ISO 7380 Button Head Screw (Hex Socket)

The ISO 7380 button head screw is a fastener that complies with the international ISO standard. The hex socket allows the joint to be tightened with a hex key or a Torx tool. The button-shaped head ensures a tight fit against the material surface.

Features of the ISO 7380 screw

This fastener is used where the product’s appearance matters: the convex head surface looks neat. The design includes a recess for the hex socket, allowing the part to be fastened in hard-to-reach places.

The property class of ISO 7380 screws ranges from 4.8 to 12.9. For critical joints, high-strength parts or parts made of A2/A4 stainless steels with increased corrosion resistance are used.

The size range includes screws with thread from M3 to M16 and length from 4 mm to 90 mm. Zinc plating may be used for corrosion protection.

Characteristics of the ISO 7380 screw

• manufactured to the international ISO standard;
• convenient installation and removal with a hex key;
• joint strength;
• a wide range of sizes and material versions;
• a smooth, button-shaped head surface.

The ISO 7380 screw is used in furniture manufacturing, mechanical engineering, construction and other industries.

Applications and equivalents

The ISO 7380 standard has equivalents among Russian and European standards. In Russia this is GOST R ISO 7380-1-2014; a close equivalent is also GOST R 50066-2009; European equivalents are DIN 7991 and DIN 6912.

When choosing an equivalent, it is important to consider differences in tolerances and thread dimensions to ensure component compatibility and assembly reliability.

When selecting fasteners, pay attention to the following parameters:

• availability of certificates of conformity to GOST and ISO;
• quality of the thread and the internal key recess;
• material (carbon or stainless steel);
• the product’s property class;
• presence of a protective coating.

Where to buy ISO 7380 screws

FLOK supplies ISO 7380 button head screws with documentation confirming compliance with the specified strength and material parameters.

Dimension table for ISO 7380-1/-2 button head screws, in mm

d	M3	M4	M5	M6	M8	M10	M12	M16
dk	5.7	7.6	9.5	10.5	14	17.5	21	28
dc	6.9	9.4	11.8	13.6	17.8	21.9	26	-
k	1.65	2.2	2.75	3.3	4.4	5.5	6.6	8.8
s	2	2.5	3	4	5	6	8	10
ISR	T10	T20	T25	T30	T40	T50	T50	-

Designations:

d - nominal thread diameter

dk - diameter of the screw’s button head

dc - diameter of the button head with collar

k - head height

s - width across flats for hex key

ISR - size for Torx key