Harken

Harken 3405 1 Ton Twing Block

(No reviews yet) Write a Review
SKU:
20863888
MPN:
3405_92
Availability:
Usually ships the same or next business day. In stock at our FL, NJ warehouses.
Shipping:
Calculated at Checkout
Stock Update:
02/11/2026 06:21:09 PM PST
$251.95
Stock Update:
02/11/2026 06:21:09 PM PST

Description

This item is brand-new, factory sealed.

1 Ton Twing Block

The Twing block features a spring-loaded side opening mechanism for true one-handed rigging, even while wearing sailing gloves. Black anodized aluminum sideplates are edged with robust bumpers to protect the block, topsides, and deck. The sheave is aluminum rolling on a bearing system shared with Harken's existing 2.3T high-load snatch block. 

Features:

  • Side opening side plate - Easy to rig and remove from sheet
  • Spring loaded button release - Quick one-handed rigging
  • Anti-capsize bar - Keeps sheave aligned on sheet
  • ULC main bearing - Sheave turns smoothly under extreme loading
  • Sideload balls - Carry loads especially when the block is not aligned in light air
  • Thimble at pivot base - Use 1:1 or 2:1 up-down control
  • Machined aluminum inner sideplates - High strength, low weight
  • Soft polyurethane outer side plate bumpers - Protects block and deck

Uses:

  • Twing, tweaker control for code zero sheets
  • Can be used as a snatch block when combined with a soft shackle
  • Spinnaker sheet and guy control

Specifications:

  • Sheave Ø (mm): 38.5 mm
  • Sheave Ø (in): 1-1/2 in
  • Maximum line Ø (mm): 11 mm
  • Maximum line Ø (in): .43 in
  • Maximum working load (kg): 1000 kg
  • Maximum working load (lb): 2205 lb
  • Breaking load (kg): 2000 kg
  • Breaking load (lb): 4409 lb
View AllClose

Warranty Information

All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
View AllClose

0 Reviews

View AllClose
Main
Harken 3405 1 Ton Twing Block
$251.95