5 Series Utility Block/Mast Collar Delrin 505-20


505-20 fits Isomat mast collar with a pin diameter of .510". Stainless steel cheeks and Delrin(tm) sheave ensure smooth operation and high safe working load. Sheave Dia. 2" (51 mm), Max Line 7/16" (11 mm), Pin dia. .510 Hole, L 3-3/32" (79 mm), W 2-1/8" (54 mm), T 13/16" (21 mm), SWL 1750 lbs (795 kg), Weight 7.1 oz (201 g)

Schaefer Marine, Inc. warrants its standard catalog products to be free from factory defects in material and workmanship for a period of ten (10) years from the date of purchase, unless otherwise stated in this catalog or any other Schaefer Marine catalog. * Furling, Tuff Luff, and Windlass products have shorter warranties and are shown per product.

We offer free shipping on orders over $100. All other orders are shipped via UPS. For orders outside of the U.S., contact our sales team for custom quote: sales@schaefermarine.com

Fitting products to your boat is not one size fits all, feel free to reach out to our team for assistance at 508-995-9511 or sales@schaefermarine.com