The Block,tackle, cataloged under National Stock Number 3940-00-263-3041, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-00-263-3041 |
| Primary Part Number | S1801-860466 |
| Item Name | Block,tackle |
| FSC / FSG | 3940 / 39 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | ACTIVE |
| Load Rating | 380.0 POUNDS MAXIMUM LBS |
| Material | COPPER ALLOY SHEAVE |
| Sheave Outside Diameter | 1.750 INCHES NOMINAL IN |
| Center Pin Diameter | 0.313 INCHES NOMINAL IN |
| Shell Length | 2.938 INCHES NOMINAL IN |
| Attachment Style | SISTER HOOKS |
| Antitoppling Device | NOT INCLUDED |
| Tackle Accommodated Type | FIBROUS ROPE |
| Maximum Tackle Diameter Accommodated | 0.312 INCHES IN |
| Tackle Locking Device | NOT INCLUDED |
| Block Type | REGULAR |
| Style Designator | HALYARD PATTERN |
| Material | STEEL CENTER PIN |
| Material | COPPER ALLOY SHELL |
| Material | STEEL BEARING |
| Sheave Quantity | 1 |
| Bearing Type | ROLLER |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| S1801-860466 PRIMARY | Naval Ship Systems Command (USA) |
| 1776 | Royson Engineering Company (USA) |
NSN 3940-00-263-3041 is a Block,tackle, manufactured by Naval Ship Systems Command, classified under FSC 3940 (No Item Name Available). Status: active.
NSN 3940-00-263-3041 has 2 cross-referenced part numbers: S1801-860466 (Naval Ship Systems Command), 1776 (Royson Engineering Company).
There are 12 known substitutes for 3940-00-263-3041: 4320-00-218-5941, 6810-00-366-7048, 9390-00-463-1536 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for S1801-860466: Load Rating: 380.0 POUNDS MAXIMUM LBS; Material: COPPER ALLOY SHEAVE; Sheave Outside Diameter: 1.750 INCHES NOMINAL IN; Center Pin Diameter: 0.313 INCHES NOMINAL IN. 17 total characteristics are documented in the Federal Logistics Information System.