The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-078-5979, 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 22 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-078-5979 |
| Primary Part Number | MB84-5-22 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Extended Washer Thickness | 0.082 INCHES NOMINAL IN |
| Head Height | 0.348 INCHES NOMINAL IN |
| Fastener Length | 1.911 INCHES MINIMUM AND 1.941 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 TY 1 OR TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Thread Length | 0.536 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN |
| Hardness Rating | 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.375 INCHES NOMINAL IN |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| ST3M571-5-22 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| VAL23033-5-22 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB84-5-22 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| S11-1059-5-22 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| GS1030-5-22 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| MB84-5-22 PRIMARY | Hi-Shear Corporation (USA) |
| 74328-5-22 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC752-5-22 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M571-5-22 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M571-5-22 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 74328-5-22 | 3/2 Design control — primary reference U.S. Government activity |
| S371-5-22 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| S371-5-22 | 5/9 Secondary reference U.S. Government activity |
| VS3060-5-22 | 3/2 Design control — primary reference U.S. Government activity |
| 642AS0735-5 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| BM3326-5-22 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| VS3060-5-22 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| BM3326-5-22 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-078-5979 is a Bolt,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-078-5979 has 10 manufacturer part numbers on file: ST3M571-5-22 (Fastener Innovation Technology, Inc. Dba F I T), VAL23033-5-22 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MB84-5-22 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), S11-1059-5-22 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), GS1030-5-22 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace) and 5 more.
Key specifications for MB84-5-22: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Extended Washer Thickness: 0.082 INCHES NOMINAL IN. 22 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.