日本SHOWA昌合钮簧STB04-05-024   (10个/袋) Torsion Springs【1-10 Pieces Per Package】 (STB04-05-024) 304 Stainless Steel (SUS304WP-B), Various Turn Counts Part Number: STB04-05-024 We have standardized this torsion coil spring to help customers with spring design or calculation issues. [Features] - Made of stainless steel wire (φ 0.3 mm to φ 2.0 mm in diameter) with cold-molding for general use. - JISG4313 (stainless steel wire for spring) type B, SUS304WP-B. - * Features corrosion and heat resistance (to about 250 °C). - 350 °C to 400 °C low temperature annealing (no surface treatment). Configured Specifications   Free Angle θ Right Winding 135° coils Material Stainless Steel (SUS304WP-B) Inner Diameter ID 4 Allowable Twist Angle Фd(deg) 67 Wire Diameter d(Ø) 0.5 Number of Coils [4] 4.125 Free length(mm) 24