The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-165-2453, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-165-2453 |
| Primary Part Number | PBF1266-4-6 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.164 INCHES NOMINAL IN |
| Fastener Length | 0.756 INCHES MINIMUM AND 0.803 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 |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.448 INCHES MINIMUM AND 0.455 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) |
| 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 |
|---|---|
| PBF1266-4-6 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VCG0002-4-6 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB155-4-6 PRIMARY | Hi-Shear Corporation (USA) |
| MB155-4-6 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M747-4-6 PRIMARY | The Boeing Company Div Defense (USA) |
| GS1031-4-6 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| AIC688-4-6 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VS3191-4-6 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 11833-4-6 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 122896-4-6 | 3/2 Design control — primary reference U.S. Government activity |
| S397-4-6 | 5/9 Secondary reference U.S. Government activity |
| VS3191-4-6 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-165-2453 is a Bolt,close Tolerance, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-165-2453 has 9 manufacturer part numbers on file: PBF1266-4-6 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VCG0002-4-6 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MB155-4-6 (Hi-Shear Corporation), MB155-4-6 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M747-4-6 (The Boeing Company Div Defense) and 4 more.
Key specifications for PBF1266-4-6: Head Height: 0.164 INCHES NOMINAL IN; Fastener Length: 0.756 INCHES MINIMUM AND 0.803 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. 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.