Fastener Data

MECHANICAL REQUIREMENTS FOR CARBON STEELEXTERNALLY-THREADED METRIC FASTENERS

Property Class DesignationNominal Size of ProductMaterial and TreatmentMechanical RequirementsProperty Class Identfication. Marking+ TME Logo/Symbol

Proof Load Stress, MPaTensile Yield Strength, MPa, Min.Tensile Ultimate Strength, MPa, Min.Prod. Hardness, Rockwell

Surface, Max.Core

Min.Max.

4.6M5-M100low or medium carbon steel225240400--B67B954.6

4.8M1.6-M16low or medium carbon steel, fully or partially annealed310340420--B71B954.8

5.8M5-M24low or medium carbon steel, cold worked380420520--B82B955.8

8.8M16-M72medium carbon steel, quenched and tempered60066083030N56C23C348.8

A325M Type1M16-M36A325M 8S

8.8M16-M36low carbon boron steel, quenched and tempered60066083030N56C23C348.8

A325M Type2A325M 8S

A325M Type3M16-M36atmospheric corrosion resistant steel, quenched and tempered60066083030N56C23C34A325M 8S3

9.8M1.6-M16medium carbon steel, quenched and tempered65072090030N58C27C369.8

9.8M1.6-M16low carbon boron steel, quenched and tempered65072090030N58C27C369.8

10.9M5-M20medium carbon steel, quenched and tempered830940104030N59C33C3910.9

10.9M5-M100medium carbon alloy steel, quenched and tempered830940104030N59C33C3910.9

A490M Type1M12-M36A490M 10S

10.9M5-M36low carbon boron steel, quenched and tempered830940104030N59C33C3910.9

A490M Type2M12-M36A490M 10S

A490M Type3M12-M36atmospheric corrosion resistant steel, quenched and tempered830940104030N59C33C39A490M 10S3

12.9M1.6-M100alloy steel, quenched and tempered9701100122030N63C38C4412.9