Products 1812400 Unit Price: $ 15.0200 /EA Pkg Qty: 1 Description: 5/16-18 STI H3 4FL PLUG Item Category Code: OSG Product Group Code: THREADING Chamfer Length: 4P - 4.5P Coating: BRIGHT Coolant Through: NO Flutes: 4 Material: HSS Overall Length: 2-23/32" Shank Diameter: 0.318" Size: 5/16 Square Size: 0.238" Style: STI Thread Class: UNC Thread Length: 1-1/8" Thread Limit: H3 TPI / Pitch: 18 × Warning! You are currently logged in as a guest, please login or continue as guest.