The Block,tackle, cataloged under National Stock Number 3940-01-363-4680, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is Harken Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3940-01-363-4680 |
| Primary Part Number | 229 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Harken Inc |
| Status | ACTIVE |
| Attachment Style | CHAIN SHACKLE |
| Becket Type | PLAIN |
| Maximum Tackle Diameter Accommodated | 0.250 INCHES IN |
| Load Rating | 500.0 POUNDS MAXIMUM LBS |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 0.875 INCHES NOMINAL IN |
| Becket Quantity | 1 |
| Tackle Accommodated Type | WIRE ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 0.187 INCHES NOMINAL IN |
| Style Designator | PULLEY PATTERN |
| Shell Length | 2.000 INCHES NOMINAL IN |
| Sheave Quantity | 3 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Antitoppling Device | NOT INCLUDED |
| 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 |
|---|---|
| 229 PRIMARY | Harken Inc (USA) |
| Reference | Meaning |
|---|---|
| SC3940-0003-2 | 5/9 Secondary reference Drs Icas, Llc |
NSN 3940-01-363-4680 is a Block,tackle, manufactured by Harken Inc, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-363-4680 has 1 manufacturer part number on file: 229 (Harken Inc).
Key specifications for 229: Attachment Style: CHAIN SHACKLE; Becket Type: PLAIN; Maximum Tackle Diameter Accommodated: 0.250 INCHES IN; Load Rating: 500.0 POUNDS MAXIMUM LBS. 15 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.