The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-179-9790, 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 17 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through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-179-9790 |
| Primary Part Number | ST3M453-4D18 |
| 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 | 1.506 INCHES MINIMUM AND 1.553 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN |
| Width Between Flats | 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.385 INCHES MINIMUM AND 1.442 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 |
|---|---|
| MB61-4D18 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M453-4D18 PRIMARY | The Boeing Company Div Defense (USA) |
| 11825-4D18 | Reid Products Inc. Dba Reid Products Inc (USA) |
| AIC753-4D18 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| S11-1060-4D18 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| VAL23029-4D18 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M453-4D18 | Heartland Precision Fasteners Inc (USA) |
| ST3M453-4D18 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M453-4D18 | J M Precision Inc (USA) |
| PBF1253-4D18 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M453-4D18 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M453-4D18 | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| MB61-4D18 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| S353-4D18 | 5/9 Secondary reference U.S. Government activity |
| KS3020-4D18 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| 109453-4D18 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| MA5453-4D18 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| ST3M453-4D18 | 5/9 Secondary reference Sps Technologies Inc |
| VS3204-4D18 | 5/9 Secondary reference U.S. Government activity |
| VS3204-4D18 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| S353-4D18 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M453-4D18 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| 10116106 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| BM17019-4D18 | 5/9 Secondary reference U.S. Government activity |
| 109453-4D18 | 5/2 Secondary reference U.S. Government activity |
| BM17019-4D18 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5306-01-179-9790 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-179-9790 has 13 manufacturer part numbers on file: MB61-4D18 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M453-4D18 (The Boeing Company Div Defense), 11825-4D18 (Reid Products Inc. Dba Reid Products Inc), AIC753-4D18 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), S11-1060-4D18 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries) and 8 more.
Key specifications for ST3M453-4D18: Head Height: 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; Fastener Length: 1.506 INCHES MINIMUM AND 1.553 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN. 17 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.