Fastener Flatwasher - 5/8

Fastener Flatwasher - 5/8

This is a 5/8" hardened steel flat washer, specifically used in high-stress fastening applications on concrete mixer trucks. Designed to be paired with high-strength bolts (like Grade 8 or ASTM A325/A490), this washer provides a larger surface area to distribute the load from a bolt head or nut, preventing pull-through and ensuring a secure connection. Its hardened steel construction (per ASTM F436) makes it essential for structural joints and component mounting on McNeilus and Terex mixers, where vibration and heavy loads require superior fastener strength and durability.

Key Features

• Designed for 5/8" diameter bolts
• Constructed from hardened steel for use with high-strength bolts
• Meets ASTM F436 specifications for structural washers
• Distributes load to prevent damage and loosening from vibration
• Used for structural and heavy-duty fastening on concrete mixers

Fits These Mixers

McNeilus, Terex, Con-Tech. Fits various general fastening applications on McNeilus and Terex concrete mixers where a 5/8" hardened structural washer is required.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.