Looking to build your own spindles/uprights using a bolt-on hub spindle snout? Our TT spindle snout block is CNC machined in-house from aircraft quality 4130 chromoly that’s 5/8" thick. It’s 5" x 7.25" and uses the industry standard Dana 44 bolt pattern that we have doubled up (12 on 4" with 3.375" ID bore). The bolt holes are 3/8-24 and we recommend using mil-spec AS MS21250 series 12pt bolts to attach the snout with. The spindle bore is machined undersized and will need to be final machined for a slight press fit after welding and/or heat-treatment. These are thicker and taller than our standard square versions. We've also pocketed these to reduce weight without compromising the strength. Designed for all Camburg 12 bolt spindle snouts among many others We machine all sides and the top & bottom surfaces so everything is parallel. Nothing is laser or waterjet cut like cheaper versions. Sold individually 4130 aircraft quality chromoly All surfaces CNC machined 5" x 7.25" x 5/8" thick 12 bolt Dana 44 pattern The spindle bore is machined undersized and will need to be final machined for a slight press fit after welding and/or heat-treatment.