The Block and Tackle, cataloged under National Stock Number 3940-01-493-3505, 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 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3940-01-493-3505 |
| Primary Part Number | 752-6405291 AY 96 |
| Item Name | Block and Tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Attachment Style | FLATTED STIFF SWIVEL SAFETY SNAP HOOK |
| Block Type | REGULAR |
| Style Designator | OVAL PATTERN AND PULLEY PATTERN |
| Tackle Block Quantity | 2 |
| Sheave Quantity | 1 AND 3 |
| 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 |
|---|---|
| 752-6405291 AY 96 PRIMARY | Naval Sea Systems Command (USA) |
| 211087257 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 752-6405291 AY9 6 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 3940-01-493-3505 is a Block and Tackle, manufactured by Naval Sea Systems Command, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-493-3505 has 2 manufacturer part numbers on file: 752-6405291 AY 96 (Naval Sea Systems Command), 211087257 (Naval Sea Systems Command).
Key specifications for 752-6405291 AY 96: Attachment Style: FLATTED STIFF SWIVEL SAFETY SNAP HOOK; Block Type: REGULAR; Style Designator: OVAL PATTERN AND PULLEY PATTERN; Tackle Block Quantity: 2. 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.