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 | 0.973 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 |
|---|---|
| MB155-5H10 PRIMARY | Hi-Shear Corporation (USA) |
| S397-5H10 | Huck International, Inc (USA) |
| ST3M747-5H10 | Houston Precision Fasteners I Lp (USA) |
| GS1031-5H10 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| PBF1266-5H10 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M747-5H10 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| AIC688-5H10 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| SLB254-5H10 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| VCG0002-5H10 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HP7747-5H10 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 122896-5H10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M747-5H10 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 122896-5H10 | 3/2 Design control — primary reference U.S. Government activity |
| 122896-5H10 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-526-3900 is a Bolt,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-526-3900 has 12 manufacturer part numbers on file: MB155-5H10 (Hi-Shear Corporation), S397-5H10 (Huck International, Inc), ST3M747-5H10 (Houston Precision Fasteners I Lp), GS1031-5H10 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), PBF1266-5H10 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 7 more.
Key specifications for MB155-5H10: Head Height: 0.187 INCHES NOMINAL IN; Fastener Length: 1.076 INCHES MINIMUM AND 1.123 INCHES MAXIMUM IN; Thread Length: 0.467 INCHES NOMINAL IN; Shank Unthreaded Hole Diameter: 0.076 INCHES MINIMUM AND 0.081 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.