Unhardened taper pins with internal thread (ISO 8736 : 1986) English version of DIN EN 28 736
This International Standard specifies the characteristics of unhardened taper pins with internal thread, and metric dimensions and nominal diameters, d1, from 6 to 50 mm inclusive.

Check out other specifications
TECHNICAL SUPPLY CONDITIONS FOR THREADED STEEL FASTENERS PART 2 TOLERANCES FOR FASTENERS — BOLTS, SCREWS, STUDS AND NUTS — PRODUCT GRADES A, B AND C
Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
SURFACE DISCONTINUITIES ON BOLTS, SCREWS, AND STUDS IN FATIGUE APPLICATIONS
Hexagon flange bolts
Taper Key Torque Transmission – Parallel Keys – Dimensions and Application
High-strength structural bolting assemblies for preloading Part 6: Plain chamfered washers