Metric DIN 479 square head bolts with short dog point are externally threaded fasteners with a square shaped head with a washer face. The head configuration of the DIN 479 square head bolts provides a greater larger surface area and hence these bolts are used mostly where larger bearing surfaces are required. DIN 479 square head bolts can be partially threaded with thread length dependent on the diameter and length of the bolt. Bhalla Fasteners is the leading manufacturer, supplier and exporter of Din479 shead bolts with short dog point in USA ,UK ,Poland, Germany , Austrailia, Ireland, and other European countries.
l - length of bolt
d - the nominal diameter of the thread
k - head height
e - the diameter of the circumscribed circle (not less than)
s - head width
a1 - length undercut
dp - diameter of the ejector
r - Head radius
k´ - minimum size of the head on the key
z1 - length of the ejector