The Lining,friction, cataloged under National Stock Number 2530-00-447-8533, 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 Bridgestone Americas Tire Operations, Llc. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-00-447-8533 |
| Primary Part Number | BB4327D |
| Item Name | Lining,friction |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Bridgestone Americas Tire Operations, Llc |
| Status | ACTIVE |
| Minor Thickness | 0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN |
| Hole Arrangement Style | DOUBLE EVEN |
| Arc Length | 8.969 INCHES NOMINAL IN |
| Lining Style | SEGMENT TAPERED |
| Features Provided | RIGID FRICTION LINING |
| Major Thickness | 0.728 INCHES MINIMUM AND 0.738 INCHES MAXIMUM IN |
| Application Type | DRY |
| Attachment Method | RIVETED |
| Width | 4.969 INCHES MINIMUM AND 5.031 INCHES MAXIMUM IN |
| Minor Radius | 8.000 INCHES NOMINAL IN |
| Material | ASBESTOS FRICTION LINING |
| Fabrication Method | MOLDED |
| Hole Type and Quantity | 8 COUNTERBORED |
| 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 |
|---|---|
| BB4327D PRIMARY | Bridgestone Americas Tire Operations, Llc (USA) |
| Reference | Meaning |
|---|---|
| 2240Y1091 | 5/9 Secondary reference Meritor Heavy Vehicle Systems, Llc |
| 2240Y909 | 5/9 Secondary reference White Motor Corp |
| PTBX4327D | 5/9 Secondary reference U.S. Government activity |
NSN 2530-00-447-8533 is a Lining,friction, manufactured by Bridgestone Americas Tire Operations, Llc, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-00-447-8533 has 1 manufacturer part number on file: BB4327D (Bridgestone Americas Tire Operations, Llc).
Key specifications for BB4327D: Minor Thickness: 0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN; Hole Arrangement Style: DOUBLE EVEN; Arc Length: 8.969 INCHES NOMINAL IN; Lining Style: SEGMENT TAPERED. 13 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.