The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-241-2672, 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 21 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-241-2672 |
| Primary Part Number | ST3M776C1-11-24P |
| 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-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL |
| Thread Series | UNF |
| Nut Quantity | 24 |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE CHANNEL |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Specification/standard Data | 76301-3-448 MANUFACTURERS STANDARD |
| Counterbore Diameter | 0.375 INCHES NOMINAL NUT IN |
| 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 |
| Material | STEEL COMP 321 CHANNEL |
| Nut Spacing | 1.365 INCHES MINIMUM AND 1.385 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 |
|---|---|
| ST3M776C1-11-24P PRIMARY | The Boeing Company Div Defense (USA) |
| 3M448C6M11 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M448C6M11 | 5/9 Secondary reference Fairchild Fasteners Uk Ltd |
| G49460-6-11 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| G10851-6-11 | 5/9 Secondary reference Harvard Industries Inc |
| G49461-6-11 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| ST3M448C6M11-24 | 5/9 Secondary reference The Boeing Company Div Defense |
| 3M448C6M11 | 5/9 Secondary reference Bristol Industries, Llc |
| C177-6-11 | 5/2 Secondary reference U.S. Government activity |
| G10851-6-11-2 | 5/9 Secondary reference The Boeing Company Div Defense |
| 3M448C6M11 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5310-01-241-2672 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 5310-01-241-2672 has 2 manufacturer part numbers on file: ST3M776C1-11-24P (The Boeing Company Div Defense), 3M448C6M11 (Howmet Global Fastening Systems Inc).
Key specifications for ST3M776C1-11-24P: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL; Thread Series: UNF; Nut Quantity: 24. 21 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.