The Nut,self-Locking,gang Channel, cataloged under National Stock Number 5310-01-239-8501, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-239-8501 |
| Primary Part Number | ST3M445A5M2 |
| Item Name | Nut,self-Locking,gang Channel |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Nut Length | 0.722 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Base Width | 0.475 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.344 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE 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 | 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 |
|---|---|
| ST3M445A5M2 | Howmet Global Fastening Systems Inc (USA) |
| ST3M445A5M2 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M445A5M2 | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| 10110195 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST3M445A5M2 | 5/2 Secondary reference U.S. Government activity |
| CN50063-5-2 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| G14421-2-5 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-239-8501 is a Nut,self-Locking,gang Channel, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-239-8501 has 3 manufacturer part numbers on file: ST3M445A5M2 (Howmet Global Fastening Systems Inc), ST3M445A5M2 (The Boeing Company Div Defense), ST3M445A5M2 (Bristol Industries, Llc).
Key specifications for ST3M445A5M2: Lubrication: DRY FILM LUBRICANT; Nut Length: 0.722 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 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.