The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-423-6665, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Johnson Controls Navy Systems, Llc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-423-6665 |
| Primary Part Number | 021-11608 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 10 |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 476-01138 ITEM 66 | Johnson Controls Navy Systems, Llc (USA) |
| 021-11608 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 021-11608A | C/1 Advisory reference — outside the item-of-supply concept Johnson Controls Navy Systems, Llc |
NSN 5310-01-423-6665 is a Nut,plain,hexagon, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-423-6665 has 2 manufacturer part numbers on file: 476-01138 ITEM 66 (Johnson Controls Navy Systems, Llc), 021-11608 (Johnson Controls Navy Systems, Llc).
Key specifications for 021-11608: Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: LEFT-HAND; Nominal Thread Size: 0.750 INCHES IN; Thread Class: 2B. 6 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.