The Block,tackle, cataloged under National Stock Number 3940-01-396-0308, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-01-396-0308 |
| Primary Part Number | E-566 8015212 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Sheave Bearing Lubrication Method | PRESSURE GREASE FITTING |
| Maximum Tackle Diameter Accommodated | 0.500 INCHES IN |
| Load Rating | 25200.0 POUNDS MAXIMUM LBS |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 13.000 INCHES NOMINAL IN |
| Tackle Accommodated Type | WIRE ROPE |
| Block Type | REGULAR |
| Style Designator | ROUND PATTERN |
| Bearing Type | ROLLER |
| Sheave Quantity | 1 |
| Material | STEEL SHELL |
| 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 |
|---|---|
| E-566 8015212 PRIMARY | The Crosby Group Llc Dba the Crosby Group (USA) |
| Reference | Meaning |
|---|---|
| 6695877 PIECE 1 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| E-566 8005206 | 3/9 Design control — primary reference The Crosby Group Llc Dba the Crosby Group |
NSN 3940-01-396-0308 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 3940-01-396-0308 has 1 manufacturer part number on file: E-566 8015212 (The Crosby Group Llc Dba the Crosby Group).
Key specifications for E-566 8015212: Sheave Bearing Lubrication Method: PRESSURE GREASE FITTING; Maximum Tackle Diameter Accommodated: 0.500 INCHES IN; Load Rating: 25200.0 POUNDS MAXIMUM LBS; Tackle Locking Device: NOT INCLUDED. 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.