The Nut,plain,round, cataloged under National Stock Number 5310-01-216-1354, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-216-1354 |
| Primary Part Number | 23018120 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Thread Series | UN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.250 INCHES NOMINAL IN |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 2.125 INCHES IN |
| Nut Diameter | 3.120 INCHES NOMINAL IN |
| Drive Point Depth | 0.120 INCHES NOMINAL IN |
| Nut Thickness | 0.285 INCHES NOMINAL IN |
| Countersink Angle | 120.0 DEGREES NOMINAL BOTH ENDS |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 1141 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-01-216-1354 is a Nut,plain,round, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-216-1354 has 2 manufacturer part numbers on file: 23018120 (Allison Transmission Inc Dba Allison Transmission, Inc), 23018120 (Hema Disli Sanayi Ve Tic.a.s.).
Key specifications for 23018120: Thread Series: UN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Drive Point Width: 0.250 INCHES NOMINAL IN. 15 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.