Shoulder Screw

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The diameter of the shoulder of shoulder screw is equal to or wider than its thread. Our shoulder screws are mostly customized. Precision shoulder screws can be made into slotted heads, Phillips heads, internal hexes and so on. The alignment accuracy of screw is extremely important during fastening, which means a very tiny tolerance of the shaft that Gaoyi can make reaches 0.02 meanwhile the concentricity of screw can reach 0.05.

Application of custom shoulder screw:

Shoulder screws are used in many industrial fields such as medicine, research, optical equipment, manufacturing and especially used in the following fields:

orthopedic instrument
surgery tool
laboratory apparatus
imaging experiment apparatus
equipment cabinet
molds
press machine

Materials selection of shoulder screw:

Stainless steel 18-8, 316 Stainless, Titanium alloy, Monel, Brass and Aluminum.

Parameter

Type	Shoulder Diameter	Thread Size	Shoulder Length
Inch	1/8'' to ½''	4-40 to 3/8-16	1/8'' to 1 ½''
Metric	1.8 mm to 25 mm	M1.2 to M24	4 mm to 70 mm