HIGH SECURITY FASTENERS For Correctional Facilities Only Do these look familiar? WARNING: THESE PROFILES ARE NOT SECURE! If you use any of these you are NOT protected. Nearly all common tamper-proof screws use bits that are available at any hardware store. Mark's High Security Fasteners are not just a tamperproof, vandal-proof, tamper-resistant screw. These fasteners are the world's most secure, tamper-proof screws and bolts on the market. Only a correctional facility can buy the bits to fit these fasteners which are designed to be nearly impossible to remove without the bit. Years of work have gone into developing the unique shape, structure and extreme torque values to make it deflect or defeat common tools without giving way. Our fasteners are a high security, custom locking system. Every keyway is unique and has an asymmetrical shape making it extremely difficult to compromise. Like the tumblers of a lock the unique keyway shape allows only it's matched key to fit. The fastener shapes are created using an encryption process that builds a shape out of millions of variables and defines a unique code for each part. A unique cold forging process keeps precision high and costs low. Security level: Mark's High Security Fasteners: * Are the only high-security fastener of its kind * Requires a perfectly manufactured companion key/bit to remove or install * The keyway is private, and unique for total " lock " security * Repels all other security bit tips and common tools * Can be power driven for speed and torque * Is rust-proof, stainless steel * Is the least expensive " lock " on the market. Cat. # Description Type Head Bit to use 42997 #6 Key -- -- 42998 #12 Key -- -- 42999 #25 Key -- -- 42000 6-32 x 1/2 " SS Screw Button Head #6 Key 42001 6-32 x 3/4 " SS Screw Button Head #6 Key 42005 8-32 x 1/2 " SS Screw Button Head #12 Key 42006 8-32 x 3/4 " SS Screw Button Head #12 Key 42007 8-32 x 1 " SS Screw Button Head #12 Key 42009 8-32 x 1-1/2 " SS Screw Button Head #12 Key 42010 1/4-20 x 1/2 " SS Screw Button Head #12 Key 42011 1/4-20 x 3/4 " SS Screw Button Head #12 Key 42012 1/4-20 x 1 " SS Screw Button Head #12 Key 42013 1/4-20 x 1-1/4 " SS Screw Button Head #12 Key 42014 1/4-20 x 1-1/2 " SS Screw Button Head #12 Key 42015 1/4-20 x 2 " SS Screw Button Head #12 Key 42016 1/4-20 x 3 " SS Screw Button Head #12 Key 19-4B Driver bits are actually " keys " and only they can remove the fastener. REVISION 08/23/19https://www.markspp.com/Catalog/Detail/32578 https://www.markspp.com/Catalog/Detail/32579 https://www.markspp.com/Catalog/Detail/32580 https://www.markspp.com/Catalog/Detail/32565 https://www.markspp.com/Catalog/Detail/32566 https://www.markspp.com/Catalog/Detail/32567 https://www.markspp.com/Catalog/Detail/32568 https://www.markspp.com/Catalog/Detail/32569 https://www.markspp.com/Catalog/Detail/32570 https://www.markspp.com/Catalog/Detail/32571 https://www.markspp.com/Catalog/Detail/32572 https://www.markspp.com/Catalog/Detail/32573 https://www.markspp.com/Catalog/Detail/32574 https://www.markspp.com/Catalog/Detail/32575 https://www.markspp.com/Catalog/Detail/32576 https://www.markspp.com/Catalog/Detail/32577