Correct SAE Bolt Replacement for a Metric M8 x 15mm Bolt
Updated 06/21/2023 | Published 06/20/2023 >
Question:
I have an ARKSEN hitch-mount bike rack, and a draw-tite 2" hitch. Im looking to replace the locking knob which wedges the rack in place in the hitch. mechanism is actually OK, but the lock cylinder itself is fubar I need 15 bolt length with a 8mm thread. I also have taps and dies, if I would need to swap over to SAE sizes Can you steer me toward any of your parts? THANKS!
asked by: Russ
Expert Reply:
While we do not have the replacement locking knob you're needing for your ARKSEN bike rack we do have a wide variety of replacement bolts that we can help you with.
With your old bolt being a M8 x 15mm metric bolt, you're going to need to swap it over to SAE as we do not have a corresponding replacement. To do this, you're going to need the Replacement Hex Bolt for Dexter Model 6 Actuators # T1781500.
This bolt is 5/16" x 1/2" which is going to be the closet we carry to what you currently are using. The 15mm length translates to a little over 1/2" and M8 rounded to the nearest 64th inch is 5/16".
Since you mentioned you already have drill taps you'll just have to re-tap the hole and you'd be good to go.

Product Page this Question was Asked From
Replacement Hex Bolt for Dexter Model 6 Actuators - 5/16 x 1/2 - Self Tapping
- Accessories and Parts
- Brake Actuator
- Disc Brakes
- Hydraulic Drum Brakes
- Hardware
- Bolts
- Dexter
more information >
Continue Researching
- Q&A: What are the Thread Dimensions of the Replacement Hex Bolt for
- Q&A: Troubleshooting Installation of Titan Replacement Master Cylinder Assembly T1777401
- Q&A: Do I Clean Or Replace The Master Cylinder on a Titan Model 6 Actuator That is Full of Rust?
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: Brake Controller Installation: Starting from Scratch
- Q&A: What is the Difference Between the Tekonsha Prodigy P2 and the P3 Brake Controllers
- Article: Trailer Wiring Diagrams
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Should I Get a Proportional or Time-Delayed Brake Controller
- Article: 5 Things to Know About Weight Distribution Hitches
- Article: How to Measure for Trailer Hitch Drop
- Article: Towing a Trailer? Let's Talk About Brake Controllers