Zenith M16 x 100mm Hot Dip Galvanised Cup Head Bolts & Nuts - 4.6 Grade, 12 Pack
Description & Specs
The Zenith M16 x 100mm Hot Dip Galvanised Cup Head Bolts and Nuts are a 12 pack in 4.6 grade steel for heavier fixings. The low-profile cup head sits flush and the square neck under the head limits the bolt spinning while you tighten the nut.
- Bolt size: M16 x 100mm
- Material: 4.6 grade steel
- Finish: Hot dip galvanised
- Head type: Cup head
- Colour: Grey
- Pack quantity: 12 bolts and nuts
These M16 bolts suit heavier general construction such as gates, retaining walls and structural timber framing, fastening timber to timber, metal to timber or metal to metal. The hot dip galvanised finish gives strong corrosion resistance for outdoor and exposed work.
More about this product
Zenith M16 x 100mm Hot Dip Galvanised Cup Head Bolts and Nuts 12 Pack offer a fastening solution with a low-profile design, suited to general construction applications. The low-profile cup head provides a flush finish and the square neck limits bolt spinning during installation. The coarse thread provides strong grip, and hexagonal nuts are included.
- Low-profile cup head for a flush finish
- Square neck limits bolt spinning during application
- Coarse thread for strong grip
- Hexagonal nuts included
- 4.6 grade steel, hot dip galvanised, M16 x 100mm, 12 pack
Questions & Answers
What size are these bolts?
M16 x 100mm cup head bolts, supplied with nuts as a 12 pack.
What grade and finish are they?
4.6 grade steel with a hot dip galvanised finish.
Are the nuts included?
Yes. Hexagonal nuts are supplied with the bolts.
What jobs do they suit?
Heavier general construction such as gates, retaining walls and structural timber framing.
How many are in the pack?
This is a 12 pack.
Shipping & Returns
Ships in 1-2 business days from our Australian warehouses
Change your mind? Return within 30 days for a full refund. Item must be unused and in original packaging.
Customer Reviews
Absolutely love it!
Had the Zenith M16 on my wishlist for a few weeks and finally pulled the trigger. Arrived in 2 days which was a nice surprise. Build quality is solid and exactly what the photos showed. My partner uses it every day now and has already asked me to grab another one as a gift.
Best buy of the year
Ordered Thursday and had it by Saturday. Packaging was really good — nothing moved around. Works exactly as expected and the price was well below what I saw in stores.
Fast delivery — impressed
Love my Zenith M16. Does the job perfectly and the price was unbeatable.
Exactly as described
Always buy Zenith when I can — consistent quality and you know what you are getting. This one is no different. Fast dispatch and arrived in perfect condition.
Would buy again for sure
Was a bit skeptical ordering online but really glad I did. The item arrived in a sturdy box — nothing rattled or was damaged. Set it up in about 10 minutes and has been working perfectly since. Compared to what I saw in store I saved a solid amount. Will definitely be back.
Good product for the price
Fast delivery to regional WA. Solid product and works exactly as described.




