Lewmar 72mm HTX Fiddle Block – Black | 29197231
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Lewmar 72mm HTX Fiddle Block – Black | 29197231
The Lewmar HTX 72mm Fiddle Block is a high-load sailing block built for demanding purchase systems where compact mechanical advantage and smooth operation under sustained load are both essential. The fiddle configuration stacks two sheaves in a slim vertical profile, making it well suited to boom vangs, backstay controls, and other high-load sail-control arrangements where space is limited but loads are significant.
The HTX range is built from high-quality materials with a straightforward, reliable construction: strong aluminum side cheeks, a central plain bearing optimized for high loads, and Delrin side-thrust ball bearings for smooth, consistent operation across the full load range.
Specifications
- Part Number: 29197231
- Sheave Diameter: 72 mm
- Configuration: Fiddle (double sheave, vertical)
- Maximum Line Diameter: 1/2" (12 mm) — see fitment note
- Working Load Limit: 4,405 lbs (2,000 kg)
- Breaking Load: 8,800 lbs (4,000 kg)
- Weight: 530 g (18.5 oz)
- Shackle Post: 16.5 mm
- Maximum Pin: 9.8 mm
- UPC: 743683204296
Features
- Fiddle configuration — compact vertical twin-sheave layout for high purchase in tight spaces
- Strong aluminum side cheeks for high-load durability
- Central plain bearing optimized for efficiency under high loads
- Delrin side-thrust ball bearings for smooth, consistent operation
- Adjustable swivel head with grub screw locking mechanism
- Black HTX finish — built for performance cruising and racing applications
Compatible Applications
- Boom vang and kicker purchase systems
- Backstay control and adjustment systems
- High-load sail-control arrangements using modern reduced-diameter running rigging
- Frequently adjusted, heavily loaded systems on performance cruisers and racing sailboats
- Applications requiring compact mechanical advantage with up to 1/2" (12 mm) line
Fitment Note
Although the broader 72mm HTX family is rated for line up to 14 mm (9/16"), the published specification for this fiddle configuration is a maximum of 12 mm (1/2"). Confirm your actual rope diameter before ordering — using a line larger than 12 mm in this block is not recommended.
Related Products
- Lewmar 72mm HTX Single Block – Black
- Lewmar 72mm HTX Double Block – Black
- Lewmar 72mm HTX Single Toggle Head Block – Black
- Lewmar 72mm HTX Footblock – Black
- Lewmar 72mm Synchro Fiddle Block with Becket & Cam – Black
Parts Desk Insights
Best use case: This block is the right choice for boom vang and backstay systems on performance cruisers and racers where you need high purchase in a compact, slim profile. The fiddle layout keeps the block short and manageable even in tight installations near the boom end or mast base.
The key detail to get right on this block is rope diameter. The fiddle-specific maximum is 12 mm (1/2") — not the 14 mm listed for the broader HTX family. If you’re running 14 mm line, you’ll need the standard 72mm HTX Double instead. Confirm the shackle post (16.5 mm) and pin (9.8 mm) dimensions against your attachment hardware before ordering.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.