The Head,linear Actuating Cylinder, cataloged under National Stock Number 3040-01-189-8672, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-189-8672 |
| Item Name | Head,linear Actuating Cylinder |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Overall Thickness | 4.500 INCHES MAXIMUM IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2640-680X2 | D/9 Drawing number reference only U.S. Government activity |
| SS845-2180772 PIECE 4 | 5/2 Secondary reference U.S. Government activity |
| SS845-2180772 | D/9 Drawing number reference only U.S. Government activity |
| 2640-680X2 PIECE 4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-189-8672 is a Head,linear Actuating Cylinder, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-190-5929, 3010-01-190-5930, 3010-01-190-5931. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-189-8672: Overall Thickness: 4.500 INCHES MAXIMUM IN; Overall Length: 1.750 INCHES MAXIMUM IN; Overall Width: 4.000 INCHES MAXIMUM IN; Special Features: 1ST SIDE 2.625 IN.ID BORE BY 0.875 IN.DEEP;3 PORTS,TOP PORT 0.875-14 IN.UNF 2B THD,1 PORT EACH SIDE 0.312-24 IN.UNF 2B THD;4 BOLT HOLES,0.531 IN.ID COUNTERBORE 0.781 IN.ID BY 0.625 IN.DEEP IN. 2 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.
NSN 3040-01-189-8672 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.