The Nut,self-Locking,gang Channel, cataloged under National Stock Number 5310-01-138-4712, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bristol Industries, Llc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-138-4712 |
| Primary Part Number | BCN445A3-1 |
| Item Name | Nut,self-Locking,gang Channel |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bristol Industries, Llc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Nut Length | 0.482 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Counterbore Depth | 0.041 INCHES MINIMUM NUT IN |
| Base Width | 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Counterbore Diameter | 0.194 INCHES MINIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.184 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Base Thickness | 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 32 |
| Material | STEEL 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 |
|---|---|
| BCN445A3-1 PRIMARY | Bristol Industries, Llc (USA) |
| CN50063-3-1 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 10109757 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| G14421-1-3 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M445A3M1 | 5/2 Secondary reference U.S. Government activity |
| ST3M445A3M1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| G14421-1-3 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-138-4712 is a Nut,self-Locking,gang Channel, manufactured by Bristol Industries, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-138-4712 has 2 manufacturer part numbers on file: BCN445A3-1 (Bristol Industries, Llc), CN50063-3-1 (Howmet Global Fastening Systems Inc).
Key specifications for BCN445A3-1: Lubrication: DRY FILM LUBRICANT; Nut Length: 0.482 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 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.