Brass Spiral Insert, Type-D with Flange, 1/4-20, 13mm OAL
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Thread Size 1/4-20 Overall Length (OAL) 0.512" [13mm] Flange Diameter (D) 0.472" [12mm] Max. Taper Dia. (d) 0.354" [9.00mm] Hex Depth (H) 0.138" [3.5mm] Flange Height (h) 0.039" [1mm] Hex Width (W) 0.250" [6.35mm] Pilot Hole Size 5/16" Material Brass