Screws for Trijicon RMR / SRO and Holosun 407c / 507c – 4-40 5/16″ and 1/4″

Screws included: Cover Plate Set – 4-40 5/16″ Torx T10 Screws Optic Mount Set – 4-40 1/4″ Torx T10 Screws Optic Mount Screws are compatible with Trijicon RMR / SRO and Holosun C series optics. Compatible with Zaffiri Precision slide models: Glock 17 Glock 17 Long Glock 19 Glock 26 Glock 34 Glock 45 (Glock 19 Gen 5) Sig P320c (Compact) Sig P320F (Full) These screws are not compatible with OEM slides or guaranteed to work with non ZP slides. Manufacturer’s Information:  Thread Size 4-40 Length 5/16” and 1/4″ Threading Fully Threaded Head Diameter 0.255″ Head Height 0.083″ Countersink Angle 82° Drive Style Torx Plus Drive Size IP10, T10 Material Black-Oxide Alloy Steel Hardness Rockwell C39 Tensile Strength 140,000 psi Screw Size Decimal Equivalent 0.112″ Thread Type UNC Thread Spacing Coarse Thread Fit Class 3A Thread Direction Right Hand Head Type Flat Flat Head Profile Standard System of Measurement Inch Specifications Met ASME B18.3, ASTM F835 RoHS RoHS 3 (2015/863/EU) Compliant REACH REACH (EC 1907/2006) (06/25/2020, 209 SVHC) Compliant DFARS Specialty Metals Compliant (252.225-7009) Country of Origin United States