Abstract: A plug assembly configured for installation in a hammer assembly, the plug assembly comprising a cylindrical plug and an anti-rotation component. The cylindrical plug may include a plug head and a plug body. The cylindrical plug may include a receiving feature located in the plug head. The anti-rotation component may include a first locking feature and a second locking feature. The first locking feature may be configured to fixably engage with the receiving feature. The second locking feature may be configured to engage with the hammer assembly.

Abstract: A plug assembly configured for installation in a hammer assembly, the plug assembly comprising a cylindrical plug and an anti-rotation component. The cylindrical plug may include a plug head and a plug body. The cylindrical plug may include a receiving feature located in the plug head. The anti-rotation component may include a first locking feature and a second locking feature. The first locking feature may be configured to fixably engage with the receiving feature. The second locking feature may be configured to engage with the hammer assembly.

Abstract: A plug for closing an aperture defined in a machine component includes a flange, a first portion, and a second portion. The first portion includes a first set of threads configured at a first pitch to engage with threads on the machine component, and a second set of threads configured at a second pitch to lock with the threads on the machine component and retain the first portion within the aperture. The second portion includes a neck portion, and a bolt head extending from the neck portion. The neck region is configured to withstand a pre-determined maximum torque load. The bolt head is operable to threadably engage the first set of threads and the second set of threads with the threads of the machine component and allow shearing of the neck portion if a torque applied on the bolt head exceeds the pre-determined maximum torque load.