The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-440-5322, 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 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-440-5322 |
| Primary Part Number | 74B320086-103 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Extended Washer Thickness | 0.020 INCHES NOMINAL IN |
| Head Height | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 6.425 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.398 INCHES MINIMUM IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Material Document and Classification | NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 6.000 INCHES NOMINAL 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 | TITANIUM ALLOY 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 |
|---|---|
| 74B320086-103 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC746-3 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 74B320086-103 PRIMARY | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| MB250-103 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MB250-103 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 74B320086-103 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 10163819 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| AIC746-103 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 74B320086-103 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-440-5322 is a Bolt,close Tolerance, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-440-5322 has 5 manufacturer part numbers on file: 74B320086-103 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), AIC746-3 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 74B320086-103 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), MB250-103 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), MB250-103 (Hi-Shear Corporation).
Key specifications for 74B320086-103: Extended Washer Thickness: 0.020 INCHES NOMINAL IN; Head Height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Fastener Length: 6.425 INCHES NOMINAL IN; Extended Washer Diameter: 0.398 INCHES MINIMUM 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.