The Housing,swivel Sheave, cataloged under National Stock Number 3950-01-273-3700, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Appleton Marine Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3950-01-273-3700 |
| Primary Part Number | 4684686 |
| Item Name | Housing,swivel Sheave |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Appleton Marine Inc |
| Status | ACTIVE |
| General Characteristics Item Description | O/A BASE LG 28.625 IN.; TUBE OD 4.000 IN.; TUBE WALL THK 0.250 IN.; PLUG DIA 1.500 IN.; PLUG LG 1.000 IN.; W/FILLER AND CHEEK PLATES 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 |
|---|---|
| 4684686 PRIMARY | Appleton Marine Inc (USA) |
| Reference | Meaning |
|---|---|
| 4684686 | D/9 Drawing number reference only U.S. Government activity |
NSN 3950-01-273-3700 is a Housing,swivel Sheave, manufactured by Appleton Marine Inc, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-273-3700 has 1 manufacturer part number on file: 4684686 (Appleton Marine Inc).
Key specifications for 4684686: General Characteristics Item Description: O/A BASE LG 28.625 IN.; TUBE OD 4.000 IN.; TUBE WALL THK 0.250 IN.; PLUG DIA 1.500 IN.; PLUG LG 1.000 IN.; W/FILLER AND CHEEK PLATES 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.