The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-326-3986, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 22 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-326-3986 |
| Primary Part Number | ST3M453-5-11 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Head Height | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Fastener Length | 1.139 INCHES MINIMUM AND 1.186 INCHES MAXIMUM IN |
| Thread Length | 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| ST3M453-5-11 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M453-5-11 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| MB61-5-11 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MB61-5-11 | Hi-Shear Corporation (USA) |
| ST3M453-5-11 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| ST3M453-5-11 PRIMARY | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| ST3M453-5-11 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| 11825-5-11 | Reid Products Inc. Dba Reid Products Inc (USA) |
| GS1016-5-11 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M453-5-11 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| ST3M453-5-11 PRIMARY | Huck International, Inc (USA) |
| ST3M453-5-11 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M453-5-11 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M453-5-11 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M453-5-11 PRIMARY | West Coast Aerospace, Inc. (USA) |
| ST3M453-5-11 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M453-5-11 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M453-5-11 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M453-5-11 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| 109453-5-11 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| ST3M453-5-11 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| US3204-5-11 | 5/9 Secondary reference U.S. Government activity |
| BM17019-5-11 | 5/9 Secondary reference U.S. Government activity |
| ST3M453-5-11 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M453-5-11 | 3/2 Design control — primary reference U.S. Government activity |
| 109453-5-11 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-00-326-3986 is a Bolt,close Tolerance, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-326-3986 has 22 manufacturer part numbers on file: ST3M453-5-11 (Fastener Innovation Technology, Inc. Dba F I T), ST3M453-5-11 (Sps Technologies, Llc Dba PB Fasteners), MB61-5-11 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), MB61-5-11 (Hi-Shear Corporation), ST3M453-5-11 (Houston Precision Fasteners I Lp) and 17 more.
Key specifications for ST3M453-5-11: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Fastener Length: 1.139 INCHES MINIMUM AND 1.186 INCHES MAXIMUM IN; Thread Length: 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES 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.