The Lining,friction, cataloged under National Stock Number 3950-00-426-2643, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3950-00-426-2643 |
| Item Name | Lining,friction |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Status | ACTIVE |
| Supplementary Features | THIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCES 08302 HAVE INDICATED THIER PART NUMBER CONTAINED ASBESTOS PRIOR TO 8 4. THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984 |
| Lining Style | CLUTCH DISK |
| Features Provided | RIGID FRICTION LINING |
| Surface Condition and Location | BOTH SIDES GROUND |
| Application Type | DRY |
| Minor Diameter | 3.000 INCHES NOMINAL IN |
| Fabrication Method | MOLDED |
| Major Diameter | 4.984 INCHES NOMINAL IN |
| Thickness | 0.188 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 20-248-7 | 5/9 Secondary reference Paccar Winch Inc Dba Paccar Winch Division |
| 11979 | 3/9 Design control — primary reference Paccar Winch Inc Dba Paccar Winch Division |
NSN 3950-00-426-2643 is a Lining,friction, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-00-757-4486, 6145-01-259-3774. Verify interchangeability with system specifications before substitution.
Key specifications for 3950-00-426-2643: Supplementary Features: THIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCES 08302 HAVE INDICATED THIER PART NUMBER CONTAINED ASBESTOS PRIOR TO 8 4. THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984; Lining Style: CLUTCH DISK; Features Provided: RIGID FRICTION LINING; Surface Condition and Location: BOTH SIDES GROUND. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.