The Piston,windlass, cataloged under National Stock Number 3950-01-220-5745, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3950-01-220-5745 |
| Item Name | Piston,windlass |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Status | ACTIVE |
| General Characteristics Item Description | NICKEL COPPER;9.750 IN.LG;FIRST END 1.795 IN.DIA,0.750 IN.LG;FIRST STEP 2.995 IN.DIA,0.195 IN.LG;SECOND STEP 2.627 IN.DIA,0.410 IN.LG;THIRD STEP 2.995 IN.DIA,0.195 IN.LG;FOURTH STEP 1.795 IN.DIA,0.750 IN.LG;FIFTH STEP 1.371 IN.DIA,6.200 IN.LG;SECOND END 1 1/4-12NF-3 THD,1.250 IN.LG IN |
| 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 |
|---|---|
| SSN593-520-1862112 | D/9 Drawing number reference only U.S. Government activity |
| SSN593-520-1862112 PIECE 2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3950-01-220-5745 is a Piston,windlass, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3950-01-220-5746, 3010-01-220-9347. Verify interchangeability with system specifications before substitution.
Key specifications for 3950-01-220-5745: General Characteristics Item Description: NICKEL COPPER;9.750 IN.LG;FIRST END 1.795 IN.DIA,0.750 IN.LG;FIRST STEP 2.995 IN.DIA,0.195 IN.LG;SECOND STEP 2.627 IN.DIA,0.410 IN.LG;THIRD STEP 2.995 IN.DIA,0.195 IN.LG;FOURTH STEP 1.795 IN.DIA,0.750 IN.LG;FIFTH STEP 1.371 IN.DIA,6.200 IN.LG;SECOND END 1 1/4-12NF-3 THD,1.250 IN.LG 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.