The Block,tackle, cataloged under National Stock Number 3940-01-652-4305, 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 8 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-01-652-4305 |
| Primary Part Number | 682639 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Becket Type | SHACKLE |
| Maximum Tackle Diameter Accommodated | 0.500 INCHES IN |
| Load Rating | 1100.000 POUNDS MAXIMUM LBS |
| Sheave Outside Diameter | 2.250 INCHES NOMINAL IN |
| Tackle Accommodated Type | FIBROUS ROPE |
| Block Type | REGULAR |
| Style Designator | DIAMOND PATTERN |
| Sheave Quantity | 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3940-01-652-4305 is a Block,tackle, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-652-4305 has 4 manufacturer part numbers on file: 7230433 (Joslyn Corp), 3031F 4IN (Joslyn Corp), 02069008 (Bath Iron Works Corporation), 682639 (The Crosby Group Llc Dba the Crosby Group).
Key specifications for 682639: Becket Type: SHACKLE; Maximum Tackle Diameter Accommodated: 0.500 INCHES IN; Load Rating: 1100.000 POUNDS MAXIMUM LBS; Sheave Outside Diameter: 2.250 INCHES NOMINAL IN. 8 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.