#4-40 TPI, 0.144 to 0.159" OD, 0.224" L, Matte Black, Primer Free II Coated, 304 Stainless Steel, 6-3/4-Coils, Diamond Knurled, Screw-Locking, Screw Threaded Insert Screw Threaded Insert Type Diamond Knurled, Screw-Locking Nominal Diameter #4 TPI 40...