Features
Fasteners are the mechanical components that are most widely used to connect two or more components or members to ensure stability and safety of the structure. Their types include hexagon bolts, semi-round head screws, dormant bolts, minus screws/Phillip screws, socket head screws, circular/shaped flat washers and spring washers, full thread screws, half thread screws, coarse thread and fine thread bolts, etc. of different 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 feature excellent performance, standardized design, seriation and universal applications, and are popular across a broad range of machinery and equipment sectors.
Technical Parameters
-- Type: bolts, studs, screws, nuts, washers, retaining rings, pins, etc.
-- Nominal diameter: bolts 4 ~ 30mm, studs 3-56mm, screws 3-30mm, nuts and washers 1.6 ~ 64mm, round nuts 10 ~ 200mm, retaining rings 1 ~ 200mm, pins 2 ~ 50 mm.
-- Length: bolts 6 ~ 300mm, studs 10 ~ 500mm, screws 6 ~ 300mm, pins 4 ~ 200mm.
-- 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, 6.8, 8.8, 9.8, 10.9 and 12.9.
Nuts 4, 5, 6, 8, 9, 10 and 12.
-- Surface treatment: blackening, phosphating, yellow zinc coating, blue and white zinc-plating, black zinc-plating, hot-dip galvanizing, Dacromet, etc.
Lectotype
-- GB, ANSI, DIN, JIS, UNI and ISO.
English
212-210
211-210
210-210
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