The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-609-3751, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-609-3751 |
| Primary Part Number | G49439E3-2-7-4 |
| Item Name | Nut Assembly,self-Locking,gang C |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Surface Treatment Document and Classification | MIL-A-8625,TY 2,CL 1 OR MIL-DTL-5541 FOR ALCLAD MATL MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 4 |
| Removable Nut Manufacturer Part Number | ST3M445C3M2 |
| Material Document and Classification | AMS-QQ-A-250/13(ALCLAD) OR AMS-QQ-A-250/12 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE CHANNEL |
| Material Document and Classification | ST3-445 MFR REF SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | ST3-446 MFR REF SINGLE MATERIAL RESPONSE CLIP |
| Nut Counterbore Depth | 0.125 INCHES MINIMUM NUT IN |
| Channel Height | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.1900 INCHES IN |
| Specification/standard Data | 76301-3-463THRU465 MANUFACTURERS SPECIFICATION |
| Counterbore Diameter | 0.194 INCHES MINIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.309 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OR CHROMIUM CHANNEL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING NUT |
| Material | ALUMINUM ALLOY 7075 CHANNEL |
| Material | STEEL CORROSION RESISTING CLIP |
| Nut Spacing | 0.875 INCHES NOMINAL 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 |
|---|---|
| G49439E3-2-7-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BGC463N2-7-4 PRIMARY | Bristol Industries, Llc (USA) |
| 3M463N7A4-2 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| C170-3-2-7-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-609-3751 is a Nut Assembly,self-Locking,gang C, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-609-3751 has 3 manufacturer part numbers on file: G49439E3-2-7-4 (Howmet Global Fastening Systems Inc), BGC463N2-7-4 (Bristol Industries, Llc), 3M463N7A4-2 (The Boeing Company Div Defense).
Key specifications for G49439E3-2-7-4: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: MIL-A-8625,TY 2,CL 1 OR MIL-DTL-5541 FOR ALCLAD MATL MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Quantity: 4. 26 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.