Rock Exotica rockSteel Screw-Lock


rockSteel Carabiner

The rockSteel offers a surprising strength-to-weight ratio in a carabiner of its capacity. Most steel carabiners are made from 1/2 diameter steel. We use a lighter, 7/16” diameter steel that is heat treated for added strength.

Like our aluminum carabiners, the Rocksteel frames are CNC machined for precise fittings and exact tolerances. The result is a carabiner with a high strength-to-weight ratio, keylock snag-resistant nose and a feel like no other steel carabiner in the world.

The rockSteel carabiner is ANSI Z359.12 (09) and NFPA G compliant. The gate/sleeve is rated at 16kN or 3600 lbs, to protect against inward force against gate.

Steel Carabiner Tech Notice (.pdf)
View Complete Specs for rockSteel Carabiners


    • Large frame, with large, 1.2″ gate opening
    • Impressively strong, yet lightweight
    • Rated for inward gate force
  • ANSI Z359.12 (09) and NFPA G compliant


Pull down toward palm, twist and open. 3-stage mechanism. 

Spin gate downward and open. 2-stage mechanism.


rockSteel Screw-Lock

Gate Screw-Lock
Ref # M31 SL
MBS-Major 48kN
MBS-Minor 15kN
MBS-Open 18kN
Gate Opening 1.2″ (30 mm)
Weight 8.10 oz (226 gm)
Height 4.9″ (125 mm)
Width 2.95″ (75 mm)
Color Silver
Certification CE/UIAA
SKU: M31 SL Categories: ,