The Spider,cylinder and Feedback Ass, cataloged under National Stock Number 3040-01-434-6838, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-434-6838 |
| Item Name | Spider,cylinder and Feedback Ass |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Overall Diameter | 55.000 INCHES NOMINAL IN |
| General Characteristics Item Description | MATERIAL PER ASTM A36, 4 RADIAL ARMS, USED IN CYLINDER, ENGINE SHEAVE AND FEEDBACK ASSEMBLY |
| Surface Treatment | PRIMER AND PAINT |
| Material | STEEL |
| 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 |
|---|---|
| H554AX001 | D/9 Drawing number reference only U.S. Government activity |
| 117846 | 5/2 Secondary reference U.S. Government activity |
| PL-H554AX001 REV P FIND NO 123 | 5/2 Secondary reference U.S. Government activity |
| F554AX124 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-434-6838 is a Spider,cylinder and Feedback Ass, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-434-7828, 3040-01-434-7838. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-434-6838: Overall Diameter: 55.000 INCHES NOMINAL IN; General Characteristics Item Description: MATERIAL PER ASTM A36, 4 RADIAL ARMS, USED IN CYLINDER, ENGINE SHEAVE AND FEEDBACK ASSEMBLY; Surface Treatment: PRIMER AND PAINT; End Item Identification: WEAPONS SYSTEM STRATEGIC SEALIFT CONVERSIONS SHIPS CLASS. 4 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.