DIN 444 Eye Bolt

Eye bolts are manufactured to the German standard DIN 444. These fasteners have full or partial metric thread with a diameter from M5 to M36, and the shank length can range from 25 to 300 mm. Their distinguishing feature is a metal eye: it can be used to attach various structures together with anchors. Fasteners of this type are widely used in industry, serving as an auxiliary element for fastening machine parts, covers, and more.

Manufacturing features and materials

The DIN 444 eye bolt is a high-strength fastener designed for heavy mechanical loads. Instead of a traditional hexagon head, it is fitted with a metal loop (eye) that allows various parts to be attached. The threaded part of the bolt is installed into a prepared hole, threaded or unthreaded; in the latter case it is secured with nuts and washers.

The eye bolt is securely fixed in the material thanks to its thread, and it can withstand heavy loads and reliably hold structures to the base. This gives it wide application in industry, construction, and beyond. The following types of materials are used in manufacturing these fasteners:

• Steel of property classes 4.8, 5.8, 8.8, 10.9, 12.9. High-strength bolts can be used in critical joints where heavy mechanical loads must be withstood.
• Stainless steel A2 and A4. It contains chromium, nickel and other elements that enable the metal to resist corrosion over a long period. Stainless steel products can be used in conditions of high humidity or chemically aggressive environments.
• Brass. This non-ferrous metal alloy is not subject to corrosion and is not affected by high humidity.

Similar fasteners are manufactured to GOST 14724-69 and GOST 14725-69. When selecting, attention should be paid to the metal strength, product grade and dimensional parameters, as the equivalents may not match completely. Eye bolts with trapezoidal thread are manufactured to GOST 14725-69. They have certain usage features.

Applications

Thanks to their characteristics, DIN 444 eye bolts are widely used in industry and construction. They are used for joining machine parts and components of industrial equipment, and are applied in various sectors. For example, they are widely used in the automotive industry for attaching parts and securing various covers.

This type of fastener is also widely used in construction. It is used together with anchors to attach various parts and structures to concrete walls and floor slabs. This type of fastener can also be used in rigging operations and when installing various fixtures.

Main dimensions of eye bolts

d2	6	8	10	12	16	18	22
d3 (max)	14	18	20	25	32	40	45
s (max)	7	9	12	14	17	22	25

L (mm)	b (mm)	d
		M6	M8	M10	M12	M16	M20	M24
60	45
60	50
70	50
80	55
100	80
120	100
150	100
160	130
180	150
200	180

d₂	6	8	10	12	16	18	22
d₃	13.57	17.57	19.48	24.48	31.38	39.38	44.38
s min	6.85	8.85	11.82	13.82	16.82	21.79	24.79
b≤125	18	22	26	30	38	46	54
l	d₁
	M6	M8	M10	M12	M16	M20	M24
30
35
40
45
50
55
60
65
70
75
80
90
100
110
120
130
140
150