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| Customization: | Available |
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| Material: | Carbon Steel |
| Type: | Pan Head |
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This product is a shoulder screw with a hex socket (also known as a shoulder bolt or precision shoulder screw). It is typically made of stainless steel, featuring an internal hexagonal recess for tightening with a hex key, a stepped shaft with different diameters, and external threads. The stepped structure enables precise axial and radial positioning, while the hex socket ensures secure and convenient fastening.
ISO7379
Dimensions : Millimeter (mm)
| Thread Specification d |
M5 | M6 | M8 | M10 | M12 | M16 | M20 | |||
| P | Pitch | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | ||
| ds | Nominal | 6.5 | 8 | 10 | 13 | 16 | 20 | 25 | ||
| Max | 6.487 | 7.987 | 9.987 | 12.984 | 15.984 | 19.98 | 24.98 | |||
| Min | 6.451 | 7.951 | 9.951 | 12.941 | 15.941 | 19.928 | 24.928 | |||
| b | Max | 9.75 | 11.25 | 13.25 | 16.4 | 18.4 | 22.4 | 27.4 | ||
| Min | 9.25 | 10.75 | 12.75 | 15.6 | 17.6 | 21.6 | 26.6 | |||
| dk | Smooth Head | Max | 10 | 13 | 16 | 18 | 24 | 30 | 36 | |
| Knurld Head | Max | 10.22 | 13.27 | 16.27 | 18.27 | 24.33 | 30.33 | 36.39 | ||
| Min | 9.78 | 12.73 | 15.73 | 17.73 | 23.67 | 29.67 | 35.61 | |||
| k | Max | 4.5 | 5.5 | 7 | 9 | 11 | 14 | 16 | ||
| Min | 4.32 | 5.32 | 6.78 | 8.78 | 10.73 | 13.73 | 15.73 | |||
| s | Nominal | 3 | 4 | 5 | 6 | 8 | 10 | 12 | ||
| Max | 3.08 | 4.095 | 5.095 | 6.095 | 8.115 | 10.115 | 12.142 | |||
| Min | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | 12.032 | |||
| t | Min | 2.4 | 3.3 | 4.2 | 4.9 | 6.6 | 8.8 | 10 | ||
Furniture manufacturing and assembly
Woodworking and cabinetry
Home improvement and DIY projects
Outdoor and construction fastening
General purpose fastening where corrosion resistance is required
Strong self-drilling and self-tapping performance
High tensile strength for heavy-duty applications
Corrosion resistant zinc plating
Wide size range to fit different fastening needs
Factory direct supply at competitive prices
HONGSTEEL offers competitive pricing, negotiable quotes, and full support for samples or drawings. We provide OEM & ODM solutions to fit your unique project requirements.


Jiaxing Hongsteel Trading Co., Ltd., in partnership with Ningbo Hongsteel Machinery Co., Ltd., proudly stands as a beacon of excellence in advanced manufacturing and international trade under the prestigious name "Hongsteel". With an illustrious record spanning over 16 years, we have carved a niche in the global market by consistently delivering precision-engineered components and offering unbeatable service worldwide.
As a leading force in both manufacturing and trading, we at Hongsteel specialize in crafting non-standard manufactured parts, fasteners, construction machinery components, electric tool parts, and automotive components, among others. Our commitment to excellence extends to providing fully customized solutions that cater to each client's specific needs, ensuring their utmost satisfaction.
Empowered by a team of highly skilled technicians and cutting-edge production equipment, we at Hongsteel guarantee superior efficiency, rigorous quality control, and unwavering product performance at every phase of production. Our state-of-the-art facilities boast certifications like ISO9001, ISO 17025, and SGS, alongside laboratory testing accreditations, affirming our adherence to international quality standards.
At Hongsteel, our ethos revolves around the core values of "quality first, service foremost, and continuous improvement and innovation" to meet and exceed customer expectations. Our relentless pursuit of excellence is encapsulated in our quality objectives: "zero defects, zero complaints." We warmly invite your inquiries and eagerly anticipate forging long-lasting, prosperous partnerships with clients worldwide.

