JX-22ZXG553-M3-6-ST, Steel High-Profile Knurled-Head Thumb Screws, Electroplating surface treatment black zinc

Steel Shoulder Screws for Binding Barrels

A shoulder adds strength to handle side or shear loads. Pair these screws with a barrel you already have or couple them with a different barrel to create a custom fastener. Zinc plating provides corrosion resistance in wet environments. Screw length is measured from under the head.

Material: low carbon steel, medium carbon steel and high carbon steel, and alloy steel.

1. Low carbon steel C%≤0.25% is usually called A3 steel. Also known as 1008, 1015, 1018, 1022, etc. Mainly used for 4.8-grade bolts and 4-grade nuts, small bolts, and other products without hardness requirements. (Note: Drill-tail nails are mainly used for 1022 material.)

2. Medium carbon steel 0.25% <C%≤0.45% Usually called No. 35, No. 45 steel, also 1035, CH38F, 1039, 40ACR, etc. Mainly used for 8-grade nuts, 8.8-grade bolts, and 8.8-grade hexagonal products.

3. Alloy steel: add alloying elements to plain carbon steel to increase some special properties of steel: such as 35, 40 chromium-molybdenum, SCM435, and 10B38.

Steel Shoulder Screws for Binding Barrels is simply understood as non-standard screw with two or more steps. The step screws, which are generally not available from stock, are produced only through open molding. Adopting new high-precision imported fastener equipment, famous and excellent wire, and international leading production technology, we produce and sell national standard and non-standard step screws. The fasteners produced by the company include self-tapping screws, combination screws, Steel Shoulder Screws for Binding Barrels, steps, and environmental protection screws, which all meet the requirements of national GB standard, international ISO, American ANSI, British BS, Japanese JIS standard, and German DIN standard. They are suitable for various communication products, electronic instruments, meters, computers, digital products, home appliances, electric toys, all kinds of movements, and other precision institutions, of course, they are also used in machinery and equipment, water conservancy projects, room decoration, ships and vehicles and other high-tech products.

Packing: Inner is Poly foam, out is carton. Then pallet. Carton size: 29*19*19.5CM and 23.5*17.5*8, CM and pallet size is: 215*100*90CM, or as your requirement.

Packaging & Delivery and Packaging Details

1. Shrink film+wooden box

2. Cardboard box+pallet

3. Color box

4. As per the customer's request