The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-00-906-0556, 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 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-906-0556 |
| Primary Part Number | RG7538-048 |
| Item Name | Nut Assembly,self-Locking,gang C |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Thread Series | UNF |
| Precious Material | SILVER |
| Nut Quantity | 4 |
| Features Provided | FLOATING NUT |
| Channel Height | 0.135 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.323 INCHES NOMINAL IN |
| Surface Treatment | SILVER NUT |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 2B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING NUT |
| Material | STEEL CORROSION RESISTING CHANNEL |
| Nut Spacing | 1.500 INCHES NOMINAL IN |
| Channel Style | RADIUS 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 |
|---|---|
| RG7538-048 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| RG7538-048 | 5/9 Secondary reference Harvard Industries Inc |
| 6846600 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-00-906-0556 is a Nut Assembly,self-Locking,gang C, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-906-0556 has 1 manufacturer part number on file: RG7538-048 (Esna, Llc).
Key specifications for RG7538-048: Thread Series: UNF; Precious Material: SILVER; Nut Quantity: 4; Overall Width: 0.421 INCHES NOMINAL IN. 17 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.