The Boot Strap,wheel Cylinder, cataloged under National Stock Number 2530-00-028-3331, 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 Dressta North America Ltd. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-00-028-3331 |
| Primary Part Number | 74147 |
| Item Name | Boot Strap,wheel Cylinder |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Dressta North America Ltd |
| Status | ACTIVE |
| General Characteristics Item Description | FOR 1-3/4 DIA WHEEL CYLINDER,SPRING STEEL /ANNEALED STOCK),ROCKWELL HARDNESS C 48 TO 55,DEVELOPED LG 7.125 IN.,0.125 IN. W,0.049 MATERIAL THK,0.375 IN. TO 0.500 IN. OVERLAP 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 |
|---|---|
| 74147 PRIMARY | Dressta North America Ltd (USA) |
| F4742 PRIMARY | Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA) |
| FC4742 | Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA) |
| 4B9001 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 471710 | 5/9 Secondary reference Komatsu America Corp. |
| 74147 | 5/9 Secondary reference Komatsu America Corporation |
| D74147 | 5/9 Secondary reference Komatsu America Corporation |
| 471710 | 5/9 Secondary reference Wabco Construction and Mining Equipment Group Indianapolis Plant an American Standard Inc Co |
| FC4742 | 5/9 Secondary reference U.S. Government activity |
| H8444 | 5/9 Secondary reference American Standard Inc Westinghouse Air Brake Co Div |
| 471710 | 5/9 Secondary reference Komatsu American Intl Co |
NSN 2530-00-028-3331 is a Boot Strap,wheel Cylinder, manufactured by Dressta North America Ltd, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-00-028-3331 has 4 manufacturer part numbers on file: 74147 (Dressta North America Ltd), F4742 (Federal Mogul Corp Sub Wagner Brake Moog Automotive Div), FC4742 (Federal Mogul Corp Sub Wagner Brake Moog Automotive Div), 4B9001 (Caterpillar Inc Div Caterpillar Defense).
2 possible matches (shared part number, not a government interchangeability claim): 4240-01-249-3528, 8110-01-554-9404. Verify interchangeability with system specifications before substitution.
Key specifications for 74147: General Characteristics Item Description: FOR 1-3/4 DIA WHEEL CYLINDER,SPRING STEEL /ANNEALED STOCK),ROCKWELL HARDNESS C 48 TO 55,DEVELOPED LG 7.125 IN.,0.125 IN. W,0.049 MATERIAL THK,0.375 IN. TO 0.500 IN. OVERLAP 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.