ОSТ 1 31539-80 Screws with pan-convex head. Instead of normal 3176A. | Zavod mir
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Home > Product Catalog > Screws > OST 1 > ОSТ 1 31539-80 Screws with pan-convex head. Instead of normal 3176A.

Complies with standard 3176A.

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OST 1 31539-80 Screws With flat-convex head

< p> Instead of normal 3176А.

Complies with normal 3176А.

Description of the product design and its features

The design of the screw consists of a flat-convex head with a slot and a cylindrical threaded rod.

Material of manufacture: 14Х17Н2.

Thread tolerance fields :

– 6g for d -M 2 and 6e for d – M3 for screws made of steel 10 and 3OKhGSA under a metal coating and from corrosion-resistant steel under a metal and non-metallic coating;

– 6 h for screws made of steel 10, ZOKHGSA and aluminum alloy under a non-metallic coating.

Covering screws ;

– made of steel 10 with M2 thread – ЦЗ хз; with thread М3 and М4 – Ц6.хр; with thread more than M4 – Ц 9 хр;

– from steel ZOKhGSA with threads М3 and М4 – Ц 6, хр; CD 6 xp; with thread more than М4 – Ц9.хр; Kd 9, xp

– from steel 14X17N2 and 07X16N6-Sh – Chem.Pas;

– from aluminum alloy – An.Oks.hr.

< strong> Other types of screw coating – according to OST 1 31101-80

Designation example: Screw 6-24-Ts-OST 1 31539-80

Product Applications

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.


normal 3176A



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