China 304 Stainless Steel Knurled Thumb Shoulder Screw - China

Our 304 Stainless Steel High-Head Knurled Thumb Screw is engineered for applications that demand convenient, tool-free operation combined with precision alignment and reliable, reusable fastening.

Featuring a prominently knurled or "fluted" large flat head for secure manual tightening, a partial-thread design to prevent accidental detachment, and an integrated shoulder (step) for exact spacing, this screw excels in scenarios requiring repeated access, adjustment, or maintenance.

Crafted from corrosion-resistant 304 stainless steel and available in sizes M3 to M8, this versatile fastener is the ideal solution for electronics, industrial panels, jigs, and anywhere quick, secure hand-tightening is paramount.

Full customization of dimensions and features is available to meet your exact project requirements.

Tool-Free Operation with Enhanced Grip & Control

Knurled High-Head Design: The deeply knurled or fluted surface on the large-diameter head provides exceptional grip, allowing for secure tightening and loosening even when wearing gloves or when hands are oily.

The increased head height offers greater leverage, enabling better torque application and control compared to standard low-profile thumb screws.

Anti-Loss Partial Thread & Precision Shoulder

Partial Thread Advantage: The thread does not extend the full length of the screw.

This design prevents the screw from being completely unscrewed and lost from its mounting point, a critical feature for access panels, doors, or covers that are frequently opened.

Shoulder Function: The smooth, unthreaded shoulder section acts as a precision pilot and spacer.

It ensures components are held at a fixed distance, maintains alignment, and prevents over-tightening that could crush or distort sensitive parts (like circuit boards or gaskets).

Durable & Corrosion-Resistant Construction

304 Stainless Steel: Provides excellent resistance to rust, oxidation, and corrosion from moisture, chemicals, and harsh environments.

This ensures long-term reliability and maintains a clean, professional appearance, making it suitable for both indoor equipment and outdoor enclosures.

Full Customization & OEM Support

We specialize in adapting this design to your specific needs.

Available customizations include:

Dimensions: Custom diameters, overall lengths, shoulder lengths, and thread lengths.

Thread Specifications: Different thread pitches (coarse/fine) or custom threads.

Knurling Pattern: Variations in knurling style, pitch, or diamond pattern for specific grip or aesthetic requirements.

Material & Finish: Alternative stainless grades (e.g., 316) or specialized surface finishes (e.g., black oxide) upon request.

At Shenghang Technology, we are a trusted custom fastener manufacturer specializing in the production of high-precision non-standard fasteners for global buyers across the automotive, aerospace, electronics, medical, furniture, and industrial sectors.

Founded in 2006 and operating from our 3, 000 m² factory in Dongguan, China, we bring over 20 years of dedicated expertise in manufacturing custom screws, bolts, nuts, washers, rivets, and pins engineered to meet exact customer specifications, quality standards, and application requirements worldwide.

Company Contact:

• Posted By: Dongguan Shenghang Technology Co., Ltd.

• Phone: 0769-82971648

• Address: No. 535 Futong Road, Yangkengtang Village,Dalang Town, Dongguan , Guangdong , China

• Email:

• Business Description: Dongguan Shenghang Hardware Co., Ltd., abbreviated as "Shenghang Hardware", is located in Dongguan, Guangdong Province, China.
  
  We are a company that integrates research and development with sales, specializing in the production of non-standard special hardware screws, nuts, bolts and hardware fasteners for 20 years.
  
  Our factory covers an area of 3000 square meters, and all production activities are concentrated in this self owned factory to ensure efficient management and rapid response.
  
  Building area: 2000 square meters; Production area: 1500 square meters; Warehouse and quality control area: 500 square meters
  
  We are a Lean and Professional Team with a Total of 35 People, Structured as Follows:
  
  ● Production and operation team (10 people): Experienced masters and skilled technicians work together to directly control equipment, which is the first line of defense for product quality.
  
  ● Technical and Engineering Team (9 people): Among them, 4 senior technical personnel are responsible for tackling complex processes and scheme design, while the rest are responsible for programming, drawing conversion, and production support.
  
  ● Quality Management Team (3 people): Responsible for the full process inspection from feeding to shipping.
  
  ● Management and Support Team (9 people): including 4 core management personnel and 5 support personnel responsible for logistics, procurement, and administration, to ensure the efficient and orderly operation of the company.
  
  ● Small and specialized, quick response: The team structure is flat, with a short decision-making chain and efficient communication from receiving requirements to technical evaluation and production scheduling.
  
  ● Emphasis on experience and energy: The core technical personnel have over 10 years of industry experience and can accurately predict production difficulties.
  
  Frontline employees are full of energy and can ensure stable output efficiency.