Made from high-quality steel, these T-Nuts provide robust and reliable anchoring, ensuring that your climbing holds stay firmly in place. Perfect for both commercial and home climbing walls, our T-Nut Steel fasteners are designed to withstand repeated use and offer exceptional durability. With a design that allows for easy installation, these T-Nuts fit seamlessly into your climbing wall, providing a secure and stable foundation.

  • good for indoor climbing walls that will not be exposed to the elements
  • stronger than standard zinc plated t-nuts
  • will rust and corrode if exposed to rain or very humid conditions
  • attached by hammering into pre-drilled 12mm hole
  • threads are imperial 3/8" UNC
  • 25 - 35 t-nuts are recommended per m2 of climbing surface or 70-100 per full sheet of plywood

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Tools required to install: drill, 12 mm drill bit, hammer

TIP: To prevent corrosion place steel/zinc t-nuts into a plastic bag and treat them with a long lasting lubricant like CRC Long Life before you install them. Spray them in the bag and shake them around and make sure they are well coated, but not dripping, then install.

  • 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.

Reliable t-nuts with great delivery service

By: on 16 February 2026
Work as expected, accepting the risks of hammer-in tnuts vs screw in. Delivery and service was great.
(4)

Terrific quality and value for t-nuts

By: on 13 February 2026
I think I have around 100 T-nuts from uncarved block, 00 with this order and 500 previously. Terrific value and quality.,
(5)

Cheap and good quality with great service

By: on 6 February 2026
Cheap and good quality. Thanks for the great service
(5)

Good Price

By: on 5 February 2026
Do what they say on the tin, good price and work well.
(5)

I Was Originally Looking For Ss T-Nuts...

By: on 4 February 2026
I was originally looking for SS T-nuts but couldn't find any. Got the steel one and followed the advise - soaked in CRC before installation. Doing the job.
(4)

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