Square Head Bolts Manufacturer in China

Zhenkun offer Square Head Bolts in different sizes & standards.Square Head Bolts are also available in different materials and grades.Square Head Bolts used for construction materials for projects such as docks, bridges, highway systems, and homes, among other things.

Square Head Bolts

Square Head Bolts were once the most common form of bolt, until they were replaced by hex head bolts. They are covered under ANSI Standard B18.2.1 and are now most commonly used for aesthetic purposes to provide a rustic look .

Square Head Bolts Diameters

Square Head Bolts are available from Zhenkun factory with Imperial/US diameters that range from #1 to 6 and with Metric diameters that range from M6 to M30. The length of Square Head Bolts is usually measured from the point to the underside of the head.

US/Imperial diameters

• •#1   •#2   •#3   •#4   •#5   •#6   •#10   •1/8   •1/4   •5/16   

• •3/8   •7/16   •1/2   •5/8   •3/4   •7/8   •1   •1 1/8   •1 1/4   •1 3/8   

• •1 1/2   •1 3/4   •2   •2 1/4   •2 1/2   •3   •4   •5   •6   

Metric diameters

• •M6   •M12   

• •M14   •M20   

• •M24   •M30   

Square Head Bolts Lengths

Square Head Bolts are available from Zhenkun factory with lengths that range from 7/16 to 19.

US/Imperial lengths

• •7/16   •1/2   •5/8   •3/4   •7/8   •1   •1 1/4   •1 3/8   •1 1/2   •1 5/8   •1 3/4   •2   •2 1/4   •2 1/2   •2 5/8   •2 3/4   •2 7/8   •3   

• •3 1/8   •3 1/4   •3 1/2   •3 3/4   •4   •4 1/4   •4 1/2   •4 3/4   •5   •5 1/4   •5 1/2   •5 3/4   •6   •6 1/2   •6 3/4   •7   •7 1/2   •8   

• •8 1/2   •9   •9 1/2   •10   •10 1/2   •11   •11 1/2   •12   •12 1/2   •13   •13 1/2   •14   •15   •16   •17   •18   •19   

Metric lengths

• •50   •70   •75   

• •80   •90   •125   

• •140   

Square Head Bolts Materials

Square Head Bolts are available from Zhenkun factory in materials that range from Steel to Plastic

• •Steel   •Grade 2   •Grade 5   •ASTM A449   •Grade 8   •Grade A   •Grade B7   •Grade B8M   •Class 9.8   

• •Class 10.9   •Class 12.9   •300 Stainless (A1,A2, 18-8,304,310 etc.)   •316, 317, A4 Stainless   •Brass   •Silicon Bronze   •Iron   •Nylon   •Plastic   

Square Head Bolts Finishes

Square Head Bolts are available from Zhenkun factory in finishes or coatings that range from Plain to Tin

•    Plain   Zinc/Clear   Zinc/Yellow   Zinc/Green   Zinc/Black   Galvanized

•    Black Oxide   Cadmium   Chrome   Phosphate   Tin