The Ring, cataloged under National Stock Number 2520-01-059-9288, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-059-9288 |
| Primary Part Number | 1M4169 |
| Item Name | Ring |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL;CASE HARDENED;6.250 IN. OD;0.141 IN. THK WALL;0.124 IN. WALL H;STRAIGHT WALL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1M4169 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2520-01-059-9288 is a Ring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-059-9288 has 1 manufacturer part number on file: 1M4169 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 1M4169: General Characteristics Item Description: STEEL;CASE HARDENED;6.250 IN. OD;0.141 IN. THK WALL;0.124 IN. WALL H;STRAIGHT WALL IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.