DIN 7964 Captive Screw

DIN 7964 Captive Screw. The diameter of the smooth part of the captive screw’s shank is smaller than the minor diameter of the thread.

Materials:

• Steel: 5.6, 5.8, 8.8
• Coated steel: electroplated zinc, electroplated nickel
• Stainless steel: A1, A2, A3, A4, A5
• Non-ferrous metals, alloys: brass

DIN 7964 fasteners correspond to GOST 10337-80 and GOST 10338. The shape of the screw differs in that the shank diameter between the head and the threaded tip is smaller than the minor diameter of the thread. This section of the shank is smooth, without threading. This reduces metal consumption and improves the appearance of the fastening, particularly when installing screens.

DIN 7964

Fasteners are made from A1 to A5 steels — strong, stainless steels. After manufacturing, the fastener undergoes additional processing: for corrosion protection, the screw is coated with zinc or nickel.

Typical size range: thread diameter from M3 to M10, length from 10 to 80 mm. Fasteners of this profile are also made from carbon steel.

The captive screw (also called a captive bolt) is used where structural elements and parts need to be joined securely. The fastener is used by machine-tool, instrument-making and mechanical engineering companies, as well as in everyday applications — for design decoration, creating exteriors of buildings and structures. Separately, the fastener is used when installing protective metal screens on radiator heating systems in residential and industrial premises, offices, and healthcare, education and government institutions.

Captive screws are easy to install and remove. The head of the fastener can take various forms: a faceted nut, slots and other variants — this is used as an additional decorative element in interiors. Strength, reliability, durability and ease of installation and removal make this fastener versatile.

DIN 7964

Standard DIN 7964 corresponds to GOST 10337-80 and GOST 10338.

Description: captive screw. The diameter of the smooth part of the shank is smaller than the minor diameter of the thread.

Materials:

• Steel: 5.6, 5.8, 8.8
• Coated steel: electroplated zinc, electroplated nickel
• Stainless steel: A1, A2, A3, A4, A5
• Non-ferrous metals, alloys: brass

Dimensions of DIN 7964 captive screws: thread diameter from M3 to M10, length from 10 to 80 mm.