The Nut,self-Locking,gang Channel, cataloged under National Stock Number 5310-01-133-5834, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-133-5834 |
| Primary Part Number | ST3M818-4M7 |
| 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 | 0.557 INCHES MINIMUM AND 0.567 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 | 0.154 INCHES MINIMUM FIRST END IN |
| Base Width | 0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.254 INCHES MINIMUM AND 0.267 INCHES MAXIMUM FIRST END IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.564 INCHES MAXIMUM IN |
| Surface Treatment | COPPER OR NICKEL OVERALL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Base Thickness | 0.040 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN |
| 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 |
|---|---|
| ST3M818-4M7 PRIMARY | The Boeing Company Div Defense (USA) |
| F50942-4-7XN | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 10109684 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| F50942-4-7XN | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc. Div Microdot Products |
NSN 5310-01-133-5834 is a Nut,self-Locking,gang Channel, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-133-5834 has 2 manufacturer part numbers on file: ST3M818-4M7 (The Boeing Company Div Defense), F50942-4-7XN (Howmet Global Fastening Systems Inc).
Key specifications for ST3M818-4M7: Lubrication: DRY FILM LUBRICANT; Nut Length: 0.557 INCHES MINIMUM AND 0.567 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.