The Capstan, cataloged under National Stock Number 3950-00-527-7031, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Continental Emsco Co Skagit Products Div. Government technical data includes 20 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3950-00-527-7031 |
| Primary Part Number | RC3556H |
| Item Name | Capstan |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Continental Emsco Co Skagit Products Div |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 MOTOR CONTROLLER |
| Duty Cycle | INTERMITTENT |
| Capstan Spool Style | STRAIGHT HEAD |
| Phase | THREE |
| Frequency in Hertz | 60.0 |
| Inclosure Type | FULLY INCLOSED |
| Current Type | ACAC |
| Capstan Spool Quantity | 1 |
| Braking Method | ELECTRIC |
| Voltage in Volts | 440.0 |
| Cooling Method | ANY ACCEPTABLE |
| Travel Rate Per Minute | 50.0 FEET FT |
| Prime Mover Quantity | 11 |
| Capstan Spool Surface Design | PLAIN |
| Environmental Protection | WATERTIGHTWATERTIGHT |
| Capstan Spool Mounting Position | VERTICAL |
| Prime Mover Type | ELECTRIC MOTOR |
| Largest Diameter | 30.000 INCHES NOMINAL FIRST SPOOL IN |
| Power Requirement Rating | 40.00 HORSEPOWER |
| Operation Method | POWERED |
| 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 |
|---|---|
| RC3556H PRIMARY | Continental Emsco Co Skagit Products Div (USA) |
| Reference | Meaning |
|---|---|
| A666REVAPC16 | 5/2 Secondary reference U.S. Government activity |
| 572-2200-1417166ALTAPC14 | 5/2 Secondary reference U.S. Government activity |
| 576-2100-1506524REVAPC16 | 5/2 Secondary reference U.S. Government activity |
| D389 | 5/2 Secondary reference U.S. Government activity |
NSN 3950-00-527-7031 is a Capstan, manufactured by Continental Emsco Co Skagit Products Div, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-00-527-7031 has 1 manufacturer part number on file: RC3556H (Continental Emsco Co Skagit Products Div).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-346-3046, 6135-01-379-0393. Verify interchangeability with system specifications before substitution.
Key specifications for RC3556H: Furnished Items and Quantity: 1 MOTOR CONTROLLER; Duty Cycle: INTERMITTENT; Capstan Spool Style: STRAIGHT HEAD; Phase: THREE. 20 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.