The Lining,friction, cataloged under National Stock Number 2530-00-363-6542, is classified within Federal Supply Class 2530 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 2530-00-363-6542 |
| Primary Part Number | 4A0521 |
| Item Name | Lining,friction |
| FSC / FSG | 2530 / 25 — No Item Name Available |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | CANCELLED |
| Supplementary Features | THIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCES 11083 HAVE INDICATED THIER PART NUMBER CONTAINED ASBESTOS PRIOR TO 8 4. THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984 |
| Attachment Method | RIVETED |
| Circular Pattern Hole Type and Quantity | 3 COUNTERBORED OUTER SECURING CIRCLE |
| Major Diameter | 5.469 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN |
| Fabrication Method | WOVEN |
| Surface Condition and Location | BOTH SIDES GROUND |
| Features Provided | RIGID FRICTION LINING |
| Lining Style | CLUTCH DISK |
| Minor Diameter | 2.750 INCHES MINIMUM AND 2.781 INCHES MAXIMUM IN |
| Application Type | DRY |
| Thickness | 0.152 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Circular Pattern Hole Type and Quantity | 3 COUNTERBORED INNER SECURING CIRCLE |
| Hole Arrangement Style | STAGGERED |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FMS518 | Raybestos-Manhattan Inc (USA) |
| 4A0521 | Universal Friction Composites Vices Inc Dba Universal Friction Composites (USA) |
| 4A0521 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 518 | Raybestos-Manhattan Inc (USA) |
| M518 | Universal Friction Composites Vices Inc Dba Universal Friction Composites (USA) |
| 4A521 | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2530-00-363-6542 is a Lining,friction, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2530 (No Item Name Available). Status: cancelled.
NSN 2530-00-363-6542 has 6 cross-referenced part numbers: FMS518 (Raybestos-Manhattan Inc), 4A0521 (Universal Friction Composites Vices Inc Dba Universal Friction Composites), 4A0521 (Caterpillar Inc Div Caterpillar Defense), 518 (Raybestos-Manhattan Inc), M518 (Universal Friction Composites Vices Inc Dba Universal Friction Composites) and 1 more.
There are 5 known substitutes for 2530-00-363-6542: 4730-00-152-0128, 5305-01-158-6644, 3110-01-244-3703 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4A0521: Supplementary Features: THIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCES 11083 HAVE INDICATED THIER PART NUMBER CONTAINED ASBESTOS PRIOR TO 8 4. THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984; Attachment Method: RIVETED; Circular Pattern Hole Type and Quantity: 3 COUNTERBORED OUTER SECURING CIRCLE; Major Diameter: 5.469 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN. 13 total characteristics are documented in the Federal Logistics Information System.
NSN 2530-00-363-6542 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.