Hexagon Socket Head Shoulder Screws

ISO 7379 Hexagon Socket Head Shoulder Screws(often referred to as a plug screw or equal-height screw) is a precision fastener with a distinct shoulder structure. This product is manufactured strictly in accordance with the ISO 7379 international standard, and the standard thread specifications range from M5 to M20. Its structure is divided into three parts: the hexagonal cylindrical head, the smooth and threadless precision shoulder, and the metric thread at the bottom. After installation, the shoulder part can act as a bearing, positioning pin, or rotational fulcrum.

Product Feature

High-precision positioning and bearing capacity: The smooth inner shoulder has extremely small tolerance (usually f9 or h8), and the surface has been ground, achieving extremely high smoothness. It can play a precise axial positioning role in the connection and withstand large lateral loads and shear forces.

Excellent corrosion resistance: Made of austenitic stainless steel, it inherently possesses excellent rust prevention, acid and alkali corrosion resistance, and oxidation resistance. This makes it highly suitable for long-term use in humid, outdoor, or chemically corrosive environments.

Multifunctional motion components: The smooth inner shoulder provides a low-friction running surface for rotating components such as bearings, gears, and pulleys, and can also serve as a stationary guide column or stop pin in automated equipment.

Efficient hexagon drive: The head adopts a standard hexagonal blind hole design, which can transfer a large tightening torque in a narrow space and has a smooth and aesthetically pleasing surface after installation.

Our Strength

·  Direct from manufacturer to customer, On time delivery

·  Completely fastener products,offers one - stop shopping service.

·  High quality and competitive price, saving your cost.

·  Product complies with iso9001 and ts16949 certification

·  After shippment, we will offer the Material report and Test report.

Product Application

Precision mold manufacturing: Widely used to control the ejection stroke between the fixed die plate, the runner push plate and the fixed template in the three-platen mold, it is a core component of precision stamping molds and injection molds.

Automated mechanical equipment: Often used in the linkage mechanisms of industrial robots, packaging machinery, and printing equipment, as well as the fixation and guidance of various sliding guides for cam followers.

Fluid and food equipment: Thanks to the hygienic and corrosion-resistant properties of stainless steel, it is widely applied in the assembly and maintenance of chemical pumps and valves, oil pipelines, food processing equipment, and medical devices.

Send Inquiry

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Q: Are you trading company or manufacturer ?

A: We are factory

Q: How long is your delivery time?

A: Generally it is 2-5 days if the goods are in stock. or it takes around 20 days if the goods are not in stock, certainly,it is according to your quantity.

Q: Do u do Non-standard Fasteners,and How about the OEM/ODM?

A:Yes,we do Non-standard Fasteners,OEM/ODM as well,and we have 20 years more experience in this line.We have complete production line, R&D Center. Pre-sales and after-sales support. Let u no worries about the quality.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free,but u need charge the freight at the first time.

Q:Do you sell little quantity,like few hundred and few thousand?

A: It depends on the stock. if we have ,that's ok. if not,it needs MOQ.