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Ronstan RF41100 Series 40 All-Purpose Single Block with Shackle Head

Manufacturer

Ronstan

Picture for manufacturer Ronstan

Part Number

RF41100
14 reviews
03/12/2036 1:55 AM
Sale Price

$18.63

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Ronstan Series 40 All-Purpose Block delivers smooth, efficient performance for dinghy and small keelboat sailors who need precise feedback from handheld control lines. This 40mm single block with shackle head provides the responsiveness necessary to detect subtle wind changes and sail as efficiently as possible.

Key Features:

  • Self-lubricating, UV-stable acetal sheave runs smoothly on a Grade 316 stainless steel shaft for low friction under high loads
  • Fiber-reinforced nylon cheeks with 316 stainless steel load straps provide rigidity and strength while minimizing weight
  • Captive lock secures swivel at 0° or 90° or allows free rotation for versatile positioning
  • Screw pin shackle with low-profile head prevents snagging on smaller lines
  • Designed for moderate to high static and dynamic loads
  • 40mm sheave diameter provides optimal balance of size and performance

Ideal Applications: Halyard tuners, Cunninghams, dinghy sheets, small keelboat sheets, backstay systems, boom vangs in cascade systems, and other control line applications where feedback and efficiency are critical.

Built for durability and performance, this versatile block delivers the smooth operation and reliability that Ronstan marine hardware is known for in sailing applications worldwide.

Products specifications

Type

Single

Diameter

7/16 Inch or 11 mm

Mount Type

Swivel Shackle

Ball Bearings

Plain Bearings

Becket

No Becket

Direction

Any

Integral Cleat

No Integral Cleat

Ratchet

Non Ratcheting

Safe Working Load

882 Pounds

Sheave Diameter

40 mm

Easy internet access. fast shipping. justlike the advertise.

Great company to do business with. Excellent prices and fair shipping rates. I will certainly buy from them in the future.

fine so far

fast and good price

Great pricing, free shipping, and great product!!! What we got was better than OE for 1/5 the price! Thank you!

emailed you yesterday and received a response shortly afterword.

Good Seller, very quick shipping and excellent transaction.

Easy to find and price was good. The product fit well. Works well so far

quick and easy shopping

kinda delayed on the payment confirmation but overall it was short and to the point. no login information needed or ads.

Easy to deal with about shipping questions, great prices, and friendly customer service. One of the few places who says "I'll return you call" and actually does. Thanks...

thanks

This was my first order from Autoplicity, and I was not sure what to expect. The parts were shipped quickly, and Autoplicity had the best price by far.

This was my second order with Autoplicity. The first order I had to call to get an update, but just happens the part was out for delivery the day I had called. This second order went without a hitch! In both cases, shipping was fast and the products delivered at great prices, not to mention some of the best prices on shipping. I will definitely look here for my future parts needs!!

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