The Adapter,sheave Housing, cataloged under National Stock Number 3950-01-294-1820, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3950-01-294-1820 |
| Primary Part Number | 5746939-1 |
| Item Name | Adapter,sheave Housing |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CORROSION RESISTANT,4.500 IN. LG,3.500 IN. W,0.438 IN. THK,ONE STRAIGHT THRU HOLE 3/8-16 UNC INT THD,USED ON LEFT HAND SIDE,PART OF OUTHAUL AIR CLUTCH IN |
| 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 |
|---|---|
| 5746939-1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5746939 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3950-01-294-1820 is a Adapter,sheave Housing, manufactured by Naval Sea Systems Command, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-294-1820 has 1 manufacturer part number on file: 5746939-1 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3950-01-294-1821. Verify interchangeability with system specifications before substitution.
Key specifications for 5746939-1: General Characteristics Item Description: STEEL,CORROSION RESISTANT,4.500 IN. LG,3.500 IN. W,0.438 IN. THK,ONE STRAIGHT THRU HOLE 3/8-16 UNC INT THD,USED ON LEFT HAND SIDE,PART OF OUTHAUL AIR CLUTCH 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.