Key details
- Product type: 45 mm Swivel Block with Becket
- Options: Configuration
- Available variants: 2
Overview
Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
Specifications
Specifications vary by the selected variant. Use the variant table below to compare the available configurations and part numbers.
Variant details
Select the option combination that matches the required part number.
| Configuration | Part No. |
|---|---|
| Single | 3392 |
| Double | 3394 |
FAQs
Harken, Inc. holds the rights and restricts unauthorized use of this material.
The official part number is 3392/3392NP as listed in the drawing documentation.
The manufacturer is Harken, Inc., located at N15 W24983 Bluemound Road, Pewaukee, Wisconsin 53072.
Edges should be broken with a 0.010 max radius or chamfer, all burrs removed.
The address is N15 W24983 Bluemound Road, Pewaukee, Wisconsin 53072.
Sheet number listed for this product drawing is 1/1.
Design, drawing, engineering, and manufacturing approval were by MDS, CJL, and MKE.
All dimensions are prior to finishing unless otherwise specified.
The drawing specifies that ‘all dimensions prior to finishing’, and notes to ‘remove all burrs and break sharp edges with 0.010 max radius or chamfer.’
The surface finish is noted as ‘SURFACE FINISH: 120’.
Contact the SailRACE team — as certified marine experts we’re happy to help with product selection, installation and after-sales servicing, before and after your purchase.
