316 Stainless Steel Sleeve Bolt
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316 Stainless Steel Sleeve Bolt
10 mm / 70 mm
How NOT 2 LLC
1065 12th Ave NW
Suite E7
Issaquah WA 98027
United States
Description & Tech Specs
Why sleeve bolts? Sleeve bolts make for easy installation and secure hold on softer rock. The sleeve adds strength by making contact with the rock throughout the length of embedment. This makes sleeve bolts more appropriate for weaker rock and varying rock types.
This 4-piece 316 Stainless Steel Sleeve Bolt is composed of a hex cap bolt, washer, sleeve, and a straight-knurled conical nut of all the same stainless steel grade. All four components have been passivated for extra corrosion resistance. Climbing Taiwan chose hex bolts (partially threaded) because they offer additional strength over set screws (fully threaded) particularly in radial loads. Components are manufactured in China and further processed, inspected, and assembled in Taiwan.
Since sleeve bolts have a smaller bolt enclosed in a larger sleeve, installation is different compared to wedge bolts. They will require a differently sized hanger compared to the drill bit that’s needed to drill out the hole. Below is a guide to each bit, hanger, and wrench required for each.
|
Sleeve Bolt |
Hanger Diameter (Bolt Size) |
Bit Diameter (Sleeve Size) |
Wrench Size (Hex Head) |
Torque |
|
10 mm |
8 mm 10 mm * |
10 mm (3/8" will not work) |
13 mm 1/2 inch |
15 lb (20 N.m.) |
|
12 mm |
10 mm 12 mm * |
12 mm |
17 mm 11/16 inch |
25 - 30 lb (30-40 N.m) |
*Make sure the sleeve fits inside the hanger hole
For hanger hole size & bolt diameter interaction (e.g. the hanger going on the hex bolt vs. the sleeve), we have some observations based off testing HERE of the pros and cons. Our current preferred configuration for the 12mm sleeve bolt is using a 10mm (3/8") hole hanger that goes on the hex bolt. For 10mm sleeve bolts, either configuration is fine, yet the hanger on the bolt is still our preferred way.
For all general rock climbing and routes with more traffic, we recommend the 12mm sleeve bolt size, especially for any overhanging or steep placements. 10mm sleeve bolts are fine for less steep routes (low angle).
There's further discussion about these sleeve bolts on this forum thread.