The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-00-508-2190, 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 21 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-508-2190 |
| Primary Part Number | 3M448N3M9 |
| 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 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL |
| Thread Series | UNF |
| Nut Quantity | 64 |
| Temp Rating | 300.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Nut Counterbore Depth | 0.062 INCHES MINIMUM NUT IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Specification/standard Data | 76301-ST3-448 MANUFACTURERS STANDARD |
| Counterbore Diameter | 0.194 INCHES MINIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.250 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE CHANNEL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 NUT |
| Nut Spacing | 1.115 INCHES MINIMUM AND 1.135 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 |
|---|---|
| 3M448N3M9 | Howmet Global Fastening Systems Inc (USA) |
| ST3M448N3M9 | Bristol Industries, Llc (USA) |
| ST3M448N3M9 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| G10851J3-9 | 3/9 Design control — primary reference Harvard Industries Inc |
| 10121434 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST3M448N3M9 | 5/2 Secondary reference U.S. Government activity |
| ST3M448N3M9 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5310-00-508-2190 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 5310-00-508-2190 has 3 manufacturer part numbers on file: 3M448N3M9 (Howmet Global Fastening Systems Inc), ST3M448N3M9 (Bristol Industries, Llc), ST3M448N3M9 (The Boeing Company Div Defense).
Key specifications for 3M448N3M9: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL; Thread Series: UNF; Nut Quantity: 64. 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.