The Nut,self-Locking,gang Channel, cataloged under National Stock Number 5310-01-131-2249, 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 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-131-2249 |
| Primary Part Number | BCN445C5-5 |
| 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 | 0.722 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.280 INCHES MINIMUM NUT IN |
| Base Width | 0.475 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Counterbore Diameter | 0.317 INCHES MINIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.542 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND COPPER OR COPPER OVERALL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Base Thickness | 0.050 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| BCN445C5-5 PRIMARY | Bristol Industries, Llc (USA) |
| ST3M445C5M5 PRIMARY | The Boeing Company Div Defense (USA) |
| F49249E5-5XN PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| NS1039665-054-5 | 5/9 Secondary reference U.S. Government activity |
| 10109592 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| G18421L5-5 | 5/9 Secondary reference Harvard Industries Inc |
| NS103966S-054-5 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-131-2249 is a Nut,self-Locking,gang Channel, manufactured by Bristol Industries, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-131-2249 has 3 manufacturer part numbers on file: BCN445C5-5 (Bristol Industries, Llc), ST3M445C5M5 (The Boeing Company Div Defense), F49249E5-5XN (Howmet Global Fastening Systems Inc).
Key specifications for BCN445C5-5: Lubrication: DRY FILM LUBRICANT; Nut Length: 0.722 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Material Document and Classification: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL 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.