The Cylinder,governor, cataloged under National Stock Number 2990-00-116-0433, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-116-0433 |
| Primary Part Number | 1S4741 |
| Item Name | Cylinder,governor |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| General Characteristics Item Description | IRON,2.800 IN. DIA FLANGE,2 BOLT HOLES 0.228 IN. DIA REAMED 0.246 IN.,3 BOLT HOLES 0.281 IN. DIA,1.730 IN. LG,1.234 IN. DIA,0.279 IN. @FLANGE THK IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2990-00-116-0433 is a Cylinder,governor, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-116-0433 has 2 manufacturer part numbers on file: 1S4741 (Caterpillar Inc Div Caterpillar Defense), 1634358 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 6505-01-701-8424. Verify interchangeability with system specifications before substitution.
Key specifications for 1S4741: General Characteristics Item Description: IRON,2.800 IN. DIA FLANGE,2 BOLT HOLES 0.228 IN. DIA REAMED 0.246 IN.,3 BOLT HOLES 0.281 IN. DIA,1.730 IN. LG,1.234 IN. DIA,0.279 IN. @FLANGE THK IN. 1 specification is 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.