The Block,tackle, cataloged under National Stock Number 3940-01-373-2734, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 3940-01-373-2734 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Status | ACTIVE |
| Attachment Style | OBLONG SWIVEL EYE AND SHACKLE |
| Maximum Tackle Diameter Accommodated | 1.938 INCHES IN |
| Load Rating | 15000.0 POUNDS MAXIMUM LBS |
| Tackle Locking Device | INCLUDED |
| Sheave Outside Diameter | 8.000 INCHES MINIMUM IN |
| Tackle Accommodated Type | FIBROUS ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 1.000 INCHES MINIMUM IN |
| Style Designator | HALF-OVAL PATTERN |
| Nondefinitive Spec/std Data | 3 TYPE AND 1 CLASS AND 12 SIZE |
| Shell Length | 12.000 INCHES MINIMUM IN |
| Bearing Type | PLAIN |
| Surface Treatment | ZINC SHEAVE |
| Sheave Quantity | 2 |
| Material | STEEL SHEAVE |
| Material | WOOD SHELL |
| Material | STEEL 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 |
|---|---|
| MILB24220TYIIIC L1SZ12RIG25 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| MIL-B-24220 | 4/1 Identification reference U.S. Government activity |
NSN 3940-01-373-2734 is a Block,tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
7 possible matches (shared part number, not a government interchangeability claim): 3940-01-373-2735, 3940-01-373-2736, 3940-01-373-2737. Verify interchangeability with system specifications before substitution.
Key specifications for 3940-01-373-2734: Attachment Style: OBLONG SWIVEL EYE AND SHACKLE; Maximum Tackle Diameter Accommodated: 1.938 INCHES IN; Load Rating: 15000.0 POUNDS MAXIMUM LBS; Tackle Locking Device: INCLUDED. 18 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.