The GRACO 120138 is a cap screw with a socket head, designed for specialized applications within GRACO equipment. Its material is not specified in available sources, but it is intended for secure fastening in assemblies such as sprayers and related machinery. Key Features: Cap Screw Used in GRACO sprayers and related equipment (e.g., GH733, GH833, GH933, GH2570, GH5040 OEM kits) Socket head for secure installation and removal Special design for specific GRACO equipment needs Applications:Used in the assembly and maintenance of GRACO sprayers and related industrial equipment. Installation Notes: Using genuine GRACO parts ensures proper fit, function, and reliability within GRACO equipment. Ensure correct torque is applied to avoid over-tightening or under-tightening Use appropriate tools for socket head screws to prevent stripping Inspect threads and seating before installation