#812392

Diameter Thread Threads Length Grade Finish Weight
12.0000 (M12) Partial 1.25 30.0000 (30) ISO 12.9 Phos & Oil 0.1000
Diameter 12.0000 (M12)
Thread 1.25
Length 30.0000 (30)
Grade ISO 12.9
Finish Phos & Oil
Weight 0.1000

  • ISO 12.9


You call them Ferry Cap Screws, Counterbore Screws, or Double Hex Screws. We call them 12 Point Flange Screws. Used in many industries, they’re used primarily in diesel motors. The 12 points on the head prevent the edges from rounding out better than the hex head. Earnest carries Grade E9, stronger than Grade 8, to withstand rough conditions. This also allows for the screws to be more securely fastened and used more than once.

12 Point Flange Screw – E9-170M

  • 12 point design prevents head from rounding out
  • Able to replace any application currently using a socket head cap screw
  • Tensile strength of 170,000 psi min exceeds Grade 8 strength levels
  • Proof load strength of 140,000 psi min
  • Rockwell hardness of Rc 38/42
  • Diameter sizes range from 1/4” to 1 1/4
  • Meets ANSI B18.2.1 standards
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