Description of the design of the product, its features

The screw design consists of a flat head with a slot and a threaded rod. The requirements for the accuracy class are imposed on the products.

The material of manufacture must have the accuracy class A

Steel grade / hardness class А2-20Н, А4-20Н, А5-20Н

To use screws in an aggressive environment, various types of coatings are used in accordance with:

GOST R ISO 4042-2009 Fasteners. Electrolytic coatings “

GOST R ISO 10683-2013 ” Fasteners. Non-electrolytic zinc-lamellar coatings “

GOST R ISO 3506-4-2009 ” Mechanical properties of fasteners made of corrosion-resistant stainless steel. Part 4. Self-tapping screws “

ISO 16048 Passivation of fasteners made of corrosion-resistant stainless steels

Self-tapping screws GOST R ISO 1481 – ST3,5 x 16 – St – R

Self-tapping screw GOST R ISO 1481 – ST3.5 x 16 – A4-20H-R

Product scope

These screws are used in many industries. An increased demand for products, in particular, is observed in the aircraft and mechanical engineering industries, as well as in construction, energy and metalworking, where they are used for reliable fastening of parts and metal structures.

ANALOGUES

DIN 7513 B zinc plated self-tapping screw with cylindrical head

DIN 7513 F countersunk self-tapping screw