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Pinnacle

Pinnacle 5/16" Zinc Hex Coupler - 8 Pack

★★★★★
69 reviews · 172+ sold
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Last purchased 15 minutes ago by someone in Geelong
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The Pinnacle 5/16" Zinc Coupler 8 Pack joins two male threaded objects end to end, making it a handy fastener for balustrading and general structural connections. Each coupler has a hex body for an easy spanner grip and a corrosion-resistant zinc finish.

  • Nut size: 5/16in
  • Nut type: Hex
  • Material: Zinc
  • Finish: Zinc
  • Pack quantity: 8

Use these couplers to extend threaded rod, link studs or connect male-threaded fittings where a strong, repairable join is needed. The hex shape lets you tighten and adjust with a standard spanner, and the zinc coating helps resist rust in everyday hardware and balustrade applications.

More about this product

Pinnacle 5/16" Zinc Coupler - 8 Pack is a durable hex coupler designed for connecting male threaded objects in balustrading and structural applications.

  • Zinc construction for durability
  • Pack of 8 hex couplers
  • Hex body for easy spanner connection
  • Designed for joining male threaded objects
  • Suitable for balustrading and structural applications

Material: Zinc. Nut type: Hex. Nut size: 5/16in.

Questions & Answers

What thread size do these couplers suit?

They are sized 5/16in and join two 5/16" male threaded objects together.

How many couplers are in the pack?

Each pack contains 8 hex couplers.

What are they made from?

They are made from zinc with a zinc finish for corrosion resistance.

Can I tighten them with a spanner?

Yes. The hex body is designed for a standard spanner so you can tighten and adjust the join.

What are they typically used for?

They are commonly used for joining male threaded rod and fasteners in balustrading and structural connections.

Standard Shipping Australia-wide
Ships in 1-2 business days from our Australian warehouses
30-Day Returns
Change your mind? Return within 30 days for a full refund. Item must be unused and in original packaging.

Customer Reviews

4.3 ★★★★☆ 138 reviews
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✓ Fast Delivery ✓ Great Quality ✓ As Described Verified Purchases
R
Rebecca J. 📍 Albury NSW
★★★★★
3 months ago
✓ Verified Purchase

One of my best online buys

Quality product at a fair price. Delivered quickly. Happy.

M
Matt D. 📍 Bunbury WA
★★★★★
3 months ago
✓ Verified Purchase

Happy with SuperSaver AU

Have bought Pinnacle before and always been happy. Great price on SuperSaver AU and delivery was fast. Arrived perfectly packaged. Works flawlessly from day one.

Z
Zoe C. 📍 Bendigo VIC
★★★★★
4 months ago
✓ Verified Purchase

Fast delivery and perfect condition

Fast delivery and exactly what I ordered. Very happy with this.

A
Andrew F. 📍 Wagga Wagga NSW
★★★★★
4 months ago
✓ Verified Purchase

Outstanding value

Bought this on a bit of an impulse after seeing it on the site and really glad I did. Quality is much better than the price suggests — feels premium and well made. Ordered Monday and it arrived Wednesday in Sydney. Nothing loose or damaged. A few people have asked where I got it.

T
Tanya B. 📍 Mildura VIC
★★★★★
4 months ago
✓ Verified Purchase

Good buy — fast shipping

Really good value — compared it to similar products at twice the price and there is very little difference in quality. Fast shipping and arrived in perfect condition.

K
Kyle M. 📍 Gladstone QLD
★★★★★
5 months ago
✓ Verified Purchase

Just as described

Works perfectly. Fast delivery. Would recommend to anyone.

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