The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-353-3413, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-353-3413 |
| Primary Part Number | BACN10HR4CF |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.438 INCHES MAXIMUM IN |
| Width Across Flats | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Washer Thickness | 0.020 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.250 INCHES MINIMUM AND 0.280 INCHES MAXIMUM FIRST END IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| 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 |
|---|---|
| BACN10HR4CF | Howmet Global Fastening Systems Inc (USA) |
| BACN10HR4CF | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACN10HR4CF | Alcoa Global Fasteners, Inc Dba Simmonds Mecaero Fas Pdts Div Simmonds Mecaero Fas Pdts (USA) |
| VCU00054DL | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BHQ03034F | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| CR-6220 | 5/2 Secondary reference U.S. Government activity |
| SL70594FA | 5/9 Secondary reference Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace |
| BACN10HR4CF | 3/2 Design control — primary reference U.S. Government activity |
| BACN10HR4CF | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-353-3413 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-353-3413 has 5 manufacturer part numbers on file: BACN10HR4CF (Howmet Global Fastening Systems Inc), BACN10HR4CF (Sps Technologies, Llc Dba PB Fasteners), BACN10HR4CF (Alcoa Global Fasteners, Inc Dba Simmonds Mecaero Fas Pdts Div Simmonds Mecaero Fas Pdts), VCU00054DL (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BHQ03034F (Bristol Industries, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-670-0520. Verify interchangeability with system specifications before substitution.
Key specifications for BACN10HR4CF: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.310 INCHES MAXIMUM IN; Washer Outside Diameter: 0.438 INCHES MAXIMUM IN; Width Across Flats: 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN. 15 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.