The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-031-6945, 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 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-031-6945 |
| Primary Part Number | G49439E4-2-15 |
| 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 | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 38 |
| Temp Rating | 350.0 FAHRENHEIT NOMINAL DEGF |
| Removable Nut Manufacturer Part Number | ST3M445C4M2 |
| Material Document and Classification | AMS5525 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | QQ-A-250/13 T6 FED SPEC SINGLE MATERIAL RESPONSE CHANNEL |
| Nut Counterbore Depth | 0.125 INCHES MINIMUM NUT IN |
| Features Provided | FLOATING NUT |
| Channel Height | 0.298 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Specification/standard Data | 76301-ST3-464 MANUFACTURERS STANDARD |
| Counterbore Diameter | 0.254 INCHES MINIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.351 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE NUT |
| Surface Treatment | ANODIZE CHANNEL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 NUT |
| Nut Spacing | 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM 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 |
|---|---|
| 3M464N15A38-2 | Bristol Industries, Llc (USA) |
| G49439E4-2-15 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M464N15A38-2 PRIMARY | The Boeing Company Div Defense (USA) |
| 3M464N15A38-2 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 3M464N115A38-2 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company Div Defense |
| C170-4-2-15 | 3/2 Design control — primary reference U.S. Government activity |
| G18421JL2-4-15 | 5/9 Secondary reference Harvard Industries Inc |
| ST3M464N15A38-2 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5310-01-031-6945 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 5310-01-031-6945 has 4 manufacturer part numbers on file: 3M464N15A38-2 (Bristol Industries, Llc), G49439E4-2-15 (Howmet Global Fastening Systems Inc), 3M464N15A38-2 (The Boeing Company Div Defense), 3M464N15A38-2 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for G49439E4-2-15: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Quantity: 38. 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.