The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-643-1031, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-643-1031 |
| Primary Part Number | G50344-3-1-8-27 |
| 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 II, CL 1 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 57 |
| Channel Height | 0.203 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.250 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE CHANNEL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING NUT |
| Material | ALUMINUM ALLOY 7075 OR ALUMINUM ALLOY 2024 CHANNEL |
| Nut Spacing | 3.365 INCHES MINIMUM AND 3.385 INCHES MAXIMUM 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 |
|---|---|
| G50344-3-1-8-27 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BGC723N8-1-27 PRIMARY | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| ST3M723N1M8-27 | 3/2 Design control — primary reference U.S. Government activity |
| G50344-3-1-8-27 | 5/1 Secondary reference Fairchild Fasteners Uk Ltd |
| ST3M723N1M8-27 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5310-01-643-1031 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 5310-01-643-1031 has 2 manufacturer part numbers on file: G50344-3-1-8-27 (Howmet Global Fastening Systems Inc), BGC723N8-1-27 (Bristol Industries, Llc).
Key specifications for G50344-3-1-8-27: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: MIL-A-8625, TY II, CL 1 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Quantity: 57. 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.