Collar Bolt

Collars bolts are utilized for removable pack heat exchangers, to holding the group set up, if by some stroke of good luck the channel should be taken out.

Roughly 25%, with at least four, of the rib studs, will be Collar Bolts, to keep the group set up. All Collar Bolts will have a square expansion past the strings for utilization of a wrench to forestall turning of the fastener when the nuts are fixed or taken out.

Product Range Standards Material Property Type Threads Grade Mechanical properties
4 MM to 16 MM As per costumers requirement. High Tensile 4.6 ,5.6 , 5.8 , 8.8 ,10.9 , 12.9 Metric, BSW, BSF, UNC, UNF, and as per costumers requirement. SAE 10B21, SAE 15B25, SAE 15B41, AISI 4140,4135, BS-EN8D As per requirement.
Mild Steel SAE1008 / SAE1010 / SAE 1018
Stainless Steel A2-70, A4-70,A2-50, A4-50 SS202, SS304, SS316, SS316L
Brass CUZN 40 / CUZN 37
Copper C 11000
Phosphorus Bronze CUSN 4, CUSN 5
Silicon Bronze CDA65100