Stainless steel expansion screw: Introduction to fixing principle
Stainless steel expansion screws are fixed using the wedge-shaped slope principle, and the fixing effect is achieved through frictional grip force. A screw consists of a screw and an expansion tube. When the nut is tightened, the screw moves, creating a large positive pressure to achieve a fixed effect. Spring washers and flat washers respectively play a role in preventing nut loosening and evenly distributing pressure.
Overview of specifications for stainless steel expansion screws
The specifications of stainless steel expansion screws include different grades and materials, and the appropriate specifications should be selected according to the needs. Common specifications include 6 × 60, 6 × 80, 6 × 120, and 6 × 150.
Widely applicable
Due to its advantages, stainless steel expansion screws are widely used in various decoration occasions, such as fastening air conditioners, fixing frameless balcony windows, etc.
Tips for dealing with rusting of stainless steel expansion screws
Vibration: Use a hammer to gently shake the handle of the wrench to unscrew rusty screws.
Knocking: Use a square top iron hammer to tap the rusted nut edge to loosen it.
Barbecue: Use gas welding and oxidizing flame to heat the screws, then drip a little oil on them to expand and quickly shrink, making it easier to unscrew the nuts.
Welding: Weld an iron block onto the broken wire using electric welding to facilitate the unscrewing of the screw.
Impact: Use a hammer and a completely flat screwdriver to impact a V-shaped groove at the top of the screw, then impact in the direction of the screw being unscrewed, and use a wire pliers to unscrew the screw.
The above techniques can be selected and used according to specific situations to address the problem of stainless steel expansion screws rusting.