Material: High Carbon Steel *Metric or SAE: SAE *Number in Package: 1 *Packaging Type: Carded *Product Type: Bottom Tap *Sub Brand: Hanson *Usage: Routine maintenance *Brand Name: Irwin *Drill Bit Included: *Fastener Diameter: *Length: 8.5 *Number of Flutes: *Recommended Drill Bit Size: *Style: *Tap Size: 5/16 *Thread Pitch: 18 *Thread Type: NC *Die Size: Vendor Internet Sales Policy: Sale of this product on third-party online marketplaces (eg. Amazon, eBay, Walmart) or member-owned websites is prohibited without direct written authorization from Stanley Black & Decker.