Uxcell 5/16"-18 Bsw Spiral Flute Thread Tap, Machine Threading Tap, H2 Tolerance Product Details Specifications: Tap Size: 5/16"-18 BSW thread, H2 tolerance. Spiral flute design, upward chip removal. Right hand thread cutting, clear threads without burrs, fast tapping with accuracy. Material and Finish: M35 cobalt high-speed steel tool (5% Co) is with high hardness (up to around 67HRC) and toughness for wear resistance. Features just the base substrate without any additional coatings, great for wide ranges of applications. Applications: Suitable for processing blind holes and sticky materials. Great for drilling and tapping aluminum, die steel, stainless steel, bronze, hard plastics, etc. Easy to Use: Used on drilling machines, tapping machines, CNC and milling machines. Use with tapping oil to get higher quality threads and more durable taps. Tips: Machine taps are suggested to be used with tap collets with overload protection. Hand use is easy to cause damage to the tap due to uneven force. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.