The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-477-6793, 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 13 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-477-6793 |
| Primary Part Number | ST3M453-3-27 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.130 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Fastener Length | 2.004 INCHES MINIMUM AND 2.050 INCHES MAXIMUM IN |
| Thread Length | 0.331 INCHES NOMINAL IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM IN |
| Width Between Flats | 0.420 INCHES MINIMUM 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 |
|---|---|
| BM17019-3-27 | Huck International, Inc (USA) |
| FIT7047-3-27 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| MB61-3-27 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M453-3-27 PRIMARY | The Boeing Company Div Defense (USA) |
| VS3204-3-27 | Howmet Global Fastening Systems Inc (USA) |
| 109453-3-27 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC753-3-27 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 11825-3-27 | Reid Products Inc. Dba Reid Products Inc (USA) |
| MB61-3-27 | Hi-Shear Corporation (USA) |
| VAL23029-3-27 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HP5453-3-27 | Heartland Precision Fasteners Inc (USA) |
| S11-1060-3-27 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| PBF1253-3-27 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 109453-3-27 | 5/2 Secondary reference U.S. Government activity |
| ST3M453 | D/9 Drawing number reference only The Boeing Company Div Defense |
| KS3020-3-27 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| 109453-3-27 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-477-6793 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-477-6793 has 13 manufacturer part numbers on file: BM17019-3-27 (Huck International, Inc), FIT7047-3-27 (Fastener Innovation Technology, Inc. Dba F I T), MB61-3-27 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M453-3-27 (The Boeing Company Div Defense), VS3204-3-27 (Howmet Global Fastening Systems Inc) and 8 more.
12 possible matches (shared part number, not a government interchangeability claim): 5306-01-477-6795, 5306-01-477-9644, 5306-01-477-9652. Verify interchangeability with system specifications before substitution.
Key specifications for ST3M453-3-27: Head Height: 0.130 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Fastener Length: 2.004 INCHES MINIMUM AND 2.050 INCHES MAXIMUM IN; Thread Length: 0.331 INCHES NOMINAL IN; Material Document and Classification: AMS5629 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.