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Special order from Ronstan — Estimated 2–4 weeks.
Description
Series 40 All Purpose Block - Single - Loop Top
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.
Features:
Applications:
Materials:
Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
Pin Ø: 5mm(3/16")
M.W.L.: 400kg(880lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 54g(1.9oz)
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.
Features:
- Exceptionally high working loads
- Low maintenance, long service life
- Self-lubricating sheave
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 Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
Pin Ø: 5mm(3/16")
M.W.L.: 400kg(880lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 54g(1.9oz)
Accessories
No accessories listed for this product.
Specifications
| SKU | RF41101 |
| UPC | 9316800243556 |
| Brand | Ronstan |
| Category | Sailing |
| Country of Origin | ID |
| Weight | 0.1 |
| Dimensions | 4 x 3 x 1 |
| Status | Active |
| Last Synced | 10/12/2026, 2:06:16 AM |
Compliance & Shipping
Returnable
Product Literature
No literature or manuals available for this product.
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Frequently Bought Together
Compare Key Features
| Feature |  Ronstan Series 40 All Purpose Block - Single - Loop Top CURRENT |  Harken 57mm Carbo Air Block w/Swivel |  Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket |  Barton Marine Ratchet Block - 55mm |  Harken 40mm Carbo Block 90° Fixed Head |
|---|---|---|---|---|---|
| Price | $20.91 | $53.93 | $57.81 | $111.66 | $41.35 |
| Brand | Ronstan | Harken | Ronstan | Barton Marine | Harken |
| Condition | New | New | New | New | New |
| Availability | Out of Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 0.1 | 0.3 | 0.19 | 0.3 | 0.11 |
| Dimensions | 4 x 3 x 1 | 6 x 3 x 1 | 4 x 2 x 2 | 6 x 3 x 2 | 5 x 3 x 1 |
| SKU | RF41101 | 2600 | RF35312 | 90500 | 2659 |
| Country | ID | UNITED STATES | INDONESIA | — | UNITED STATES |
| View Item | View Item | View Item | View Item | View Item |
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Frequently Asked Questions
Price
$20.91