S-90368A103 M12 Thumb Nuts

Thumb Nuts

1039FA00003 Thumb Nuts
1039FA00003 Thumb Nuts

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

Part No.
Part No. 1039FA00003
Equivalent to mcmaster :
90368A103

Basic Information

System of Measurement Metric
Nut Type Thumb

Dimension Parameters

Height 22 mm

Thread Parameters

Thread Type Metric
Thread Size M12
Threading Fully Threaded
Thread Direction Right Hand
Thread Pitch 1.75 mm
Thread Spacing Coarse
Thread Fit Class 6H

Head Parameters

Thumb Nut Head Shape Round
Thumb Nut Profile Standard
Head Diameter 25.4 mm
Head Texture Knurled

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (07/08/2021, 219 SVHC) Compliant

Geometric Parameters

Collar Diameter 19 mm
Collar Height 12 mm
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
  • Enhanced manual grip and torque application thanks to the knurled round head design
  • Reliable and precise thread engagement ensured by the Class 6H thread fit for consistent performance
  • Quick and easy hand installation/removal with coarse 1.75 mm pitch right-hand threading
  • Durable, full-threaded body provides maximum strength and load distribution
  • Compliance with major environmental standards including RoHS 3 and REACH for safe, global usage
  • Optimized dimensions (25.4 mm head, 22 mm height) for versatile application in tight spaces

Professional Applications & Engineering Value

This M12 thumb nut is precision-engineered from 18-8 stainless steel to deliver exceptional durability and corrosion resistance in demanding settings such as machinery assembly, electrical enclosures, and automotive components. The fully threaded body and Class 6H thread fit ensure secure, vibration-resistant fastening without specialized tools, while the knurled head offers a non-slip surface for quick adjustments—even with gloved hands. Its metric coarse thread (1.75 mm pitch) simplifies alignment and reduces cross-threading risks, making it a reliable choice for industrial maintenance and prototype development where speed and precision are critical.

Specification Summary & Compliance

This thumb nut adheres to metric threading standards with M12 x 1.75 mm coarse, right-hand threads and a Class 6H thread fit for precise dimensional accuracy. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances. Key dimensions include a head diameter of 25.4 mm, overall height of 22 mm, collar diameter of 19 mm, and collar height of 12 mm, ensuring compatibility with standard metric components.

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