Description:Heavy hex nut is larger and thicker that finished hex nut, mostly assemblied with heavy hex bolt or high strength bolts. Hot dip galvanized heavy hex nut need be tapped when assmebling with hot dip galvanized bolt.
Thread: M, UNC, UNF Head Mark: HR
Finish: plain ( self colour), black, zinc plated ( black, yellow, white, blue-white), HDG, Dacromet, Nickel, Chrome,Geomet, Magni, mechnical galvanized, painting, teflon, etc.
Strictly complies with ISO9001:2008 system, Each production process be well managed through self inspection, routing inspection by our workers. Our test equipments include: tensile machines, hardness tester, salt spray tester, Image measurement instrument, caliper, GO & NO-GO guage, etc.
Test and issue Material Test Report and Inspection Report by Hengrui before shipment to guarantee the product quality. The test report from the third parts are also avaliable as customer's requirments.
Contact: Monica Song
Add: Rm 208, block 76, Hongyin Plaza, No.1755, Nanlu Road, Pudong, Shanghai