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Ronstan Series 40 AP Block, Single Cheek

Note: Some prices may reflect updates due to international tariffs. Learn the latest about tariffs

Tariff Updates

We are observing how the tariffs are behaving. Lots of our products are imported from Europe and some of the manufacturers are not providing heads up about price increases. We will do everything in our power to hold the best prices, but please consider that in these uncertain times we may be forced to increase the prices without previous notification.

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What does this mean for you?

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How we’re handling it:

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Updated: April 2025

MSRP: $39.68
$33.73
(You save $5.95 )
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SKU:
RONRF41151
UPC:
9316800244331
Availability:
Y
Weight:
0.50 LBS
Shipping:
Calculated at Checkout.
Type:
Single
Size:
40 mm
Manufacturer part #: RF41151 1

Technical Description
Series 40 AP Single Cheek Block
1 9/16 in
40 mm
7/16 in
10 mm
880 lb
400 kg
2200 lb
1000 kg
2.3 oz
66 g
Manufacturer part #: RF41151Ronstan Series 40 All Purpose Blocks

  • Exceptionally high working loads
  • Low maintenance, long service life
  • Self-lubricating sheave
  • Mount with 3 x 5 mm (3/16") fasteners (not supplied)

  • 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.

    Can be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave.

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

  • Materials
  • U.V. stabilised Acetal sheaves
  • Impact and U.V. resistant, fibre reinforced Nylon cheeks
  • Grade 316 stainless steel bearing race
  • Grade 316 stainless steel load strap and head fitting
  • Impact and UV resistant, fibre reinforced Nylon cheeks