Integrated Flange Design
The built-in flange acts as a washer, improving load distribution and reducing installation time.
ASME/ANSI B 18.2.1-8 Hex Flange Screws
- Standard: ASME/ANSI B 18.2.1-8
- Material: Stainless Steel
- Thread Size: 1/4 – 3/4
- Surface Treatment: Plain, Zinc Plated
- Min Order: 5000pcs
- Sample: Free sample (after quote)
- Delivery time: 30 – 45 Days
Product Overview
Product Application
ASME B18.2.1-8 Hex Flange Screws feature a hexagonal head combined with a built-in washer flange, eliminating the need for a separate washer. The flange increases the bearing surface area, helping distribute clamping force and reduce surface damage during tightening.
These screws are commonly used in automotive, machinery, industrial equipment, and structural assemblies where fast installation and reliable fastening performance are required.
Draw
Specification
ASME B18.2.1-8 Hex Flange Screws vs Standard Hex Screws
Built-in Washer Function
Hex flange screws include an integrated flange under the head, while standard hex screws require a separate washer to increase bearing area.
Installation Efficiency
The flange design reduces assembly steps and improves production efficiency in high-volume applications.
Load Distribution
Hex flange screws provide a larger contact area, helping reduce surface pressure and improve fastening stability.
Product Advantages
High Clamping Stability
The wider bearing surface helps prevent loosening and improves joint reliability.
Inch Series Standard
Manufactured according to ASME B18.2.1 dimensional requirements with UNC/UNF inch threads.
Common Questions
What is ASME B18.2.1-8 Hex Flange Screw?
ASME B18.2.1-8 Hex Flange Screw is an inch-series hex head screw with an integrated flange under the head, designed for improved load distribution and easier installation.
What is the advantage of a flange head screw?
The flange replaces a separate washer, increases bearing area, and helps improve joint stability.
What is the difference between Hex Flange Screws and Hex Cap Screws?
Hex flange screws have a built-in washer flange, while hex cap screws use a standard hex head and may require a separate washer.
Can ASME B18.2.1-8 Hex Flange Screw be customized?
Yes. Manufacturers can provide customized materials, coatings, lengths, thread specifications, and packaging according to project requirements.
