The Capstan, cataloged under National Stock Number 3950-01-122-6443, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Lewmar Ltd. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3950-01-122-6443 |
| Primary Part Number | 48AST |
| Item Name | Capstan |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Lewmar Ltd |
| Status | ACTIVE |
| Capstan Spool Style | STRAIGHT HEAD |
| Capstan Spool Surface Design | PLAIN |
| Capstan Spool Mounting Position | VERTICAL |
| Largest Diameter | 4.000 INCHES NOMINAL FIRST SPOOL IN |
| 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 |
|---|---|
| 48AST PRIMARY | Lewmar Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 13226E0369 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 3950-01-122-6443 is a Capstan, manufactured by Lewmar Ltd, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-122-6443 has 1 manufacturer part number on file: 48AST (Lewmar Ltd).
Key specifications for 48AST: Capstan Spool Style: STRAIGHT HEAD; Overall Length: 9.190 INCHES NOMINAL FIRST SPOOL9.190 INCHES NOMINAL FIRST SPOOL IN; Capstan Spool Surface Design: PLAIN; Capstan Spool Mounting Position: VERTICAL. 5 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.