Pre-torque Flangeless Fittings Pre-torque flangeless fittings offers a unique system for hand-tight fittings. As the fitting is tightened, the resistance of the cap increases until the correct torque is reached at which point the cap clicks. The user is able to hand-tighten the fittings without tools or guesswork and be confident that the fitting is properly seated, creating a secure seal without damaging the port through over-tightening. The fitting can be unscrewed and reused dozens of times. ♦ The only multiuse fingertight fittings that cannot be over-tightened or under-tightened ♦ PP or PTFE pre-torque flangeless nut come with PP or PFA ferrule ♦ Compatible with flat bottom receiving port ♦ Offer three torque ranges from 0.11 to 0.25N/m in wide application possibilities ♦ Offer three types of caps (Knurled, Double-Winged, Waved) to cover more possible application requirements ♦ Used for standard rigid tubing OD1/16” (1.6mm), 1/8” (3.175mm), 2.0/2.5/3.0/3.2mm Step 1. Slide the nut, followed by the ferrule, at least 3/16” (4.7625mm) from the end of clean cut tubing Step 2. Insert the assembly into the receiving port, pushing the tubing into the port until it bottoms out Step 3. Finger or wrench tighten the fittings until the cap comes out “click” which means properly tightened Step 4. After disassembling, the ferrules should be replaced in next assembly and connection YX Nut Shape YX -Knurled BX -Double-Winged HX - Waved Thread Material YJLDZ-HX-06E-(015/020) Pre-torque flangeless nut made of waved nut shape, M6 male thread, PTFE material, 3.87mm big port, 0.15-0.20N/m torque range YC-030-P Flangeless ferrule made of PP material, suit for tubing OD3.0mm Dimension (unit: mm) Connection