Black version--Aluminum, powder coated, textured finish
Tumbled version--Aluminum, matte shot-blasted finish
Clamping bores not machined
Cap screws: DIN 912, stainless steel, European Standard No. 1.4301 (American Standard Series 304)
Nylon insert hex nuts: DIN 985, stainless steel, European Standard No. 1.4301 (American Standard Series 304)
ADJUSTABLE CLAMPING LEVER KITS GN 911 (SOLD SEPARATELY):
These kits can be used to replace the DIN 912 cap screws with adjustable levers. They include lever, spacer bushing, and hex nut, unassembled. See GN 911 to order separately; see right hand column in tables for part numbers of appropriate kit.
The clamping bores of GN 141 flanged two-way connector clamps are not machined, and designed for construction tubings GN 990 or DIN 2391, DIN 2395 and DIN 2462 respectively.
They are available with round bores d1 and d2 and square bores s1 and s2, but can also be supplied with round and square bore combinations d1 and s2 upon request.
In the standard version, the clamping force of the clamp onto the tube is achieved via the socket cap screws and hex nuts with nylon insert.