Overview
A DIN 7985 screw is a screw with a semicircular, lenticular head with a slot: PZ, PH or Torx and a threaded rod. The slot is designed for screwing in the screw with a screwdriver or bit. It can be used as a standalone element or in conjunction with washers and nuts of the appropriate diameter.
Strength class DIN 7985
The din 7985 semi-circular head screw is made of steel with a strength class from 4.8 to 10.9. From 8.8, the screw is considered high-strength. Only buy high-strength screws from trusted suppliers. It is made of alloy steel and such screws are used for critical projects where, in addition to high loads and static loads, it is subjected to constant vibration. Such bolts will be especially relevant in bridge construction, instrumentation, and in structures that are located near objects subject to vibration.
Fastening group DIN 7985
Depending on the material of manufacture, DIN 7985 is divided into the following fastening groups:
- High-strength fasteners
- Brass fasteners
- Stainless steel fasteners
- Polyamide fasteners
- Copper fasteners
Materials of manufacture
- The screw is made of various materials:
- Steel, which can be additionally coated with zinc or yellow zinc
- Brass - does not need to be coated
- Stainless steel A2 - does not require coating
- A4 stainless steel - no coating required
The scope of application
DIN 7985 screws are widely used in construction, industry and manufacturing. DIN 7985 screws are designed to connect lightweight metal structures and non-metallic materials. With the help of such fasteners, you can easily and quickly assemble various frames, both metal (frames for assembling small structures such as public transport stops, angels, various temporary structures) and wooden, such as upholstered furniture. The scope of application of the DIN 7985 screw also directly depends on the material of manufacture and the coating of the product:
- Galvanized steel offers good corrosion protection if the fastener is to be used in an aggressive environment.
- Brass is used if the system is subjected to frequent dynamic, vibration loads.
- Stainless steel allows the use of fasteners at significant temperature changes and in aggressive and humid environments.
The price of din 7985 screw in bulk can be found on the website Dinmark.com.ua.
