APPENDIX E (cont)
TORQUE LIMITS (cont)
TABLE E-4. TORQUE LIMITS FOR AIR FITTINGS, HOSE CLAMPS AND PLUGS.
SAE Flareless Fitting. Bottom tube into fitting body and tighten nut until sleeve grips tube firmly enough to
prevent movement. Tighten nut 1 to 1-1/4 additional turn. For reassembly, tighten until a sharp rise in torque is felt, then
tighten an additional 1/6 to 1/3 turn.
High-duty (Shear Sleeve) Tube Fittings. Bottom tube into the fitting body and tighten nut until a slight yield is
felt, indicating that the sleeve has been sheared from the nut. Tighten nut an additional 1/2 turn.
Flex Fittings. Slide nut and sleeve over tubing. Bottom tube in counterbore of fitting body. Tighten nut until it
bottoms on hex part of fitting body.
TORQUE LIMITS FOR FLARELESS FITTINGS