Security Screws / Tamper-Resistant Screws (Ultra-Lok, Penta-Plus, etc.) Manufacturer in China

Zhenkun offer Security Screws / Tamper-Resistant Screws (Ultra-Lok, Penta-Plus, etc.) in different sizes & standards.Security Screws / Tamper-Resistant Screws (Ultra-Lok, Penta-Plus, etc.) are also available in different materials and grades.Security Screws / Tamper-Resistant Screws (Ultra-Lok, Penta-Plus, etc.) used for construction materials for projects such as docks, bridges, highway systems, mechanical equipment,and homes, among other things.

Security Screws

Security Screws, also known as Tamper-Resistant Screws, can be either machine screw style or self-tapping style, but they have a unique drive-style requires a special tool in order to tighten or loosen.

Security Screws Diameters

Security Screws are available from Zhenkun factory with Imperial/US diameters that range from #0 to 2 and with Metric diameters that range from M1 to M24. The length of Security Screws is usually measured from the point to the underside of the head.

US/Imperial diameters

• •#0     •#1     •#2     •#3     •#4     •#5     •#6     •#7     •#8     •#10     

• •#12     •#14     •1/8     •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     •2     

Metric diameters

• •M1     •M1.6     •M2     •M2.5     •M3     •M3.5     

• •M4     •M4.2     •M5     •M6     •M7     •M8     

• •M10     •M12     •M14     •M16     •M20     •M24     

Security Screws Lengths

Security Screws are available from Zhenkun factory with lengths that range from 1/8 to 14.

US/Imperial lengths

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

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

• •4     •4 1/4     •4 1/2     •4 3/4     •5     •5 1/2     •6     •6 1/4     •6 3/4     •7     •7 3/4     •8     •8 1/2     •9     •10     •12     •14     

Metric lengths

• •3     •4     •5     •6     •7     •8     •9     •10     •11     •12     •13     •14     •15     •16     

• •17     •18     •20     •21     •22     •24     •25     •28     •29     •30     •32     •35     •38     •40     

• •45     •50     •55     •60     •65     •70     •80     •85     •90     •115     •170     •180     •230     •260     

Security Screws Materials

Security Screws are available from Zhenkun factory in materials that range from Steel to Plastic

• •Steel     •Grade 2     •Grade 5     •Grade 8     •Class 4.8     •Class 10.9     •300 Stainless (A1,A2, 18-8,304,310 etc.)     

• •316, 317, A4 Stainless     •400 Stainless (405, 410,416,420,430 etc.)     •Superalloy (Inconel, Hastelloy, Alloy 20)     •Aluminum     •Brass     •Silicon Bronze     •Plastic     

Security Screws Finishes

Security Screws are available from Zhenkun factory in finishes or coatings that range from Plain to Tin

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

• •Black Oxide     •Cadmium     •Chrome     •Nickel     •Painted     •Passivated     •Phosphate     •Tin