TOP LINK PINS
CATEGORY
PART No
DIAMETER
USEABLE LENGTH
CAT 0
B6831
5/8" (16mm)
3" (76mm)
CAT 1
B73
3/4" (19mm)
B75
3 3/8" (86mm)
B74
3 7/8" (100mm)
B77
4 3/4" (120mm)
CAT 2
B1200
1" (25.4mm)
3" (76mm)
B76
3 7/16" (88mm)
B81
4 1/2" (115mm)
B80
5 3/8" (137mm)
CAT 3
B2597
1 1/4" (31.75mm)
4 1/2" (115mm)
CAT 1 - CAT 2
B2971
3/4" (19mm) 1" (25.4mm)

MINIMUM STEEL SPEC IS S1040 - ZINC PLATED

Useable length is from under the head to the edge of the hole