The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-623-0281, 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 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-623-0281 |
| Primary Part Number | ST3M723C1M7-4P |
| Item Name | Nut Assembly,self-Locking,gang C |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Surface Treatment Document and Classification | MIL-S-5002 PLUS TWO COATS MIL-PRF-85582,TY I,CLASS C2;PRIMER APPLIED PER MIL-STD-7179 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 4 |
| Material Document and Classification | AMS5510 ASSN STD SINGLE MATERIAL RESPONSE CHANNEL |
| Material Document and Classification | AMS5525 OR AMS5732 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Channel Height | 0.203 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.1900 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.250 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE CHANNEL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING NUT |
| Material | STEEL CORROSION RESISTING CHANNEL |
| Nut Spacing | 0.875 INCHES NOMINAL IN |
| Channel Style | STRAIGHT TYPE |
| 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 |
|---|---|
| ST3M723C1M7-4P PRIMARY | The Boeing Company Div Defense (USA) |
| G50345-3P1-7-4 | Howmet Global Fastening Systems Inc (USA) |
| BGC723C7-1-4P | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| ST3M723C1M7-4P | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-623-0281 is a Nut Assembly,self-Locking,gang C, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-623-0281 has 3 manufacturer part numbers on file: ST3M723C1M7-4P (The Boeing Company Div Defense), G50345-3P1-7-4 (Howmet Global Fastening Systems Inc), BGC723C7-1-4P (Bristol Industries, Llc).
Key specifications for ST3M723C1M7-4P: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: MIL-S-5002 PLUS TWO COATS MIL-PRF-85582,TY I,CLASS C2;PRIMER APPLIED PER MIL-STD-7179 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Quantity: 4. 19 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.