The Block,tackle, cataloged under National Stock Number 3940-00-189-9620, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-00-189-9620 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Status | ACTIVE |
| Attachment Style | FRONT EYE ROUND LOOSE HOOK |
| Sheave Bearing Lubrication Method | SELF-LUBRICATED |
| Maximum Tackle Diameter Accommodated | 1.125 INCHES IN |
| Load Rating | 6900.0 POUNDS MAXIMUM LBS |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 6.500 INCHES NOMINAL IN |
| Tackle Accommodated Type | FIBROUS ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 0.750 INCHES NOMINAL IN |
| Style Designator | OVAL PATTERN |
| Shell Length | 10.000 INCHES NOMINAL IN |
| Bearing Type | PLAIN |
| Surface Treatment | PAINT SHELL |
| Surface Treatment | ZINC SHEAVE |
| Sheave Quantity | 2 |
| Material | STEEL SHEAVE |
| Material | WOOD SHELL |
| Material | STEEL CENTER PIN |
| Material | COPPER ALLOY BEARING |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY THE SHELL LENGTH REQUIREMENT |
| 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 |
| Reference | Meaning |
|---|---|
| S1801-860402PC1T03-5T07-9T011-1- | 3/1 Design control — primary reference U.S. Government activity |
NSN 3940-00-189-9620 is a Block,tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
Key specifications for 3940-00-189-9620: Attachment Style: FRONT EYE ROUND LOOSE HOOK; Sheave Bearing Lubrication Method: SELF-LUBRICATED; Maximum Tackle Diameter Accommodated: 1.125 INCHES IN; Load Rating: 6900.0 POUNDS MAXIMUM LBS. 21 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.