Bi Flex Screws Stainless Steel Self Tapping Screw 304/316

Bi Flex Screws Stainless Steel Self Tapping Screws Introduction

Bi flex screws are also known as bi metal screws. These bi flex screws have excellent anti corrosion property because of the stainless steel head and thread. And the diamond point is made from hard carbon steel, so this screw has great tapping capacity. These bi flex screws stainless steel tapping screws are mostly used in refrigeration equipment, photovoltaic panel, marine equipment, machinery manufacturing, roofings and other fields.

Bi Flex Screws Stainless Steel Self Tapping Screws Description

Diameter        2.9            3.5                3.9             4.2             4.8         5.5           6.3               8

pitch               1.1           1.3                 1.3            1.4              1.6         1.8           1.8              2.1

h                    0.4            0.6                 0.6            0.8              0.9           1              1              1.2

dc              5.8- 6.3      7.6- 8.3        7.6- 8.3     8.1 - 8.8     9.8- 10.5    10- 11    12.2- 13.5   16.7- 18

k                2.5- 2.8       3- 3.4           3- 3.4        3.6- 4.1    3.8- 4.3    4.8- 5.4     5.3- 5.9       6.4- 7

s                3.82- 4      5.32- 5.5      5.32- 5.5     6.78- 7     7.78- 8     7.78- 8     9.78- 10    12.73- 13

Washer: 14 mm, 16 mm, 19 mm grey or black EODM washer

Material: stainless steel 304 / 316 （head and thread） hard carbon steel (tapping point )

Customization: nibs under head, head mark, color package with logo and brand

Advantage of Elco Bi Flex Long Thread Stainless Steel Self Drilling Screws

• the alloy steel point can greatly improve work efficiency - save time 50%
• the length of the elco bi flex screws can up to 300 mm
• the anti corrosion capacity of stainless steel part can up to 50 years
• Ruspert surface teatment can provide excellent anti corrosion property
• the quality is close to Taiwan quality, but price is cheaper about 20%

Advantages

• We have the Taiwan qualtity machines to drawing wire, making screws, threading, heat treatment and digital monitoring
• There are professional staffs and equipment to test the quality of screws before packing
• We have our own science and innovation department to meet the demand of global market
• Our factory is located in Tianjin, it is next to Tianjin port. So the transportaion is convenient and charges are cheaper