The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-025-6434, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Valley-Todeco, Inc. Dba Arconic Fastening Systems. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-025-6434 |
| Primary Part Number | VAL23029-4-18 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| 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 |
| Thread Length | 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| 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 | 0.430 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 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 |
|---|---|
| ST3M453-4-18 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VAL23029-4-18 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M453-4-18 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| MB61-4-18 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MB61-4-18 PRIMARY | Hi-Shear Corporation (USA) |
| AIC753-4-18 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 11825-4-18 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 109453-4-18 | 3/2 Design control — primary reference U.S. Government activity |
| US3204-4-18 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M453-4-18 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| BM17019-4-18 | 5/9 Secondary reference U.S. Government activity |
| 109453-4-18 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BM17019-4-18 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M453-4-18 | 5/9 Secondary reference M.s. Aerospace Inc. Dba Ms Aerospace Inc |
NSN 5306-01-025-6434 is a Bolt,close Tolerance, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-025-6434 has 7 manufacturer part numbers on file: ST3M453-4-18 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VAL23029-4-18 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M453-4-18 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), MB61-4-18 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), MB61-4-18 (Hi-Shear Corporation) and 2 more.
Key specifications for VAL23029-4-18: Head Height: 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; Fastener Length: 1.506 INCHES MINIMUM AND 1.553 INCHES MAXIMUM IN; Thread Length: 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Material Document and Classification: AMS 5629 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.