Description
Overview
BLA Open-Body Eye & Eye Turnbuckle M4 is a compact 316 stainless rigging screw for accurate tensioning of wire and rope on small craft. The open body lets you see thread engagement at a glance, while welded eye ends give a secure connection. It suits light stay, lifeline and general-purpose rigging where corrosion resistance matters.
Features
• Eye and eye configuration for universal connection with shackles or thimbles.
• Open-body design for quick visual inspection and easy cleaning.
• Marine grade 316 stainless construction for excellent corrosion resistance.
• Manufacturer-rated breaking load 475kg with 100–145mm adjustment range.
Specifications and Materials
• Thread: M4
• Adjustment (A): 100–145mm
• Eye diameter (B): 8mm
• Breaking load: 475kg
• Material: 316 stainless steel; body cast stainless, eyes rolled and welded
• Approx. weight: 0.05kg (estimate based on dimensions and stainless density, comparable to similar M4 units).
For the full manufacturer specification, refer to BLA Open Body Turnbuckles – Stainless Steel Eye and Eye for more details.
Compatibility and Fitment
This M4 eye & eye turnbuckle fits typical 3–4mm wire or small shackles used on dinghies, tenders and light fittings. Confirm take-up (100–145mm) against your installation. The part number 163050 identifies this exact M4 variant in the BLA range.
Compliance and Safety
Turnbuckles are for tensioning only and are not rated for lifting. Always leave adequate thread engagement on both ends and recheck after load is applied. Because salt environments accelerate wear, rinse with fresh water and inspect threads and eyes routinely.
Marine Applications
Use on lifelines, guard rails, small stays, biminis and light architectural lashing. The BLA Open-Body Eye & Eye Turnbuckle M4 is ideal where you need fine adjustment with reliable stainless performance. Additionally, the open body helps prevent salt and debris build-up, which reduces maintenance effort.
Why Choose Argomarine
We curate proven marine hardware and publish clear, verified specs so you can match parts with confidence. Orders are packed carefully for transit, and our team understands practical rigging choices for Australian conditions. If you need a different size, we can help you select from the same BLA series quickly.
Browse more stainless steel turnbuckles and related rigging hardware in our Hull Accessories category.
