Types

• Type A: without bore (unmachined)

• Type B: with plain through bore H7

• Type C: with plain blind bore H7

• Type D: with threaded through bore

• Type E: with threaded blind bore

Fettled and tumbled

Zinc plated, blue passivated ZB

Thread: screw mobility

Only types D and E

Stainless Steel precision casting NI

Only types A, D, E

• AISI CF-8

• Matt shot-blasted

Aluminium AL

Only types A, C, D, E

• Matt finish (ground), flash mark not visible MT

• Polished PL