Application

Picture

Description

Early 1964-65

Type 1
2 hatchet head and 3 round detents, one interlock pin, 3 short heavy springs.

1966-67

Type 2
5 blunt point detents, 1 interlock pin, 3 heavy short springs.

1968-69

Type 3
5 sharp point detents, 1 interlock pin, 2 short heavy springs, 1 long heavy spring.

1969

Type 4
5 blunt point detents, 1 interlock pin, 2 short heavy springs, 1 long heavy spring.
 

1970

Type 5
5 black pointed detents, 1 interlock pin, 2 short heavy springs, 1 long heavy spring.

Part of 1971, all of 72 and 73

Type 6
5 black pointed detents, 1 tall detent 2 interlock pins, 3 short heavy springs, 1 short light spring. Used in D2 casting number cases.