Ronstan Series 40 All Purpose Single Block with Universal Head - Durable Marine Hardware

Series 40 All Purpose Block - Single - Universal Head

All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Captive Lock universal head can be fixed in either of two planes, or free to swivel as required.

Features:

• Exceptionally high working loads
  
• Low maintenance, long service life
  
• Self-lubricating sheave
  
• Captive Lock universal head
  
• Slotted pin shackle eliminates fouled lines

Applications:

• Mainsheet
  
• Halyard
  
• Vang
  
• Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')

Materials:

• U.V. stabilized Acetal sheaves
  
• Impact and U.V. resistant, fiber reinforced Nylon cheeks
  
• Grade 316 stainless steel bearing race
  
• Grade 316 stainless steel load strap and head fitting

Specifications:
Sheave : 40mm(1-9/16")
Max. Rope : 10mm(7/16")
Pin : 5mm(3/16")
M.W.L.: 400kg(880lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 71g(2.5oz)

The Ronstan Series 40 All Purpose Block with Universal Head is an versatile and reliable solution designed for a wide range of sailing applications. Crafted with self-lubricating Acetal polymer sheaves that run smoothly on polished stainless steel races, this block is built to handle both dynamic and static loads with ease. Its robust construction makes it ideal for controlling sheets, halyards, and other lines on cruising and racing boats up to 26 feet in length. The captive Lock universal head allows for adjustable positioning, either fixed in two planes or free to swivel, providing flexibility for various rigging setups. Whether used for mainsheets, halyards, vangs, or spinnaker control lines, this block offers high performance and durability in demanding marine environments. It features a 40mm sheave diameter capable of accommodating ropes up to 7/16 inch thick, with a maximum working load of 880 pounds and a breaking load of 2,200 pounds. The lightweight design, weighing only 2.5 ounces, ensures minimal added mass to your rigging while maintaining strength and reliability. Constructed from impact and UV resistant materials, including fiber-reinforced nylon cheeks and Grade 316 stainless steel components, the Ronstan Series 40 block is designed for long-term service and low maintenance. Its slotted pin shackle prevents fouling lines, simplifying installation and operation, making it an excellent choice for both racing enthusiasts and casual sailors seeking dependable hardware. Overall, this all-purpose block combines innovative features, high load capacity, and corrosion-resistant materials to enhance your boat's performance and reliability. Whether upgrading existing rigging or outfitting a new vessel, the Ronstan Series 40 All Purpose Block provides a trusted solution for demanding sailing conditions.

Features:

• Self-lubricating Acetal polymer sheaves for smooth operation

• Captive Lock universal head allows flexible positioning

• High working load capacity for demanding applications

• Low maintenance design ensures long service life

• Slotted pin shackle prevents fouling lines

• Impact and UV resistant nylon cheeks for durability

• Grade 316 stainless steel bearing race, load strap, and head fitting for corrosion resistance

• Suitable for sheets, halyards, vangs, and spinnaker control lines on boats up to 26 feet