The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-013-3996, 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 14 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-013-3996 |
| Primary Part Number | MB61-3-22 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 1.690 INCHES MINIMUM AND 1.737 INCHES MAXIMUM IN |
| Thread Length | 0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| ST3M453-3-22 | Howmet Global Fastening Systems Inc (USA) |
| ST3M453-3-22 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 11825-3-22 | Reid Products Inc. Dba Reid Products Inc (USA) |
| MB61-3-22 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M453-3-22 | Heartland Precision Fasteners Inc (USA) |
| GS1016-3-22 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| VAL23029-3-22 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M453-3-22 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| MB61-3-22 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| AIC753-3-22 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M453-3-22 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| FLT7047-3-22 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| ST3M453-3-22 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| A1C753-3-22 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| US3204-3-22 | 3/2 Design control — primary reference U.S. Government activity |
| 109453-3-22 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M453-3-22 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 109453-3-22 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BM17019-3-22 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM17019-3-22 | 5/9 Secondary reference U.S. Government activity |
| ST3M453-3-22 | 5/9 Secondary reference Morgen Industries Inc |
NSN 5306-01-013-3996 is a Bolt,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-013-3996 has 12 manufacturer part numbers on file: ST3M453-3-22 (Howmet Global Fastening Systems Inc), ST3M453-3-22 (Sps Technologies, Llc Dba PB Fasteners), 11825-3-22 (Reid Products Inc. Dba Reid Products Inc), MB61-3-22 (Hi-Shear Corporation), ST3M453-3-22 (Heartland Precision Fasteners Inc) and 7 more.
Key specifications for MB61-3-22: Head Height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Fastener Length: 1.690 INCHES MINIMUM AND 1.737 INCHES MAXIMUM IN; Thread Length: 0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN; Material Document and Classification: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 14 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.