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MGA Part Numbers - CHS0512

PART NO.  SPL.PAGE  DESCRIPTION                                                            
CHS0512   TC.A.11   Stud-bearing cap to top cover (6) -(chwvga, cyl.head, engine, Twin
    Cam) -was CLS0512

CHS0512 Stud is item #13 below (6), used to secure the top cover to the cam bearing cap (Twin Cam engine).

High strength stud (55-ton).
Length = 1-1/2"
Top end thread = 5/16-24-UNF x 5/8"
Bottom end thread = 5/16-18-UNC x 15/32"
Notice that original CHSxxxx studs have short dog point on top end, which males it very easy to start the nut.
A leading "0" means plain stud. -- A leading "2" means zinc plated.
MGA Twin Cam cylinder head parts