CRL 6 x 1/2" Pan Head Spanner Tamperproof Type A-Sheet Metal Screws Quantity:Pack of 100 MR411LAC: 4/11" (280 mm) Diameter

MR411LAC: 4/11" (280 mm) Diameter Lipped

Double-cut

Overall size is 24-1/2" by 30-1/2" by 1" thick

and the brite zinc plating helps to prevent corrosion

CRL 6 x 1/2" Pan Head Spanner Tamperproof Type A-Sheet Metal Screws Quantity:Pack of 100 MR411LAC: 4/11" (280 mm) DiameterMade of Corrosion Resistant 8 18 Stainless Steel Protect Valuable Fixtures These CRL Spanner Head Tamperproof Security Screws protect valuable fixtures and equipment from theft and vandalism, because they are virtually impossible to remove without the special matching screwdrivers. Flat or pan head available in machine or sheet metal Type A Styles. A regular screwdriver will not work with these screws, you must use a Spanner Bit. Product images shown