The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-049-8240, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-049-8240 |
| Primary Part Number | G50345-6P1-10-57 |
| 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 |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 57 |
| Features Provided | FLOATING NUT |
| Channel Height | 0.160 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Specification/standard Data | 76301-ST3-448 MANUFACTURERS STANDARD |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.362 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE CHANNEL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | IRON ALLOY 660 NUT |
| Nut Spacing | 1.240 INCHES MINIMUM AND 1.260 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 |
|---|---|
| G50345-6P1-10-57 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M776C1-10-57P | 3/2 Design control — primary reference U.S. Government activity |
| ST3M776C1-10-57 | 5/9 Secondary reference U.S. Government activity |
| G10851-6-10-2 | 5/9 Secondary reference The Boeing Company Div Defense |
| G10851-6-10 | 5/9 Secondary reference Harvard Industries Inc |
| ST3M776C1-10-57 | 5/9 Secondary reference The Boeing Company Div Defense |
| ST3M448C6M10-57 | 5/9 Secondary reference The Boeing Company Div Defense |
| G503345-6P1-10-57 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| G10851-6-10-5 | 5/9 Secondary reference Harvard Industries Inc |
| ST3M448C6M10 | 5/9 Secondary reference The Boeing Company Div Defense |
| ST3M776C1-10-57P | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| G10851-6-10-5 | 5/9 Secondary reference The Boeing Company Div Defense |
| G49760-6-10 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5310-01-049-8240 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 5310-01-049-8240 has 1 manufacturer part number on file: G50345-6P1-10-57 (Howmet Global Fastening Systems Inc).
Key specifications for G50345-6P1-10-57: Lubrication: DRY FILM LUBRICANT; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Quantity: 57; Overall Length: 72.000 INCHES NOMINAL IN. 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.