DIN 186 T-head Bolt for Machine Tool Slots

The bolt for fastening to machine tool slots is manufactured to the European standard DIN 186. It is a narrow-application fastener used mainly in machine tool building, serving for reliable fixing with protection against self-loosening. A distinctive feature of this fastener is the T-shaped rectangular head, and the shank is additionally fitted with a square collar under the head to prevent rotation. It can have full or partial metric thread with a diameter from M6 to M48, and the overall length of the product can range from 30 to 200 millimeters.

Manufacturing features and materials

The DIN 186 standard covers high-strength T-slot bolts; they can be made from steel with property class 4.8, 5.8, 8.8, 10.9, 12.9. The choice depends on the operating conditions of the fastener and the load that will be applied to the joint.

The machine tool building industry places special requirements on the materials used in manufacturing fasteners. They must have high abrasion resistance and the ability to withstand corrosion, since the joint is constantly subjected to significant loads. The following material options are used in manufacturing DIN 186 fasteners:

• Steel of various property classes. The strongest bolts, of class 10.9 and 12.9, are used in heavily loaded joints, where they can withstand very high mechanical loads for a long time.
• Steel with a protective anti-corrosion coating. It is coated with a thin layer of zinc using an electroplating or thermal diffusion method. The zinc layer provides effective corrosion resistance, and the protected metal can be used under conditions of frequent humidity and temperature fluctuation.
• Stainless steel grades A2 and A4. Stainless steel contains chromium and other additives that make the metal resistant to corrosion. It can withstand prolonged contact with moisture and acidic environments, ensuring maximum durability.

When selecting bolts for installation in machine tool slots, the operating conditions of the machine in the production shop are taken into account. Fasteners with anti-corrosion protection and high mechanical strength will last for decades.

Applications and sales conditions

This highly specialized fastener is used in the manufacture of various types of machine tools, where it is installed in prepared holes for reliable fixing of parts. Bolts of this type can also be used in other industries, including mechanical engineering, automotive manufacturing, instrument making, and others. Equivalents of this type of fastener are manufactured to the European standard DIN 188 and the Russian GOST 13152-67. They are designed for installation in machined machine tool slots and meet the requirements for reliability and strength.

The fasteners comply with current standards.

Dimensions of DIN 186 T-head bolts for machine tool slots, mm

b	22	26	30	38	46
k	5.5	7	8	10.5	13
n	8	10	12	16	20
m	18	21	26	30	36
I	d
	M8	M10	M12	M16	M20
30
35
40
45
50
55
60
65
70
75
80
90
100
110
120
140