The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-00-063-2121, 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 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-063-2121 |
| Primary Part Number | RMG15B2-02-9 |
| 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 | UNF |
| Nut Quantity | 64 |
| Material Document and Classification | QQ-A-250/13 FED SPEC SINGLE MATERIAL RESPONSE CHANNEL |
| Nut Counterbore Depth | 0.125 INCHES MINIMUM NUT IN |
| Features Provided | FLOATING NUT |
| Channel Height | 0.120 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.272 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM NUT |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL NUT |
| Material | ALUMINUM ALLOY 7075 CHANNEL |
| Nut Spacing | 1.125 INCHES NOMINAL 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 |
|---|---|
| RMG15B2-02-9 PRIMARY | Esna, Llc (USA) |
| G19179-3-2-9 | Satair A/s (DNK) |
| 3M193-3-2-9 | The Boeing Company Div Defense (USA) |
| G19179-3-2-9 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| RMG15B2-02-9 | 5/9 Secondary reference Harvard Industries Inc |
| 3M193-3-2-9-4 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5310-00-063-2121 is a Nut Assembly,self-Locking,gang C, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-063-2121 has 4 manufacturer part numbers on file: RMG15B2-02-9 (Esna, Llc), G19179-3-2-9 (Satair A/s), 3M193-3-2-9 (The Boeing Company Div Defense), G19179-3-2-9 (Howmet Global Fastening Systems Inc).
Key specifications for RMG15B2-02-9: Lubrication: DRY FILM LUBRICANT; Thread Series: UNF; Nut Quantity: 64; Material Document and Classification: QQ-A-250/13 FED SPEC SINGLE MATERIAL RESPONSE CHANNEL. 19 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.