Countersunk Bolts Manufacturer in China

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

Flat Head Cap Screws

Flat Head Socket Cap Screws are designed to be seated in countersunk holes, and align flush with the surface of the assembly when installed. Flat head socket cap screws have a flat top surface, an indented hex and a conical bearing surface with a head angle of 82°. Flat head socket cap screws are commonly used in machine parts, die fixturing, and clamping.

Flat Head Cap Screws Diameters

Flat Head Cap Screws are available from Zhenkun factory with Imperial/US diameters that range from #0 to 6 and with Metric diameters that range from M1.6 to M90. The length of Flat Head Cap Screws is usually measured from the point to the underside of the head.

US/Imperial diameters

• •#0   •#1   •#2   •#3   •#4   •#5   •#6   •#8   •#10   •#12   

• •#14   •3/16   •1/4   •5/16   •3/8   •7/16   •1/2   •9/16   •5/8   •3/4   

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

Metric diameters

• •M1.6   •M2   •M2.5   •M2.6   •M3   •M3.5   •M4   •M5   

• •M6   •M6.3   •M7   •M8   •M10   •M12   •M14   •M16   

• •M18   •M20   •M22   •M24   •M48   •M90   

Flat Head Cap Screws Lengths

Flat Head Cap Screws are available from Zhenkun factory with lengths that range from 1/8 to 19.

US/Imperial lengths

• •1/8   •5/32   •3/16   •1/4   •9/32   •5/16   •11/32   •3/8   •13/32   •7/16   •1/2   •9/16   •5/8   •11/16   •3/4   •7/8   •15/16   •1   •1 1/8   •1 3/16   •1 1/4   •1 3/8   •1 1/2   

• •1 5/8   •1 11/16   •1 3/4   •1 7/8   •2   •2 1/8   •2 1/4   •2 3/8   •2 1/2   •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 1/4   •6 1/2   •6 3/4   •7   •7 1/2   •8   •8 1/2   •9   •9 1/2   •10   •10 1/2   •11   •12   •12 1/2   •13   •14   •15   •16   •17   •18   •19   

Metric lengths

• •2   •3   •4   •5   •6   •8   •9   •10   •12   •13   •14   •15   •16   •18   •20   •22   •23   •24   •25   •26   

• •27   •30   •32   •33   •34   •35   •38   •40   •45   •50   •55   •60   •65   •70   •75   •80   •85   •90   •100   •105   

• •110   •120   •125   •130   •140   •150   •155   •160   •170   •180   •200   •220   •240   •250   •260   •280   •300   •400   

Flat Head Cap Screws Materials

Flat Head Cap Screws are available from Zhenkun factory in materials that range from Steel to Plastic

• •Steel   •Grade 2   •Grade 5   •ASTM A449   •ASTM A574   •Grade 8   •Grade A   •Grade B   •Grade B6   •Grade B7   •Grade B8   •Grade B8M   •Grade B16   •Class 4.8   •Class 8.8   •Class 9.8   

• •Class 10.9   •Class 12.9   •300 Stainless (A1,A2, 18-8,304,310 etc.)   •316, 317, A4 Stainless   •400 Stainless (405, 410,416,420,430 etc.)   •Duplex Stainless (2205, Ferralium etc.)   •Ni-Cu Alloy (Monel, K-Monel, etc.)   •Superalloy (Inconel, Hastelloy, Alloy 20)   •Titanium   •Copper   •Aluminum   •Brass   •Phosphor Bronze   •Silicon Bronze   •Nylon   •Plastic   

Flat Head Cap Screws Finishes

Flat Head Cap Screws are available from Zhenkun factory in finishes or coatings that range from Plain to Silver

•    Plain   Zinc/Clear   Zinc/Yellow   Zinc/Green   Zinc/Black   Galvanized   Aluminum zinc flake (Dacromet, Magnigard, Doerken)   Anti-corrosion (Stalgard, Climaseal, XLCoat)   Black Oxide   Brass Plated

•    Cadmium   Cadmium/Yellow   Chromate Conversion (Iridite, Alodine)   Chrome   Fluoropolymer (Xylan, Fluorokote, Teflon)   Nickel   Painted   Passivated   Phosphate   Silver