The Link,hoisting, cataloged under National Stock Number 3940-01-502-0521, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-01-502-0521 |
| Primary Part Number | 596-7409690-A1 |
| Item Name | Link,hoisting |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING AND STEEL AND NICKEL |
| 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 |
|---|---|
| 596-7409690-A1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B831-3130-A1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3940-01-502-0521 is a Link,hoisting, manufactured by Naval Sea Systems Command, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-502-0521 has 1 manufacturer part number on file: 596-7409690-A1 (Naval Sea Systems Command).
Key specifications for 596-7409690-A1: Overall Height: 73.840 INCHES NOMINAL IN; Overall Length: 23.500 INCHES NOMINAL IN; Overall Width: 14.120 INCHES NOMINAL IN; Special Features: INCLUDES: A3-UPPER SUPPORT BRACKET ASSY; A4-LOWER LEG ASSY; A5-LEG, LOWER SUPPORT BRACKET ASSY. 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.