Helical Insert Helical Insert Type Screw-Locking System of Measurement Inch Overall Length 1/2 in Thread Size 1/4 In.-20 Thread Direction Right Hand Thread Type Coarse Material Stainless Steel Material Grade/Class 18-8 Finish Plain Tang Style Tangless Compatible Material Metal Compatible Tap Size 1/4 In.-20 Drill Bit Size G Maximum Hole Diameter Not Applicable Tensile Strength 200 000 to 250 000 psi Outside Diameter 0.32 in Manufacturer Location Made in USA