AASHTO M180
Guardrail Post Cap
Part of the Guardrail Accessories range · Highway Guardrail.
Model: Z-1
A guardrail post cap closes the top of every steel post, keeping water out of the section and finishing the line of posts cleanly. Except highway guardrails we also provide high quality accessories including caps, bolts, nuts, and offset blocks for providing a convenient installation for you. Specification 114/140*4.5/5/5.5*100-150mm Zinc coating Greater than or equal to 275g/m2 or as…
- Standard AASHTO M180 / EN 1317
- Material Q235B / Q345B steel
- Surface Z-1
- MOQ 1 × 20GP container
- Lead time 15–25 days
- Mill test certificate with every shipment
- Shop drawings and setting-out plan included
- Custom lengths, hole patterns and coating weights
Technical specification
| Name | Code | Spe | Zn attach(g/m2) | Zn thick(um) |
|---|---|---|---|---|
| Spray plastic Finishpost cap | Z-1 | 114 | Average Zn attach: more than 275 | Average Zn thick: more than 39 |
| Z-2 | 140 | |||
| Galvanized post cap | Z-1 | 114 | Average Zn attach: more than 350 Minimum Zn attachmore than 275 | Average Zn thick: more than 50 MinimumZn thick: more than 39 |
| Z-2 | 140 |
Dimensions shown are the standard range. Non-standard lengths, hole patterns and coating weights are produced to order — send your drawing for a confirmation drawing.
Description
Except highway guardrails we also provide high quality accessories including caps, bolts, nuts, and offset blocks for providing a convenient installation for you.
Specification
114/140*4.5/5/5.5*100-150mm
Zinc coating
Greater than or equal to 275g/m2 or as custemized
Feature
High intensity, Water-proof
Long and durable
Easy to assembly, easy to install
Corrosion resistance, Eco-friendly

Key features
- Reflectors, end caps, bolts, nuts, washers and pavement markers
- Grade 8.8 bolts and hot-dip galvanized fasteners as standard
- Reflectors in white, red, yellow and dual colour, tape or moulded
- Packed as kits per barrier run so nothing is short on site
- All items hot-dip galvanized to match the beam and posts
Where it is used
- All guardrail installations
- Visibility and night-time marking
- Bolt replacement and repair
- Sign and delineator schemes
- Barrier transitions
- Site packing and delivery kits
Complete the system
A barrier is supplied as a set. These are the components that go with this item on a typical installation.
Not sure which specification fits?
Tell us the road class, design speed and the standard your client is working to. Our engineer will come back with the section, the coating weight and the post spacing that meet it — and the price for the quantity you need.
Ask an engineerOther items in this range
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Guardrail Bolts and Nuts
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Guardrail Pavement Marker
A guardrail pavement marker picks out the line of the barrier at night, so a driver reads the…
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