DIN 7977 Taper Pin with Threaded End

The DIN 7977 taper pin with threaded end is made of hardened and stainless steel. This fastener is produced in fixed lengths and is used in instrument manufacturing and mechanical engineering, and less commonly in other industrial sectors. In mechanical engineering and instrument manufacturing, the pin is used for precise fixing of joined parts and surfaces. In the Russian Federation, the equivalent is GOST 9465-79 — an exact match to the German DIN standard. The fastener complies with the international standard ISO 8737. Equivalent: ISO 8737.

DIN 7977

Taper pins are used where consistent fastening accuracy is required, unaffected by prolonged operation of the joined parts or assemblies. The DIN 7977 pin is a smooth cylindrical rod with two sections of different diameters: one of which has a cut metric thread. After the thread, the pin ends in a conical tip. During installation, this section enters a drilled recess in the attached part or surface and secures the joint. The pin is made of hardened steel, as well as A2 and A4 grade steel.

The taper pin has a number of advantages over its cylindrical counterpart. First, it can be reused in detachable joints. Second, repeated use does not reduce fastening accuracy.

DIN 7977

l (mm)	d
	6	8	10	12	16	20	25	30
50
55
60
75
80
85
100
120
130
140
160
190
220