The Block,tackle, cataloged under National Stock Number 3940-00-227-5520, is classified within Federal Supply Class 3940 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-00-227-5520 |
| Primary Part Number | S1801-860441PC1-2-9T011-14-16-1 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | ACTIVE |
| Material | COPPER ALLOY BEARING |
| Material | STEEL SHELL |
| Material | STEEL SHEAVE |
| Surface Treatment | ZINC OVERALL |
| Center Pin Diameter | 0.625 INCHES NOMINAL IN |
| Sheave Outside Diameter | 5.500 INCHES NOMINAL IN |
| Tackle Locking Device | NOT INCLUDED |
| Tackle Accommodated Type | FIBROUS ROPE |
| Sheave Bearing Lubrication Method | SELF-LUBRICATED |
| Attachment Style | UPSET SCREW PIN ANCHOR SHACKLE |
| Sheave Quantity | 3 |
| Shell Length | 8.000 INCHES NOMINAL IN |
| Maximum Tackle Diameter Accommodated | 1.000 INCHES IN |
| Block Type | REGULAR |
| Antitoppling Device | NOT INCLUDED |
| Load Rating | 7050.0 POUNDS MAXIMUM LBS |
| Material | STEEL CENTER PIN |
| Bearing Type | PLAIN |
| Style Designator | OVAL PATTERN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY ELP NUMBER SIZE 8 IN.,RIG N0 2 IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| S1801-860441PC1-2-9T011-14-16-1 | Naval Ship Systems Command (USA) |
NSN 3940-00-227-5520 is a Block,tackle, manufactured by Naval Ship Systems Command, classified under FSC 3940 (No Item Name Available). Status: active.
NSN 3940-00-227-5520 has 1 cross-referenced part number: S1801-860441PC1-2-9T011-14-16-1 (Naval Ship Systems Command).
There are 2 known substitutes for 3940-00-227-5520: 3940-00-227-5519, 3940-00-227-5521. Verify interchangeability with system specifications before substitution.
Key specifications for S1801-860441PC1-2-9T011-14-16-1: Material: COPPER ALLOY BEARING; Material: STEEL SHELL; Material: STEEL SHEAVE; Surface Treatment: ZINC OVERALL. 20 total characteristics are documented in the Federal Logistics Information System.