The Block,tackle, cataloged under National Stock Number 3940-01-493-4091, 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 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-01-493-4091 |
| Primary Part Number | 581-6726673-AY97 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Tackle Accommodated Type | WIRE ROPE |
| Block Type | REGULAR |
| Style Designator | HALF-ROUND PATTERN |
| Sheave Quantity | 1 |
| 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 |
|---|---|
| 581-6726673-AY97 PRIMARY | Naval Sea Systems Command (USA) |
| DF2011-266 ASSY 97 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 14959431 | Naval Sea Systems Command (USA) |
NSN 3940-01-493-4091 is a Block,tackle, manufactured by Naval Sea Systems Command, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-493-4091 has 3 manufacturer part numbers on file: 581-6726673-AY97 (Naval Sea Systems Command), DF2011-266 ASSY 97 (Huntington Ingalls Inc Div Newport News Shipbuilding), 14959431 (Naval Sea Systems Command).
Key specifications for 581-6726673-AY97: Tackle Accommodated Type: WIRE ROPE; Block Type: REGULAR; Style Designator: HALF-ROUND PATTERN; Special Features: FWD UPPER STATIONARY SHEAVE ASSEMBLY. 4 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.