DIN 939 Threaded Stud

The GOST 22034 threaded stud (equivalent to DIN 939) is used in installation and assembly operations. For example, engine plants use these studs to fasten cylinder heads to the engine block. The part is convenient in joints that require frequent assembly and disassembly.

DIN 939 threaded studs are manufactured in accordance with the German standard DIN 939 and the Russian GOST 22034 and GOST 22035. They are used with washers and nuts. In terms of strength, they are on par with comparable metal fasteners, and in some cases exceed them. The material is carbon steel in property classes 10.9, 8.8, 5.8, 4.8.

DIN 939 Threaded Stud

In machine building, engine manufacturing and other industries, the DIN 939 threaded stud is a widely used fastener. Fastener manufacturers produce studs made of steel with anti-corrosion treatment (galvanic zinc plating) or of stainless steel. The screw-in end of the stud has a diameter of 1.25. For certain applications, DIN 939 studs are made of non-ferrous metals and alloys.

The GOST 22034 threaded stud is used where fastening requires repeated assembly and disassembly, for example when fastening a cylinder head to the engine block. The fastener is versatile in application. To allow the stud to be shortened, one end has extra thread length — the excess can be cut off with an angle grinder or a hacksaw.

Foreign-made equipment with assemblies fastened by studs is imported into the country. DIN studs are used for the repair and refurbishment of such equipment. Domestic fastener manufacturers have adapted their product standards to foreign requirements: the thread of the DIN 939 stud matches the thread of bolts with metric threads.

Buy DIN 939

FLOK supplies threaded studs of various types and applications to order, based on customer requests.

Threaded stud DIN 939, GOST 22034

Made of zinc-plated steel or stainless steel. Used in assembly and installation work, especially convenient for frequent assembly and disassembly of a structure. If needed, the stud can be shortened with an angle grinder or a hand hacksaw. Used with nuts and washers of the same diameter. The thread of the DIN 939 stud matches the thread of standard metric bolts.

b1	7.5	10	12	15	20	25	30
b2	18.0	22	26	30	38	46	54

L (mm)	d Material
	M6/A4	M8/A4-80	M10/A4-80	M12/A4-80	M16/A4-80	M20/A4-70	M24/A4-70
25
30
35
40
50
60
70
80
100