#12 Indent Hex Washer Head (HWH) UnSlotted Self-Drilling* sheet metal screws with EPDM sealing washers. These are made from 410 Hardened Stainless Steel (410 stainless steel is always magnetic)
Diameter: #12 / 0.216"
Thread Size: 14 TPI
Material: 410 Hardened Stainless Steel (Washer, EPDM)
Type: Sheet Metal Screw, Self-Drilling w Bonded Sealing Washer, #3 point
System of Measurement: Inch (Imperial / US)
Width Across Flats (AF): 5/16: (Hex Drive size)
Head Diam. (Max, Min): Max 0.432", Min 0.398"
Head Height (Max, Min): Max 0.194", Min 0.161"
EPDM Washer Diameter: 5/8" (0.625")
Specifications: ASME B18.6.3, IFI-113
*Self drilling through metal up to 0.150" or up to 12 Gauge sheet metal. For best results, use high pressure, low speed to avoid wearing out the self-drilling tip.