The Block,tackle, cataloged under National Stock Number 3940-01-351-3906, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-01-351-3906 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Status | ACTIVE |
| Attachment Style | DRILLED SWIVEL EYE AND SHACKLE |
| Tackle Accommodated Type | WIRE ROPE |
| Block Type | REGULAR |
| Style Designator | HOISTER PATTERN |
| Shell Length | 20.880 INCHES NOMINAL IN |
| Bearing Type | ROLLER |
| 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 |
|---|---|
| 8911-247-08 | 3/1 Design control — primary reference Crosby Group Inc the Mckissick Plant Div |
| 6609837ITEM38 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 6609837 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3940-01-351-3906 is a Block,tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 3940-01-351-3907, 3940-01-351-3908, 3940-01-351-3909. Verify interchangeability with system specifications before substitution.
Key specifications for 3940-01-351-3906: Attachment Style: DRILLED SWIVEL EYE AND SHACKLE; Tackle Accommodated Type: WIRE ROPE; Block Type: REGULAR; Style Designator: HOISTER PATTERN. 6 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.