Timber bolt, are also called Round Head 4 Fins or Nubs Neck Timber Bolts, Mushroom Head Fin Neck Nib Marine Construction Bolts with black, zinc plated, HDG, Dacromet, Nickel, Chrome,Geomet 500B, Magn
Highway guardrail splice bolt with ASTM A307 Gr.A with HDG, size: 5/8,
the length: 1 1/4-18"
ACME threads hex flange bolts are made of carbon steel, finish is hot dip galvanized. The threade is special, ACME threads.
