The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-013-2994, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Esna, Llc. Government technical data includes 24 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-013-2994 |
| Primary Part Number | G18421L2-4-10 |
| Item Name | Nut Assembly,self-Locking,gang C |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 57 |
| Removable Nut Manufacturer Part Number | ST3M445C4M2 |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | AMS 5510 ASSN STD 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 | 0.341 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE CHANNEL |
| Surface Treatment | NICKEL AND COPPER ALLOY NUT |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 NUT |
| Nut Spacing | 1.250 INCHES NOMINAL 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 |
|---|---|
| G18421L2-4-10 PRIMARY | Esna, Llc (USA) |
| ST3M464C10A57-2P PRIMARY | The Boeing Company Div Defense (USA) |
| G49250E4-2-10 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| C17054-2-10 | 5/9 Secondary reference U.S. Government activity |
| C170S4-2-10 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M464C10A57-2 | 5/9 Secondary reference The Boeing Company Div Defense |
| G18421L2-4-10 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-013-2994 is a Nut Assembly,self-Locking,gang C, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-013-2994 has 3 manufacturer part numbers on file: G18421L2-4-10 (Esna, Llc), ST3M464C10A57-2P (The Boeing Company Div Defense), G49250E4-2-10 (Howmet Global Fastening Systems Inc).
Key specifications for G18421L2-4-10: Lubrication: DRY FILM LUBRICANT; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Quantity: 57; Removable Nut Manufacturer Part Number: ST3M445C4M2. 24 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.