The Block and Tackle, cataloged under National Stock Number 3940-00-641-3225, 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21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3940-00-641-3225 |
| Item Name | Block and Tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Status | ACTIVE |
| Attachment Style | FRONT EYE ROUND LOOSE HOOK |
| Becket Type | THIMBLE |
| Maximum Tackle Diameter Accommodated | 0.375 INCHES IN |
| Load Rating | 300.0 POUNDS MAXIMUM LBS |
| Tackle Nominal Length | 125.0 FEET FT |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 1.750 INCHES NOMINAL IN |
| Becket Quantity | 1 |
| Tackle Accommodated Type | FIBROUS ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 0.375 INCHES NOMINAL IN |
| Style Designator | ROUND PATTERN |
| Tackle Block Quantity | 2 |
| Shell Length | 3.000 INCHES NOMINAL IN |
| Bearing Type | PLAIN |
| Sheave Quantity | 2 |
| Material | WOOD SHELL |
| Material | IRON SHEAVE |
| Material | IRON BEARING |
| Material | IRON CENTER PIN |
| 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 |
|---|---|
| SCC25407 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3940-00-641-3225 is a Block and Tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
Key specifications for 3940-00-641-3225: Attachment Style: FRONT EYE ROUND LOOSE HOOK; Becket Type: THIMBLE; Maximum Tackle Diameter Accommodated: 0.375 INCHES IN; Load Rating: 300.0 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.