The letter following the reference
no. on the high grade mild steel U bolts denotes the normal finish
for that particular size, and are listed as follows :-
Z = Zinc Plated
D = Dacromet*
G = Hot spun galvanised (with oversize nuts)
Both *DACROMET and GEOMETt are high grade smooth surface finishes that combine the qualities
of zinc plating with the anti-corrosion properties of hot spun galvanising.
The relatively thin coating (5 - 8 microns) allows the use of standard
nuts to achieve full thread engagement in contrast to galvanising
where the nuts need to be tapped oversize. Salt spray resistance
test results are typically 300 to 600 hours.
The following lists show items manufactured on a regular basis with
a high proportion normally held in stock. However please check on
availability prior to ordering as manufacturing lead time can sometimes
extend to 4 weeks.