Reference A20401SR
A20401SR - DYNAMIC single fixed block - Ø40mm - Detachable - SWL=240kg
A20401SR – 40mm Dynamic Single Block with Removable Ultra-Strap | High-Performance Block for Keelboats & Dinghies
The A20401SR 40mm Dynamic Single Block with Removable Ultra-Strap is built from high-strength, lightweight glass-loaded nylon and combines Allen's renowned dynamic bearing technology to deliver a high-performance block perfectly suited for keelboats and dinghies.
Ideal for use on main, jib and spinnaker sheets on dinghies, as well as keelboat control lines, the A20401SR is a particularly strong choice for dinghy jib and mainsheet systems, with the added convenience of a fully removable Ultra-Strap for quick and easy fitting.
Patented Bearing System – Dynamic Block Technology Dynamic Blocks feature an exclusive patented bearing system using twin rows of stainless-steel ball bearings running on a stainless-steel rail. The ball bearings are caged for further friction reduction, delivering superior load-carrying capacity and outstanding longevity compared to conventional bearing systems on the market.
Removable Ultra-Strap – Stronger, More Durable & Rope-Friendly The patented Ultra-Strap is used across Allen's 20, 30 and 40mm Dynamic block range. Its unique coining process strengthens the strap for increased reliability and durability, while also making it rope-friendly to protect your lines during use. The strap is secured with a bolt and nut and can be easily removed for quick and hassle-free fitting and replacement.
Becket – Versatile Tie-Off Point The 40mm range features a large central hole that can be used as a becket tie-off point for added versatility
Data sheet
Specific References
A20401SR - DYNAMIC single fixed block - Ø40mm - Detachable - SWL=240kg
A20401 - DYNAMIC single swivel block - Ø40mm - 4mm shackle - SWL=225kg
A20403-77 - DYNAMIC triple swivel block - Ø40mm - With A0077 clamp - 5mm shackle - SWL=675kg
A20404 - DYNAMIC quadruple swivel block - Ø40mm - 5mm shackle - SWL=900kg
A20401FHK-77 - DYNAMIC swivel block - Ø40mm - With A0077 clamp - With hook - SWL=225kg
A20401F-77 - DYNAMIC swivel block - Ø40mm - With A0077 clamp - 4mm shackle - SWL=225kg
A2043 - DYNAMIC triple block - Sheave Ø 40mm with becket - MWL=180kg
A20402 - DYNAMIC double swivel block - Ø40mm - 5mm shackle - SWL=450kg
A20401SLZ - DYNAMIC single fixed block - Ø40mm - on shackle and spbecket - SWL=225kg
A20401HL - 40mm Allen block with swivel head - 4mm shackle - MWL=360 - Ørope 10mm
A20401BF - DYNAMIC fiddle block with swivel and becket - Ø40mm - 4mm shackle - SWL=225kg
A20403B-77 - DYNAMIC triple swivel block - Ø40mm - With A0077 clamp - 5mm shackle - SWL=675kg
A20401BF-77 - DYNAMIC fiddle block with swivel becket - Ø40mm - With A007 clamp - 4mm shackle - SWL=225kg
A20401B-77 - DYNAMIC single block with swivel and becket - Ø40mm - With A007 clamp - 4mm shackle - SWL=225kg
A2040LZ - DYNAMIC single block - 40mm diameter with strap-on head and spring - MWL=180kg
A2042 - DYNAMIC double block - Sheave Ø 40mm - MWL=320kg (While stocks last)