The DM537401 is a D-Sub coaxial male pin contact from ITT Cannon. It features a machined copper alloy body with gold plating and crimp termination for coaxial cable.
TE Connectivity 228618-2 is a size 8 coaxial male pin contact with gold-plated beryllium copper material, designed for crimp termination to RG-179/U coaxial cable.