Type A Without lock nut, with knob.
Type AK With lock nut, with lifting knob.
Type D Without lock nut, without knob
Type DK With lock nut, without knob
Identification 1 Pin without internal thread.
Identification 2 Pin with internal thread.
GN 313 Spring Bolt, Steel, Plastic Knob
The plunger of these spring bolts, GN313, does not protrude in the inoperative position.
They can be operated manually or in Type D and DK mechanically (pneumatic cylinder, cam plate, etc.) when it will protrude only as long as it is operated.
Using the internal thread at identification number 2 on the pressure side, special pressure bolts or a rod arrangement can be operated, for example.
Threaded socket - Steel ST, blackened.
Plunger - Stainless Steel NI AISI 303, chemically nickel plated
Knob - Plastic (Polyamide PA), black, matt, not removable.