Product Overview

European Type Closed Body Turnbuckle (Jaw & Jaw) – Model ZB6804 Series
RICHWITS ZB6804 gives you a precision-machined, salt-proof tensioner that tightens shade sails, guard rails and rigging cables without exposed threads.
Investment-cast from 316 marine stainless (304 on request), then CNC-turned and mirror-polished for lifetime immunity to salt-spray, humidity and UV exposure.
Closed tubular body protects threads from debris; jaw-and-jaw ends accept clevis pins or shackles for 180° articulation.
Nine sizes (M4–M20) deliver working-load limits from 200 kgf to 3 000 kgf—perfect for architectural cables, yacht rigging, agricultural shading or industrial tensioning.

Dimension & Working Loads

Key Features & Benefits

1. 316/304 SS Closed Tubular Body – threads protected from sand, salt and debris; 316 standard for marine.

2. Jaw & Jaw Articulation – 180° rotation at both ends; accepts clevis pins or shackles.

3. CNC-Machined Acme Threads – fast take-up (57–155 mm); 25 N·m torque for max tension.

4. Mirror-Polished Finish – salt rinses off; no pitting or tea staining.

5. Hex Central Body (M) – wrench or spanner adjust; no special tools.

6. Safety Lock Nuts Included – jam nuts prevent loosening under vibration.

7. Factory-Direct Price – 35 % cheaper than forged turnbuckles; MOQ 100 pcs.

Usage Scenarios

• Shade Sails & Awnings – M6–M10 rated 350–1 000 kgf; clean look for commercial installations.

• Stainless Balustrades – M4–M6 rated 200–350 kgf; concealed tensioner for wire systems.

• Yacht Rigging & Lifelines – M8–M12 rated 700–1 500 kgf; 316 SS resists saltwater.

• Agricultural & Industrial – M14–M20 rated 1 600–3 000 kgf; greenhouses, fencing, machinery.

Certifications / Testing

• Proof-loaded to 2 × WLL (400–6 000 kgf)

• Salt-spray 720 h (316) / 480 h (304) per ASTM B117

• Passivated per ASTM A967

Why Choose RICHWITS

• Factory-Direct – wholesale only, 35 % cost saving vs. forged equivalents.

• In-Stock – 150 000 pcs ready, MOQ 100 pcs, 48 h dispatch.

• Fast Logistics – FedEx/UPS/DHL global 3-7 day delivery.

• OEM/ODM – custom thread, logo or finish within 2 weeks.

• Test Certificates – mill cert, salt-spray, proof-load report supplied free.

FAQ

Q1: Will 316 SS really never rust?
A1: Correct—2-3 % Mo gives lifetime immunity to chlorides; polish yearly to keep the mirror shine.

Q2: What safe working load (SWL)?
A2: From 200 kgf (M4) to 3 000 kgf (M20); divide cable load by safety factor 4:1.

Q3: Can I use the M8 for shade sails?
A3: Yes—700 kgf rating; typical 5×5 m sail load gives > 4:1 safety; 75 mm take-up handles stretch.

Q4: Will the body loosen under vibration?
A4: No—safety lock nuts included; tested 24 h vibration 50–500 Hz, zero loosening.

Q5: Are spare 304 versions available?
A5: Yes—304 option on request, MOQ 100 pcs, 15 % price discount.

Q6: Do you offer test certificates?
A6: Mill certificate for 316/304 SS, salt-spray report, and proof-load certificate supplied free on request.

Packaging & Delivery

Exhibition