The SL31C-12 P07 stud is a PMA aircraft engine threaded stud used in Continental-compatible piston engines. It is a double-ended steel stud with 5/16-18 UNC coarse threads, designed to be permanently installed into an engine case or component to provide a durable threaded mounting point for nuts and attached accessories.

The P07 suffix indicates a controlled dimensional variant (+.007 tolerance class) used to match specific engine build requirements and ensure proper torque and engagement depth.

Key features include:

PMA aircraft engine stud
Thread size: 5/16-18 UNC (coarse thread)
Length: 1.5 inches
Precision-machined steel construction
Double-ended threaded design
Installed into engine case for reusable fastening points
Reduces wear on aluminum or case threads in engine structures
Designed for high vibration and cyclic load environments
Controlled tolerance variant (P07 fit class)
Used in Continental piston engine assemblies (model-dependent IPC use)
Standard component in engine assembly and overhaul procedures