The Block,tackle, cataloged under National Stock Number 3940-01-371-4270, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is Lebus International, Inc.. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-01-371-4270 |
| Primary Part Number | L-45-H AND SS4055 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Lebus International, Inc. |
| Status | ACTIVE |
| Sheave Outside Diameter | 4.125 INCHES NOMINAL IN |
| Tackle Accommodated Type | WIRE ROPE |
| Block Type | SNATCH |
| Center Pin Diameter | 1.000 INCHES NOMINAL IN |
| Style Designator | OVAL PATTERN |
| Locking Style | SAFETY LOCKING |
| Shell Length | 4.500 INCHES NOMINAL IN |
| Bearing Type | ROLLER |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 599819 | Mennens Amsterdam B.v. (NLD) |
| L-45-H AND SS4055 PRIMARY | Lebus International, Inc. (USA) |
NSN 3940-01-371-4270 is a Block,tackle, manufactured by Lebus International, Inc., classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-371-4270 has 2 manufacturer part numbers on file: 599819 (Mennens Amsterdam B.v.), L-45-H AND SS4055 (Lebus International, Inc.).
Key specifications for L-45-H AND SS4055: Sheave Outside Diameter: 4.125 INCHES NOMINAL IN; Tackle Accommodated Type: WIRE ROPE; Block Type: SNATCH; Center Pin Diameter: 1.000 INCHES NOMINAL IN. 9 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.