■ INCH SERIES 
The length of the stud bolt measured parallel to the axis, is the distance from first thread to first thread.

First thread is defined as the intersection of the major diameter of the thread with the base of the point. 

■ METRIC SERIES 
The length of the studbolt, measured parallel to the axis, is the distance from each stud bolt, including the end 

 point.  

■ STUD BOLT FROM STOCK 

  -ASTM  A193 Gr B7/B7M

  -ASTM  A193 Gr B16

  -ASTM  A193 Gr B8/B8M/B8M CL2

  -ASTM  A320 Gr L7/L7M

  -ASTM  A320 Gr B8/B8M/B8M CL2 

  -ASTM  A307 Gr A/B

  -ASTM  A325

  -ASTM  A490

  -ASTM  A453 660A/660B/660C/660D

  -ASTM A182 F53, UNS 32750 

  -ASTM A182 F55, UNS 32760  

■ PRODUCT DIMENSTIONAL STANDARDS 

ANSI B16.5 (DIN 976)                                                                                                                                  (Unit:mm)

ANSI B16.5 (DIN 976)                                                                                                                                  (Unit:inch)