About Us Contact Us Shipping Easy Returns Privacy Terms of Service Instant Quote Trade Accounts Installation
Trusted by Builders and Subbies. +50,000 products shipped to sites Australia wide.
Trusted by Builders and Subbies. +50,000 products shipped to sites Australia wide.
Skip to content
Hex Head Bolt 35mm x 16mm

Hex Head Bolt 35mm x 16mm – Precision Steel Fastener

Delivery in 3 - 5 days. MAX 5 day delivery guarantee! Metro BNE, SYD, MEL.

ASNZ 2890.1:2004 compliant for car parks.

60 day returns. No re-stocking fees.

100% money back guarantee. Not satisfied? Full refund, no questions asked.

$150 inc GST minimum order

Buy now!

$1.13 inc GST

Notify me when back in stock

Guard Rail Hex Head Bolt – 35mm x 16mm

Secure your guardrail system with confidence using the 35mm x 16mm Hex Head Bolt, specially designed to fasten guardrail blocks to posts with ease and reliability. This Grade 4.6 bolt delivers a strong clamping force, ensuring structural integrity in high-traffic or high-impact environments.

Compatible with the Car Parks and Roads Guardrail System, this bolt is a critical component for properly connecting spacer blocks to C-posts in car parks, roadways, warehouses, and factory installations.


Key Features:


  • Grade 4.6 Hex Head Bolt – engineered for strength and durability
  • Optimised Length: 35mm long – perfect fit for spacer block to post connections
  • Thread Size: 16mm
  • Corrosion-resistant: Suitable for outdoor or industrial use when paired with galvanised components


Applications:


  • Mounting guardrail blocks to in-ground or baseplate posts
  • Use in conjunction with other guardrail bolts for full system installation
  • Warehouses, car parks, roadside, and civil infrastructure


Frequently Asked Questions (FAQ)


Is this bolt galvanised?
This listing is for a standard Grade 4.6 bolt. For galvanised or corrosion-resistant options, please contact our sales team.


How many bolts are required per post connection?
Typically, one hex bolt is used per block-to-post connection, but this can vary depending on your setup. Contact us for technical guidance.


Can I purchase these bolts in bulk?
Yes, bulk pricing is available. Get in touch for large quantity orders or custom kits.


Contact us, and our team will help you build the right system, including rails, posts, bolts, and accessories suited to your site.

Who we've worked with

Description

Guard Rail Hex Head Bolt – 35mm x 16mm

Secure your guardrail system with confidence using the 35mm x 16mm Hex Head Bolt, specially designed to fasten guardrail blocks to posts with ease and reliability. This Grade 4.6 bolt delivers a strong clamping force, ensuring structural integrity in high-traffic or high-impact environments.

Compatible with the Car Parks and Roads Guardrail System, this bolt is a critical component for properly connecting spacer blocks to C-posts in car parks, roadways, warehouses, and factory installations.


Key Features:


  • Grade 4.6 Hex Head Bolt – engineered for strength and durability
  • Optimised Length: 35mm long – perfect fit for spacer block to post connections
  • Thread Size: 16mm
  • Corrosion-resistant: Suitable for outdoor or industrial use when paired with galvanised components


Applications:


  • Mounting guardrail blocks to in-ground or baseplate posts
  • Use in conjunction with other guardrail bolts for full system installation
  • Warehouses, car parks, roadside, and civil infrastructure


Frequently Asked Questions (FAQ)


Is this bolt galvanised?
This listing is for a standard Grade 4.6 bolt. For galvanised or corrosion-resistant options, please contact our sales team.


How many bolts are required per post connection?
Typically, one hex bolt is used per block-to-post connection, but this can vary depending on your setup. Contact us for technical guidance.


Can I purchase these bolts in bulk?
Yes, bulk pricing is available. Get in touch for large quantity orders or custom kits.


Contact us, and our team will help you build the right system, including rails, posts, bolts, and accessories suited to your site.

Shipping

Shipping Information

Domestic Shipping (Australia)

Due to the size and weight of most orders, shipping is automatically calculated at checkout. Below is a guide to our freight charges:

  • Order value $1 – $299: $69 shipping
  • Order value $300 – $599: $99 shipping
  • Order value $600 – $849: $139 shipping
  • Order value $850 – $1,099: $169 shipping
  • Order value $1,100 – $1,500: $199 shipping
  • Order value $1,501 – $2,499: $239 shipping
  • Order value $2,500 and above: $299 shipping

Please note: We operate a freight-only model. We do not offer customer pick-up from our warehouses. All orders are dispatched via courier or freight carrier to your site or depot. This ensures faster delivery times, tighter quality control, and minimal disruption to warehouse operations.

Order Confirmation

Once your order is placed, you’ll receive an order confirmation email. This confirms that your order has been received and your payment has been pre-authorised.

We will then verify stock availability. If an item is unavailable or on back-order, we’ll void the pre-authorisation and contact you to discuss alternative options.

If your item is in stock and available for immediate shipment (within 5 business days), we will finalise payment and prepare your order for dispatch.

Order Dispatch & Shipping Notifications

If your order is in stock, it will be shipped within 3 business days of order confirmation.

All orders are shipped via freight only — no pick-up is available. You’ll receive a shipping confirmation email with tracking details within 24 hours of dispatch.

If you haven’t received a shipping notification within 4 business days, please contact us at orders@carparksandroads.com.au.

International Orders

We do ship internationally, but please note:

  • Our products are built for the Australian market (240V electrical systems).
  • They may not meet overseas electrical safety certifications.

We can provide a shipping quote for international orders upon request. If you’re happy with the quote, we’ll send a secure payment link and process your order manually.

Damaged Deliveries

Please inspect your items immediately upon delivery.

  • If you notice damage on arrival, note it on the delivery docket or reject the shipment.
  • If you do accept a damaged delivery, take photos of the packaging and product immediately.

To lodge a damage claim, send photos to orders@carparksandroads.com.au and visit our Returns page to submit a claim online.

Why Buy From Us

With 18 years serving the construction industry, we know exactly what you're going through at the end of a job.

 

Here's why you should shop with us at Car Parks and Roads.

 

  • Product knowledge. We know what you need to finish the job and get certified.

 

  • On time deliveries. You'll get priority shipping Australia wide from our closest dispatch warehouse. Next day shipping for orders before 3pm.

 

  • 60 day easy returns. Not happy with your product, we'll take it back no questions asked.

 

  • Your satisfaction guaranteed. We handpick our products for compliance and quality. If there is ever something wrong, we'll fix it straight away.

We get it . . .

We've got 18 years experience

in the Construction Industry.

Buy online - fast and easy.

Or send us your plans for a project quote.

orders@carparksandroads.com.au

30 day accounts upon application.