The Block and Tackle, cataloged under National Stock Number 3940-01-283-2826, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3940-01-283-2826 |
| Primary Part Number | 606437 |
| Item Name | Block and Tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Maximum Tackle Diameter Accommodated | 1.500 INCHES IN |
| Load Rating | 1000.0 POUNDS MAXIMUM LBS |
| Tackle Nominal Length | 175.0 FEET FT |
| Sheave Outside Diameter | 4.500 INCHES NOMINAL IN |
| Tackle Accommodated Type | FIBROUS ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 0.625 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR PATTERN |
| Tackle Block Quantity | 2 |
| Shell Length | 8.000 INCHES NOMINAL IN |
| Material | WOOD SHEAVE |
| 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 |
|---|---|
| 6139005-50 | Polytech Defense Spares Llc (USA) |
| 606437 PRIMARY | The Crosby Group Llc Dba the Crosby Group (USA) |
| Reference | Meaning |
|---|---|
| 606437 | 5/9 Secondary reference Crosby Group Inc the Mckissick Plant Div |
NSN 3940-01-283-2826 is a Block and Tackle, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-283-2826 has 2 manufacturer part numbers on file: 6139005-50 (Polytech Defense Spares Llc), 606437 (The Crosby Group Llc Dba the Crosby Group).
Key specifications for 606437: Maximum Tackle Diameter Accommodated: 1.500 INCHES IN; Load Rating: 1000.0 POUNDS MAXIMUM LBS; Tackle Nominal Length: 175.0 FEET FT; Sheave Outside Diameter: 4.500 INCHES NOMINAL IN. 11 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.