304 Stainless Steel Knurled Thumb Shoulder Screw
304 Stainless Steel Knurled Thumb Shoulder Screw
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.
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