S-91280A421 M7 x 35 mm ISO 4017, DIN 933, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc plating, extending service life in harsh industrial environments
- High tensile strength of 110,000 psi ensures reliable performance in demanding applications
- Class 8.8 strength grade provides excellent load-bearing capacity for heavy-duty fastening
- Fully threaded design offers maximum grip and uniform stress distribution along the entire length
- Precision Class 6h thread fit guarantees secure mating with nuts and threaded components
- External hex head design enables easy installation with standard tools and high torque application
- Compliance with ISO 4017/DIN 933 standards ensures dimensional accuracy and interchangeability
Professional Applications & Engineering Value
These M7 hex head screws deliver exceptional engineering value in industrial settings where vibration resistance and structural integrity are critical. The Class 8.8 steel construction combined with Rockwell C21 hardness provides optimal strength-to-weight ratio, preventing thread stripping and head deformation under heavy loads. The coarse thread pitch facilitates quick assembly in production environments while maintaining secure fastening. The zinc plated finish creates a protective barrier against oxidation and chemical exposure, making these metric screws ideal for machinery assembly, structural frameworks, and equipment manufacturing where high tensile strength and corrosion protection are essential for long-term reliability.
Specification Summary & Compliance
This fully threaded fastener features M7 x 1mm coarse thread with Class 6h thread fit tolerance, ensuring precise engagement with mating components. Manufactured to ISO 4017/DIN 933 dimensional standards and ISO 898 mechanical property requirements. Compliant with RoHS 3 (2015/863/EU) for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety, meeting the latest environmental and safety standards for industrial applications.
