The Bolt,shear, cataloged under National Stock Number 5306-01-173-3545, 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 17 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-173-3545 |
| Primary Part Number | PBF 1267-4-31 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Extended Washer Thickness | 0.026 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN |
| Head Height | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Fastener Length | 2.328 INCHES MINIMUM AND 2.358 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| Thread Length | 0.443 INCHES MINIMUM AND 0.493 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 EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.297 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| 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 |
|---|---|
| PBF 1267-4-31 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| SLB255-4-31 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| ST3M753-4-31 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| MB156-4-31 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| AIC763-4-31 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VFK600-4-31 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB156-4-31 PRIMARY | Hi-Shear Corporation (USA) |
| GS1032-4-31 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| HP7753-4-31 | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| VS3190-4-31 | 5/9 Secondary reference U.S. Government activity |
| 122897-4-31 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M753-4-31 | 5/9 Secondary reference The Boeing Company Div Defense |
| 122897-4-31 | 5/9 Secondary reference Sps Technologies Inc |
| MB156-4-31 | 5/9 Secondary reference Am Multigraphics Div of Am Intl Inc |
| S343-4-31 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| S343-4-31 | 5/9 Secondary reference U.S. Government activity |
| VS3190-4-31 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
NSN 5306-01-173-3545 is a Bolt,shear, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-173-3545 has 9 manufacturer part numbers on file: PBF 1267-4-31 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), SLB255-4-31 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), ST3M753-4-31 (Fastener Innovation Technology, Inc. Dba F I T), MB156-4-31 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), AIC763-4-31 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 4 more.
Key specifications for PBF 1267-4-31: Extended Washer Thickness: 0.026 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN; Head Height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Fastener Length: 2.328 INCHES MINIMUM AND 2.358 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.