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Inserts Wire Threaded Inserts & Self Tapping Threaded Inserts

Product Specification

Standard: DIN 910&JB /ZQ 4450&JB /T 1000&JIS D 2101 (2B).High-Strength Grade 8 Steel Flanged Hex Head Screws. Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. The flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. The material meets SAE J429 specifications for quality. Dimensions meet IFI 111 specifications. Grade 8 steel hex head screws are marked with six radial lines. Head height includes the flange. Length is measured from under the flange.


Black-phosphate steel screws are mildly corrosion-resistant in dry environments. Zinc yellow-chromate plated steel screws resist corrosion in wet environments.


Match the thread spacing of mating components. Coarse threads are the industry standard;  choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration.


Name: Hexagon plug with 55-degree non-sealed pipe thread

Material: Carbon steel, stainless steel SUS304, SUS316, A2-70, A4-80


1. High-Pressure Iron and Steel Threaded Pipe Fittings

These fittings can stand up to high-pressure applications. Use them in noncorrosive environments. Phosphate-coated and zinc-phosphate-coated fittings offer some corrosion resistance but aren't intended for corrosive environments.


2. High-Pressure Galvanized Steel Threaded Pipe Fittings

A galvanized finish gives these fittings better corrosion resistance than our plain steel high-pressure fittings. Also known as Pressure Class 3000 fittings, they have excellent strength to handle high-pressure applications.Low-Pressure Aluminum Threaded Pipe Fittings


In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.


DIN 3852 fittings meet DIN standards for mating surface outer diameter. They have a Buna-N rubber gasket that resists grease, hydraulic oil, and motor oil—plus mild chemicals and water. The gasket stays in a groove undercut in the mating face, which prevents it from dropping out and from extruding when fittings are tightened. Black anodized and powder-coated fittings have a decorative matte black finish. Adjust finger-grip fittings by hand, no tools are required.


The contact surface on fittings with a flange extends beyond the external hex drive.


Size Can also be According to the Customer's requirement for manufacturing, please check the detailed specification sheet details PDF, CAD, 157-158Page See more product details.

Product Packaging

The inner packaging is a plastic bag, and the outer packaging is a carton. Then the tray. Carton size: 29*19*19.5CM and 23.5*17.5*8, CM and pallet size: 215*100*90CM, or as your request

Product Pictures

Hexagon-duty hexagon head screw plugs (standard type)


Hexagon-duty hexagon head screw plugs (standard type)

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