ANODZU Brake Cage Release Bolts for Semi Trucks — 10-Pack 1/2" Thread, 4-13/16" Galvanized

If you maintain heavy trucks or run a fleet, having a dependable set of release (caging) bolts on hand speeds brake service and reduces downtime. These ANODZU bolts are engineered to match common Bendix-style part numbers (including 800921, TR800921 and equivalents) and come in a bulk pack of ten so you can replace multiple units or keep spares for roadside repairs. The parts are made from galvanized iron to resist oxidation and wear in demanding vehicle environments.

How do these bolts fit my truck’s spring brake system?

These bolts use a standard 1/2" thread and measure 4-13/16" in overall length, making them compatible with many semi-truck spring brake assemblies that accept Bendix-style release bolts. Before installing, match the thread size and length to your existing bolt and verify the application against the brake manufacturer’s specifications to ensure a proper fit.

• Thread size: 1/2" standard thread
• Overall length: 4-13/16" (measured end-to-end)
• Intended for most semi-truck air spring brakes and Bendix-equivalent units
• Replaces common part numbers such as 800921, TR800921, 460-9007003

What materials and finishes are used, and why does that matter?

The bolts are manufactured from iron and receive a galvanized surface treatment. This combination provides mechanical strength while the zinc-based coating helps prevent rust and surface degradation where moisture, salt, and road debris are common.

• Core: durable iron for load resistance
• Finish: galvanized coating to resist corrosion
• Designed to hold up to repeated installation and field conditions

How simple is installation, and what tools are needed?

Installation is straightforward for anyone familiar with brake maintenance: remove the old release bolt, position the spring brake per service instructions, and thread in the ANODZU bolt to cage or release the spring. Typical installation takes only a few minutes when using the correct tools and following safety procedures.

• Tools commonly required: appropriate socket or wrench for 1/2" thread engagement
• Installation time: generally a few minutes per bolt for experienced technicians
• Includes ten locking bolts for multiple replacements or spares

Are there any purchase precautions I should know about?

Because spring brake components are safety-related, confirm the bolt dimensions and intended application before ordering. Mis-sized or incorrectly specified bolts can prevent proper operation or complicate maintenance, so cross-reference part numbers and measure your existing bolt if unsure.

• Verify 1/2" thread and 4-13/16" overall length against your existing part
• Confirm compatibility with your brake manufacturer’s model
• Keep a set of ten on hand to cover fleet needs or recurring maintenance

Who is this for: Fleet managers, owner-operators, and heavy-truck technicians who service air spring brakes will find this 10-pack of ANODZU release bolts practical for routine maintenance and emergency replacements. The pack size and corrosion-resistant finish suit businesses that require reliable, ready-to-install spares for roadside repairs or scheduled brake work. If you’re unsure whether these bolts match your brake assembly, measure your existing bolt’s thread and length or consult your brake parts diagram before purchase to avoid fitment errors.