DIN 6330 Hexagon High Nut, Form B

DIN 6330 covers high hexagon nuts. The distinctive feature of the standard is a height-to-diameter ratio of 1.5 to 1, which ensures higher reliability of the threaded connection.

The increased height allows for a greater number of thread turns: this reduces the risk of thread stripping and increases the reliability of securing a bolt, screw, or threaded stud. The fasteners are used in various machine-building industries for high-strength fastening of assembly and unit components.

Materials and coatings

The nuts are made of carbon steel with a property class of not less than 10. This allows them to be used for loaded connections subject to intensive mechanical stress. The steel is often coated with a layer of zinc: galvanic zinc plating increases resistance to environmental exposure and protects the metal from corrosion.

High nuts are also made of stainless steel grades A2 and A4. Stainless steel is not subject to corrosion and can be used in aggressive environments. Product characteristics:

• Thread diameter: from M6 to M48.
• Width across flats: from 10 to 75 mm.
• Overall nut height: from 9 to 72 mm.
• Circle diameter: from 11 to 83 mm.

Similar high nuts are manufactured to the Russian standards GOST 15523-70 and GOST 5931-70, with possible minor deviations in dimensions.

Applications

This type of fastener is used for various machine-building purposes: assembling loaded components where precise positioning of parts, high resistance to mechanical loads, and resistance to environmental exposure are important. The fasteners are used in automotive manufacturing, instrument making, machine tool production, and other fields.

FLOK supplies hexagon high nuts DIN 6330 in wholesale batches, with delivery across Russia.

Dimensions of hexagon high nut DIN 6330

d	m	s	d₁
M8	12	13	9
M10	15	16	11.5
M12	18	18	14
M16	24	24	18
M20	30	30	22
M24	36	36	26
M30	45	46	32
M36	55	55	38
M42	65	65	44

Dimensions of hexagon high nuts DIN 6330 in mm

d	d₁	m	r	s
M6	7	9	9	10
M8	9	12	11	13
M10	11.5	15	15	16
M12	14	18	17	18
M14	16	21	20	22
M16	18	24	22	24
M18	20	27	25	27
M20	22	30	27	30
M22	25	33	29	32
M24	26	36	32	36
M27	29	40	37	41
M30	32	45	41	46

Designations:

d - nominal thread diameter

d₁ - diameter

m - nut height

r - radius

s - width across flats