Features
Fasteners are mechanical elements used to connect two or more parts to maintain their relative positions. The types include hexagon bolts, double head bolts, square bolts, nuts, screws, circular/shaped flat washers, full thread screws, half thread screws, coarse thread and fine thread bolts, etc. with various types and specifications. The fasteners are made of low-carbon steel, high-strength alloy steel, stainless steel etc. by processing like threading, heat treatment and surface treatment. They stand out for compact structure, easy disassembly, standardization, seriation and universalization, etc. The fasteners are widely applied in machinery, energy, automobile, construction and other industries.
Technical Parameters
-- Type: bolts, studs, screws, nuts, washers, etc.
-- Nominal diameter: bolts 5 ~ 64mm, studs 3-56mm, screws 3-64mm, nuts and washers 1.6 ~ 64mm, round nuts 10-200mm.
-- Length: bolts 4~ 500mm, studs 10 ~ 500mm, screws 4 ~ 300mm.
-- Thread type: Metric, Imperial, American, etc.
-- Material: carbon steel, alloy steel, stainless steel, copper, etc.
-- Strength grade: bolts 3.6, 4.6, 4.8, 5.6, 5.8, 6.6, 8.8, 9.8, 10.9 and 12.9.
Nuts 4, 5, 6, 8, 9, 10 and 12.
-- Surface treatment: natural color, galvanizing, blackening, nickel plating, chrome plating, hot-dip galvanizing, phosphating, etc.
Lectotype
-- GB, ANSI, DIN, BS, JIS, UNI and ISO.
English
212-212
211-212
210-212
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