The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-204-3331, 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 27 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-204-3331 |
| Primary Part Number | ST3M543N14A41-2 |
| 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 | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 41 |
| Removable Nut Manufacturer Part Number | ST3M445A3M2 |
| Material Document and Classification | QQ-A-250/13,T6 FED SPEC SINGLE MATERIAL RESPONSE CHANNEL |
| Nut Counterbore Depth | 0.125 INCHES MINIMUM BASE IN |
| Features Provided | FLOATING NUT |
| Channel Height | 0.250 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Counterbore Diameter | 0.202 INCHES MINIMUM BASE IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.309 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE NUT |
| Surface Treatment | ANODIZE CHANNEL |
| Surface Treatment | PASSIVATE CLIP |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL NUT |
| Material | ALUMINUM ALLOY 7075 CHANNEL |
| Material | STEEL CORROSION RESISTING CLIP |
| Nut Spacing | 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN |
| Channel Style | STRAIGHT TYPE |
| Removable Nut Manufacturer Code | 76301 |
| 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 |
|---|---|
| ST3M543N14A41-2 | Bristol Industries, Llc (USA) |
| ST3M543N14A41-2 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M543N14A41-2 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| G14421-2-3-14-41 | 5/9 Secondary reference Harvard Industries Inc |
| ST3M543N14A41-2 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-204-3331 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 5310-01-204-3331 has 3 manufacturer part numbers on file: ST3M543N14A41-2 (Bristol Industries, Llc), ST3M543N14A41-2 (The Boeing Company Div Defense), ST3M543N14A41-2 (Howmet Global Fastening Systems Inc).
Key specifications for ST3M543N14A41-2: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 27 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.