The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-114-3795, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-114-3795 |
| Primary Part Number | ST3M453-4-37 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN |
| Fastener Length | 2.693 INCHES MINIMUM AND 2.740 INCHES MAXIMUM IN |
| Thread Length | 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Material Document and Classification | 23-112 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.302 INCHES MINIMUM AND 2.322 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL 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 |
|---|---|
| 11825-4-37 | Reid Products Inc. Dba Reid Products Inc (USA) |
| MB61-4-37 | Hi-Shear Corporation (USA) |
| PBF1253-4-37 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MB61-4-37 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| GS1016-4-37 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M453-4-37 PRIMARY | The Boeing Company Div Defense (USA) |
| AIC753-4-37 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VAL23029-4-37 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| S353-4-37 | 5/9 Secondary reference U.S. Government activity |
| BM17019-4-37 | 5/9 Secondary reference U.S. Government activity |
| VS3204-4-37 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-114-3795 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-114-3795 has 8 manufacturer part numbers on file: 11825-4-37 (Reid Products Inc. Dba Reid Products Inc), MB61-4-37 (Hi-Shear Corporation), PBF1253-4-37 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), MB61-4-37 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), GS1016-4-37 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace) and 3 more.
Key specifications for ST3M453-4-37: Head Height: 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; Fastener Length: 2.693 INCHES MINIMUM AND 2.740 INCHES MAXIMUM IN; Thread Length: 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Material Document and Classification: 23-112 FSCM 76301 MFR REF 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.