The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-169-6772, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-169-6772 |
| Primary Part Number | MB84-7-18 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.089 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN |
| Head Height | 0.425 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN |
| Fastener Length | 1.815 INCHES MINIMUM AND 1.845 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Thread Length | 0.680 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.437 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN |
| Width Between Flats | 0.502 INCHES NOMINAL IN |
| Grip Diameter | 0.4365 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| MB84-7-18 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| AIC752-7-18 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M571-7-18 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BM3326-7-18 PRIMARY | Huck International, Inc (USA) |
| S11-1059-7-18 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| VS3060-7-18 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| MB84-7-18 PRIMARY | Hi-Shear Corporation (USA) |
| S371-7-18 PRIMARY | Huck International, Inc (USA) |
| VAL23033-7-18 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| 74328-7-18 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 10116074 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74328-7-18 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M571-7-18 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| S371-7-18 | 5/9 Secondary reference U.S. Government activity |
| BM3326-7-18 | 5/9 Secondary reference U.S. Government activity |
| VS3060-7-18 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-169-6772 is a Bolt,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-169-6772 has 9 manufacturer part numbers on file: MB84-7-18 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), AIC752-7-18 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M571-7-18 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BM3326-7-18 (Huck International, Inc), S11-1059-7-18 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries) and 4 more.
Key specifications for MB84-7-18: Extended Washer Thickness: 0.089 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN; Head Height: 0.425 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN; Fastener Length: 1.815 INCHES MINIMUM AND 1.845 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.