S-90418A671 M8 x 12 mm ASME B18.3.6M Set Screws

Set Screws

0651FA00021 Set Screws
0651FA00021 Set Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0651FA00021
Equivalent to mcmaster :
90418A671

Basic Information

System of Measurement Metric

Head Parameters

Head Type Headless

Dimensions

Length 12 mm

Thread Parameters

Thread Type Metric
Thread Size M8
Thread Pitch 1.25 mm
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 6g

Tip & Drive Parameters

Tip Type Soft
Tip Length 2.4 mm
Tip Diameter 4.8 mm
Tip Material Brass
Drive Style Hex
Drive Size 4 mm

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B80

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3.6M
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
Price available upon request. Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
  • Fast delivery
  • Enjoy discounts on bulk purchases
  • Secure Payment
  • Fast Global Shipping

Key Features & Benefits at a Glance

  • Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments.
  • Secure, non-marring fastening provided by the integrated brass soft tip, which protects precision-machined mating surfaces from damage.
  • Excellent torque transmission and strip resistance from the 4mm hex drive, allowing for high installation torque in confined spaces.
  • Reliable thread engagement and vibration resistance due to the coarse M8 x 1.25mm thread with Class 6g tolerance for consistent performance.
  • Enhanced durability and deformation resistance from the Rockwell B80 hardness, maintaining fastener integrity under load.
  • Flush, space-saving design as a headless set screw, ideal for applications where protrusion is not permissible.
  • Global regulatory compliance assurance meeting ASME B18.3.6M, RoHS 3, and REACH standards for safe, worldwide industrial use.

Professional Applications & Engineering Value

This M8 headless hex set screw is engineered to solve critical challenges in precision assembly and motion control systems. The 18-8 Stainless Steel material provides excellent resistance to oxidation and chemical exposure, making it suitable for industrial applications in manufacturing equipment, automotive components, and electronic enclosures. The brass tip is crucial for protecting costly shafts and gears from galling or indentation during frequent adjustments, while the coarse thread and Class 6g thread fit ensure rapid installation and reliable holding power against vibrational loosening. Its headless design with a 4mm hex drive allows for deep-set installation in tight spaces, providing a secure, flush finish that maintains alignment in pulleys, collars, and couplings without interference.

Specification Summary & Compliance

This metric set screw features an M8 x 1.25mm coarse thread with a Class 6g thread fit for standard tolerance applications. It is manufactured in compliance with the ASME B18.3.6M standard, ensuring dimensional accuracy and interchangeability. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for hazardous substances.

🔍
Cancel