T-head
Cheese with collar
T-head with square neck
T-head with shoulder
Tommy
Flat T-head
T-head with nibs
T-head countersunk
JB/T 1709-1991
T shaped square neck bolt
JB/T 1709-1991
T shaped square neck bolt with Racket
JB/T 8007.1A-1999
Ball head bolts-Type A
JB/T 8007.1B-1999
Ball head bolts-Type B
JB/T 8007.1C-1999
Ball head bolts-Type C
JB/T 8007.2-1999
T-bolts for quick discharging
