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Zenith

Zenith M16 x 300mm Hot Dip Galvanised Cup Head Bolt & Nut - Each

★★★★★
117 reviews · 300+ sold
$14.95 $22.42 -33% OFF
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Last purchased 16 minutes ago by someone in Canberra
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The Zenith M16 x 300mm hot dip galvanised cup head bolt and nut is sold individually for heavy, deep timber fastening that needs a flush finish. The low-profile cup head sits neatly against the surface and the square neck under the head stops the bolt spinning as you tighten the nut.

  • Bolt size: M16 x 300mm
  • Head type: Cup head
  • Material: 4.6 grade steel
  • Finish: Hot dipped galvanised
  • Colour: Grey
  • Pack: Each (one bolt and one nut)

At 300mm the heavy M16 cup head bolt suits deep timber connections such as sleepers, retaining walls and structural posts, where the hot dipped galvanised coating resists rust. A matching hex nut is included.

More about this product

Zenith M16 x 300mm Hot Dip Galvanised Cup Head Bolt and Nut (Each) is designed for robust fastening applications, featuring a low profile cup head for a flush finish.

  • Low profile cup head for a flush finish
  • Square neck limits bolt spinning during installation
  • Coarse thread for maximum grip strength
  • Hexagonal nut included
  • Hot dip galvanised finish for rust and corrosion resistance

Bolt size M16 x 300mm. Material 4.6 grade steel. Colour grey. Sold each.

Questions & Answers

What size is this bolt?

It is an M16 cup head bolt, 300mm long, supplied with one matching hex nut.

What is a cup head bolt?

It has a smooth, rounded low-profile head with a square neck beneath that grips the timber to stop the bolt spinning while you tighten the nut.

Is it sold singly or in a pack?

It is sold each, as a single bolt and nut.

Why hot dip galvanised?

The thick zinc coating resists rust, suiting outdoor and exposed timber work.

What is it used for?

The long, heavy bolt suits deep timber connections such as sleepers, retaining walls and structural posts.

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 ★★★★☆ 121 reviews
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✓ Fast Delivery ✓ Great Quality ✓ As Described Verified Purchases
J
Jessica L. 📍 Toowoomba QLD
★★★★★
2 months ago
✓ Verified Purchase

Already bought a second one

Placed the order in the evening and got a shipping notification the next morning. Arrived 2 days later in great condition. Product is well made and does everything it should. Really happy with the whole experience.

B
Ben A. 📍 Fremantle WA
★★★★★
2 months ago
✓ Verified Purchase

Quick delivery to regional QLD

The Zenith M16 arrived fast and works perfectly out of the box.

G
Grace W. 📍 Parramatta NSW
★★★★★
2 months ago
✓ Verified Purchase

Perfect gift — loved it

Bought this as a replacement for one I have had for years and I am glad I upgraded. The new one is noticeably better. Had a tracking number within a few hours of ordering. Packaging was excellent, nothing damaged. Already told a few mates about this site. Great prices and genuinely fast shipping.

O
Oliver H. 📍 Rockhampton QLD
★★★★★
2 months ago
✓ Verified Purchase

Arrived well packed

The Zenith M16 is a solid buy. I was a bit unsure about the size from the photos but it is perfect in person. Delivery was faster than expected. Very satisfied with this purchase.

N
Natalie F. 📍 Launceston TAS
★★★★★
3 months ago
✓ Verified Purchase

Better than expected

No issues at all. Fast delivery and exactly as described.

C
Chris N. 📍 Mackay QLD
★★★★★
3 months ago
✓ Verified Purchase

Great value for money

Spent a while looking for the right Zenith M16 and this kept coming up as the best value. I can see why — quality is impressive for the price. Delivery took just 2 days to Townsville which is great. Packaging was solid and everything intact. My partner and I both use it daily now. Highly recommended.

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