The Teflon (PTFE) Coated B7 Full Thread Stud Bolt is a high-strength fastener made from ASTM A193 Grade B7 alloy steel, featuring a continuous thread design and a specialized fluoropolymer coating. This combination offers two critical advantages: exceptional corrosion resistance against salt spray and chemicals, and a very low coefficient of friction. The coating prevents "nut-locking" or galling caused by rust, ensuring precise torque application during installation and effortless removal during maintenance. While it is the premier choice for offshore, chemical, and wastewater flange connections, it is important to note that the coating's effective temperature limit is approximately 260°C（500°F）, above which the PTFE may begin to degrade.
Product Data
Specification
M6
M20
M8
M22
M10
M24
M12
M27
M14
M30
M16
M36
M18
Specification
Size
Pitch
L1
L2
UNC
UNF
UNS
1/4
20
28
/
1’’-36’’
3’/6’/12’
5/16
18
24
/
1’’-36’’
3’/6’/12’
3/8
16
24
/
1’’-36’’
3’/6’/12’
7/16
14
20
/
1’’-36’’
3’/6’/12’
1/2
13
20
/
1’’-36’’
3’/6’/12’
9/16
12
18
/
1’’-36’’
3’/6’/12’
5/8
11
18
/
1’’-36’’
3’/6’/12’
3/4
10
16
/
1’’-36’’
3’/6’/12’
7/8
9
14
/
1’’-36’’
3’/6’/12’
1
8
12
8
1’’-36’’
3’/6’/12’
11/8
7
12
8
1’’-36’’
3’/6’/12’
11/4
7
12
8
1’’-36’’
3’/6’/12’
13/8
6
12
8
1’’-36’’
3’/6’/12’
11/2
6
12
8
1’’-36’’
3’/6’/12’
13/4
5
/
8
1’’-36’’
3’/6’/12’
2
4.5
/
8
1’’-36’’
3’/6’/12’
21/4
4.5
/
8
1’’-36’’
3’/6’/12’
21/2
4
/
8
1’’-36’’
3’/6’/12’
23/4
4
/
8
1’’-36’’
3’/6’/12’
3
4
/
8
1’’-36’’
3’/6’/12’
31/4
4
/
8
1’’-36’’
3’/6’/12’
31/2
4
/
8
1’’-36’’
3’/6’/12’
33/4
4
/
8
1’’-36’’
3’/6’/12’
4
4
/
8
1’’-36’’
3’/6’/12’
Applications
Pipe flanges: Pipe flanges where bolts need to connect flanges together.
Mechanical assemblies:Mechanical assemblies where parts need to be fixed with nuts on both ends.
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