The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-516-5651, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-516-5651 |
| Primary Part Number | BM17028-6-260 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Fastener Length | 2.009 INCHES MINIMUM AND 2.056 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MAC PS13145 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.364 INCHES MINIMUM AND 0.441 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | 23-105 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.884 INCHES MINIMUM AND 1.941 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 |
|---|---|
| MB13-6D26 | Hi-Shear Corporation (USA) |
| MB13-6D26 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| ST3M561-6D26 | Arizona Aero Fasteners, Inc Dba Arizona Aero Fasteners Inc (USA) |
| AIC244-6D26 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| MB13-6D26 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 73992-6D26 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| MB13-6D26 | Satair A/s (DNK) |
| BM17028-6-260 PRIMARY | Huck International, Inc (USA) |
| PBF1225-6D26 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BM17028-6-260 | 5/9 Secondary reference U.S. Government activity |
| ST3M561-6D26 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M561-6D26 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-00-516-5651 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-516-5651 has 9 manufacturer part numbers on file: MB13-6D26 (Hi-Shear Corporation), MB13-6D26 (Fairchild Fasteners Europe - Vsd Gmbh), ST3M561-6D26 (Arizona Aero Fasteners, Inc Dba Arizona Aero Fasteners Inc), AIC244-6D26 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), MB13-6D26 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 4 more.
Key specifications for BM17028-6-260: Head Height: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Fastener Length: 2.009 INCHES MINIMUM AND 2.056 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MAC PS13145 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.364 INCHES MINIMUM AND 0.441 INCHES MAXIMUM 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.