+91 22 66157017

[email protected]

  • Fasteners for almost all your needs


  • TorqBolt provided Fastening Solutions with Desired Finish

  • Superior Washers for Better Fastening




ASTM F568 Specification

astm-a193-grade-B8-class-2-BoltsASTM F568 is standard Specification for metric size  bolts, screws and studs that are used in general engineering applications. It is officially titled: Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners. It defines mechanical properties for fasteners that range from M1.6 to 100 in diameter

For quick Quote on F568 Bolts/Screws/Studs, please contact our Sales team.

Related Keywords for ASTM F568 Specification : Astm f568 Specification,astm F568 Bolts,astm f568, bolts standard,etc.

Grades Material Description

Grade 4.6 Low or medium carbon steel
Grade 4.8 Low or medium carbon steel; fully or partially annealed
Grade 5.8 Low or medium carbon steel; Cold worked
Grade 8.8 Medium Carbon Boron Steel ; Quenched & Tempered
Low carbon Grade 8.8 Low Carbon Boron Steel ; Quenched & Tempered
Grade 8.8.3 Atmospheric corrosion resistant steel ; Quench and Tempered
Grade 9.8 Medium Carbon Boron Steel ; Quenched & Tempered
Low carbon Grade 9.8 Low Carbon Boron Steel ; Quenched & Tempered
Grade 10.9 Quenched & Tempered ; Alloy Steel
Low Carbon Grade 10.9 Low Carbon Boron Steel ; Quenched & Tempered
Grade 10.9.3 Atmospheric corrosion resistant steel ; Quench and Tempered
Grade 12.9 Quenched & Tempered ; Alloy Steel

 

Markings & Mechanical Prperties

Markings & Mechanical Prperties
Grades Markings Size Range PS [MPa] YS (min) [MPa] TS (min) [MPa] Hardness [Rockwell]
Class 4.6 grade 4.6 bolts 5–100 225 240 400 B67–95
Class 4.8 grade 4.8 bolts 1.6–16 310 340 420 B71–95
Class 5.8 grade 5.8 bolts 5–24 380 420 520 B82–95
Class 8.8 grade 8.8 bolts 0.050% 600 660 830 C23–34
Low carbon Class 8.8 low carbon grade 4.6 bolts 17–72 600 660 830 C23–34
Class 8.8.3 grade 8.8.3 bolts 17–72 600 660 830 C23–34
Class 9.8 grade 9.8 bolts 1.6–16 650 720 900 C27–36
Low carbon Class 9.8 low carbon 9.8 bolts 1.6–16 650 720 900 C27–36
Class 10.9 grade 10.9 bolts 5–100 830 940 1040 C33–39
Low Carbon Class 10.9 low carbon grade 10.9 5–100 830 940 1040 C33–39
Class 10.9.3 grade 10.9.3 bolts 5–100 830 940 1040 C33–39
Class 12.9 grade 12.9 bolts 1.6–100 970 1100 1220 C38–44

 

 

Copyright © 2014 TorqBolt. All rights reserved. | Sitemap