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Series 40 All-Purpose Fiddle Block


Model # 271663 | Mfg # RF41500
In stock online.

Series 40 All-Purpose Fiddle Block. Ronstan's 40mm plain bearing blocks are strong and compact. Smart features include a unique captive lock universal head. For dinghies and keelboats up to 26'. 1 9/16" (40mm) sheave is made from UV-stabilized acetal and accepts a line size of 5/16" (8mm). Cheek is made from stainless steel and fiber-reinforced textured Zytel.

Series 40 All-Purpose Fiddle Block

Ball Bearings Plain Bearings
Becket No Becket
Diameter 5/16 Inch or 8 mm
Direction Any
Integral Cleat No Integral Cleat
Mount Type Swivel Shackle
Ratchet Non Ratcheting
Safe Working Load 882 Pounds
Sheave Diameter 40 mm
Type Single Fiddle
Weight 3.2 Ounces

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by PowerReviews
Ronstan Series 40 All-Purpose Fiddle Block

(based on 1 review)

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Reviewed by 1 customer

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(0 of 1 customers found this review helpful)


Suitable for the job

By Fore"cast"

from Kerr Lake, OK

About Me Beginner

Verified Buyer


  • Easy To Install
  • Quality Construction


    Best Uses

    • Sailing

    Comments about Ronstan Series 40 All-Purpose Fiddle Block:

    Actually bought the wrong size, so can't comment at this time.

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