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Description
Series 50 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:
Applications:
Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10M(33')
Materials:
Specifications:
Sheave Ø: 50mm(2")
Max. Rope Ø: 12mm(1/2")
Max. Pin Ø: 5mm(3/16")
M.W.L.: 750kg(1,650lbs)
B. L.: 1,500kg(3,310lbs)
Weight: 118g(4.1oz)
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 and halyard applications, vang and spinnaker control lines on boats to 10M(33')
Materials:
- Nylatron® sheave
- Grade 316 stainless steel load strap and head fitting
- Impact and U.V. resistant, fiber reinforced Nylon cheeks
Specifications:
Sheave Ø: 50mm(2")
Max. Rope Ø: 12mm(1/2")
Max. Pin Ø: 5mm(3/16")
M.W.L.: 750kg(1,650lbs)
B. L.: 1,500kg(3,310lbs)
Weight: 118g(4.1oz)
Accessories
No accessories listed for this product.
Specifications
| SKU | RF51100 |
| UPC | 9316800241101 |
| Brand | Ronstan |
| Category | Sailing |
| Country of Origin | AUSTRALIA |
| Weight | 0.27 |
| Dimensions | 5 x 3 x 1 |
| Status | Active |
| Last Synced | 10/9/2026, 2:06:48 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 50 All Purpose Block - Single - Universal Head CURRENT |  Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket |  Harken 57mm Carbo Air Block w/Swivel |  Barton Marine Ratchet Block - 55mm |  Harken 40mm Carbo Block 90° Fixed Head |
|---|---|---|---|---|---|
| Price | $36.52 | $57.81 | $53.93 | $111.66 | $41.35 |
| Brand | Ronstan | Ronstan | Harken | Barton Marine | Harken |
| Condition | New | New | New | New | New |
| Availability | In Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 0.27 | 0.19 | 0.3 | 0.3 | 0.11 |
| Dimensions | 5 x 3 x 1 | 4 x 2 x 2 | 6 x 3 x 1 | 6 x 3 x 2 | 5 x 3 x 1 |
| SKU | RF51100 | RF35312 | 2600 | 90500 | 2659 |
| Country | AUSTRALIA | INDONESIA | UNITED STATES | — | UNITED STATES |
| View Item | View Item | View Item | View Item | View Item |
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Frequently Asked Questions
Price
$36.52