The Lining,friction, cataloged under National Stock Number 3040-00-447-8845, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-447-8845 |
| Primary Part Number | A5223B |
| Item Name | Lining,friction |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Circular Pattern Hole Type and Quantity | 10 COUNTERSUNK INNER SECURING CIRCLE |
| Circular Pattern Hole Type and Quantity | 24 COUNTERBORED OUTER SECURING CIRCLE |
| Hole Arrangement Style | STAGGERED |
| Supplementary Features | THIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCES 75165 HAVE INDICATED THIER PART NUMBER CONTAINED ASBESTOS PRIOR TO 8 4. THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984 |
| Mounting Hole Diameter | 0.312 INCHES NOMINAL IN |
| Lining Style | CLUTCH DISK |
| Features Provided | RIGID FRICTION LINING |
| Mounting Hole Circle Diameter | 10.625 INCHES NOMINAL AND 7.735 INCHES NOMINAL IN |
| Attachment Method | RIVETED |
| Minor Diameter | 6.250 INCHES MINIMUM AND 6.281 INCHES MAXIMUM IN |
| Major Diameter | 11.344 INCHES MINIMUM AND 11.375 INCHES MAXIMUM IN |
| Thickness | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A5223B | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
| Reference | Meaning |
|---|---|
| A5223 | 3/9 Design control — primary reference Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
NSN 3040-00-447-8845 is a Lining,friction, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-447-8845 has 1 manufacturer part number on file: A5223B (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).
Key specifications for A5223B: Circular Pattern Hole Type and Quantity: 10 COUNTERSUNK INNER SECURING CIRCLE; Circular Pattern Hole Type and Quantity: 24 COUNTERBORED OUTER SECURING CIRCLE; Hole Arrangement Style: STAGGERED; Supplementary Features: THIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCES 75165 HAVE INDICATED THIER PART NUMBER CONTAINED ASBESTOS PRIOR TO 8 4. THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984. 12 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.