The Block,tackle, cataloged under National Stock Number 3940-01-491-4186, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3940-01-491-4186 |
| Primary Part Number | 14923474 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Load Rating | 110000.0 POUNDS MAXIMUM LBS |
| Block Type | REGULAR |
| Style Designator | HALF-OVAL PATTERN |
| Sheave Quantity | 1 |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 14923474 PRIMARY | Naval Sea Systems Command (USA) |
| 581-6726673 AY99 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 581-6726673-AY9 9 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 3940-01-491-4186 is a Block,tackle, manufactured by Naval Sea Systems Command, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-491-4186 has 2 manufacturer part numbers on file: 14923474 (Naval Sea Systems Command), 581-6726673 AY99 (Naval Sea Systems Command).
Key specifications for 14923474: Load Rating: 110000.0 POUNDS MAXIMUM LBS; Block Type: REGULAR; Style Designator: HALF-OVAL PATTERN; Special Features: CALLED AFT FWD STATIONARY SHEAVE ASSEMBLY. 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.