Stainless Steel Bolts

  • 3/8" diameter
  • UNC threads 
  • Available in lengths:  1", 1.5", 2", 2.5", 3", 3.5", 4", 5", 6"
  • To tighten these bolts you will require a 5/16" Allen key or you can use our specially designed Ergo Wrench.
  • Countersunk Head bolts availble in 1.5" lenght and require a 7/32" Allen key, or our Ergo Wrench.
  • HOW TO ATTACH A CLIMBING HOLD TO A PLYWOOD WALL - Click Here
  • All bolt-on holds/sets require socket head type bolts, except for the Classic Footholds Set which requires countersunk head bolts.
  • All bolts Uncarved Block sells are imperial 3/8" diameter with UNC threads. All holds compatible with 10mm metric bolts.
  • Unless otherwise stated, t-nuts are not included with holds or sets.
  • Any items shown in pictures other than holds are to show scale and are not included with purchase.
  • More information about hold colors click here.
  • Bolts optionally supplied with holds/sets are suited for 17 mm thick climbing walls, if you require longer bolts order these separately.
  • It is cheaper & faster to select random colours.

These Certainly Are Stainless Steel Bolts

By: on 4 February 2026
These certainly are stainless steel bolts. They function as you'd expect! Couldn't ask for more from them really. It probably goes without saying that these are required equipment if you want your holds to stay on the wall.
(5)

These Are About What You'D Expect -...

By: on 4 February 2026
These are about what you'd expect - good quality, no complaints. You'll find your holds don't stay on the wall very well without these to fix them in place - you're welcome to test that out of course, but I bet you'll end up buying these bolts after gravity teaches you a lesson.
(5)

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