The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-044-8529, 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 16 specifications, cited from the U.S. Government catalog. The record lists 15 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-044-8529 |
| Primary Part Number | FIT7047-5D40 |
| 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 | 2.951 INCHES MINIMUM AND 2.998 INCHES MAXIMUM IN |
| Thread Length | 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-453 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 2.490 INCHES MINIMUM AND 2.510 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 COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.827 INCHES MINIMUM AND 2.884 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 |
|---|---|
| FIT7047-5D40 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| MB61-5D40 PRIMARY | Hi-Shear Corporation (USA) |
| S11-1060-5D40 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| VS3204-5D40 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| SLB252-5D40 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| VAL23029-5D40 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 11825-5D40 | Reid Products Inc. Dba Reid Products Inc (USA) |
| PBF1253-5D40 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC753-5D40 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BM17019-5D40 PRIMARY | Huck International, Inc (USA) |
| HP5453-5D40 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 109453-5D40 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| WC453-5D40 | West Coast Aerospace, Inc. (USA) |
| ST3M453-5D40 | Houston Precision Fasteners I Lp (USA) |
| GS1016-5D40 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| MB61-5D40 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| S353-5D40 | 5/9 Secondary reference Huck International, Inc |
| 109453-5D40 | 3/2 Design control — primary reference U.S. Government activity |
| S353-5D40 | 5/9 Secondary reference U.S. Government activity |
| ST3M453-5D40 | 5/9 Secondary reference M.s. Aerospace Inc. Dba Ms Aerospace Inc |
| BM17019-5D40 | 5/9 Secondary reference U.S. Government activity |
| ST3M453-5D40 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| US3204-5D40 | 5/9 Secondary reference U.S. Government activity |
| US3204-5D40 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5306-01-044-8529 is a Bolt,close Tolerance, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-044-8529 has 15 manufacturer part numbers on file: FIT7047-5D40 (Fastener Innovation Technology, Inc. Dba F I T), MB61-5D40 (Hi-Shear Corporation), S11-1060-5D40 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), VS3204-5D40 (Howmet Global Fastening Systems Inc), SLB252-5D40 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok) and 10 more.
Key specifications for FIT7047-5D40: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Fastener Length: 2.951 INCHES MINIMUM AND 2.998 INCHES MAXIMUM IN; Thread Length: 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN. 16 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.