The Kingpin,wheel Spindle, cataloged under National Stock Number 2530-00-423-9357, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-00-423-9357 |
| Primary Part Number | 4B5185 |
| Item Name | Kingpin,wheel Spindle |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Length | 8.938 INCHES NOMINAL IN |
| Threaded Securing End | NOT INCLUDED |
| Retaining Device Type | LOCKPIN SLOT |
| Material Document and Classification | QQ-S-624A, NO. 86174, HOT ROLLED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE A |
| Diameter | 1.4340 INCHES MINIMUM AND 1.4345 INCHES MAXIMUM IN |
| Lubrication Fitting Threaded Hole | NOT INCLUDED |
| Casehardening Indicator | NOT CASEHARDENED |
| Distance From Nearest End to Groove/slot Center | 4.125 INCHES NOMINAL IN |
| Depth | 0.123 INCHES NOMINAL IN |
| Width | 0.843 INCHES NOMINAL IN |
| Screwdriver Slotted End | NOT INCLUDED |
| Material | STEEL |
| 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 |
|---|---|
| 4B5185 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2530-00-423-9357 is a Kingpin,wheel Spindle, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-00-423-9357 has 1 manufacturer part number on file: 4B5185 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4B5185: Length: 8.938 INCHES NOMINAL IN; Threaded Securing End: NOT INCLUDED; Retaining Device Type: LOCKPIN SLOT; Material Document and Classification: QQ-S-624A, NO. 86174, HOT ROLLED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE A. 12 specifications are 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.