The Block,tackle, cataloged under National Stock Number 3940-01-510-2503, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 17 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 | 3940-01-510-2503 |
| Primary Part Number | 5D3-02286 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Attachment Style | CLEWLINE EYE |
| Sheave Bearing Lubrication Method | PRESSURE GREASE FITTING |
| Maximum Tackle Diameter Accommodated | 0.062 INCHES IN |
| Tackle Locking Device | NOT INCLUDED |
| Sheave Outside Diameter | 8.500 INCHES NOMINAL IN |
| Tackle Accommodated Type | FIBROUS ROPE |
| Block Type | REGULAR |
| Center Pin Diameter | 1.750 INCHES NOMINAL IN |
| Style Designator | SQUARE PATTERN |
| Unpackaged Unit Weight | 32.000 POUNDS LBS |
| Shell Length | 9.000 INCHES NOMINAL IN |
| Bearing Type | ROLLER |
| Sheave Quantity | 1 |
| Material | STEEL SHELL |
| Material | STEEL CENTER PIN |
| Material | PLASTIC SHEAVE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 5D3-02286 PRIMARY | Lake Shore Systems, Inc. (USA) |
| 2D5-07736 ITEM 3 | Lake Shore Systems, Inc. (USA) |
NSN 3940-01-510-2503 is a Block,tackle, manufactured by Lake Shore Systems, Inc., classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-510-2503 has 2 manufacturer part numbers on file: 5D3-02286 (Lake Shore Systems, Inc.), 2D5-07736 ITEM 3 (Lake Shore Systems, Inc.).
Key specifications for 5D3-02286: Attachment Style: CLEWLINE EYE; Sheave Bearing Lubrication Method: PRESSURE GREASE FITTING; Maximum Tackle Diameter Accommodated: 0.062 INCHES IN; Tackle Locking Device: NOT INCLUDED. 17 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.