Fastener Capscrew - 7/8 - 9 X

Fastener Capscrew - 7/8 - 9 X

This is a specialized 7/8-9 x 3 1/2 inch 12-point mounting bolt for concrete mixer drum drives. It is a critical fastener used to secure the ZF or ZT series gearbox to the mixer frame's rear pedestal. Due to the high-stress nature of the gearbox mounting, these high-strength bolts are essential for safe and reliable operation. Replacement is typically needed during gearbox service, repair, or when bolts show signs of wear, corrosion, or stretching.

Key Features

• 12-point head design for high-torque applications
• Used as a mounting bolt for ZF or ZT mixer drum drive gearboxes.
• Dimensions: 7/8"-9 thread size by 3 1/2" length.
• High-strength alloy steel construction for durability and safety

Fits These Mixers

McNeilus, Terex, Con-Tech. Fits mixers equipped with ZF or ZT series drum drive gearboxes. Six bolts are required per gearbox. On Terex Advance concrete mixers, these bolts thread directly into the rear pedestals and do not require nuts.

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.