S-91385A206 M3 x 4 mm DIN 916, ISO 4029 Set Screws

Set Screws

0621FA00006 Set Screws
0621FA00006 Set Screws

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

Part No.
Part No. 0621FA00006
Equivalent to mcmaster :
91385A206

Basic Information

System of Measurement Metric

Head Parameters

Head Type Headless

Dimensions

Length 4 mm

Thread Parameters

Thread Type Metric
Thread Size M3
Thread Pitch 0.5 mm
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 5g6g
Locking Type Thread Locker
Thread Locker Type Nylon Patch
Thread Locker Temperature Range -50° to 250° F

Tip & Drive Parameters

Tip Type Cup
Drive Style Hex
Drive Size 1.5 mm

Material & Strength

Material Black-Oxide Alloy Steel
Hardness Rockwell C45

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met DIN 916, ISO 4029
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Secure anti-loosening performance with permanent nylon patch thread locker, ideal for high-vibration environments
  • Exceptional corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh conditions
  • High-strength durability with Rockwell C45 hardness, ensuring reliable load-bearing and resistance to wear
  • Wide temperature tolerance from -50° to 250°F, maintaining locking integrity in extreme thermal cycles
  • Precise coarse threading with Class 5g6g fit for quick assembly and secure fastening in industrial applications
  • Compact, headless design with hex drive for flush mounting and easy installation in tight spaces
  • Cup tip configuration provides superior grip and alignment on mating surfaces, reducing component slippage

Professional Applications & Engineering Value

This M3 x 0.5 mm coarse thread set screw is engineered to address common industrial challenges like vibration-induced loosening and thermal expansion. The black-oxide alloy steel construction offers enhanced corrosion protection, crucial for machinery exposed to moisture or chemicals. Its nylon patch locking technology ensures permanent retention without compromising the metric thread integrity, making it ideal for automotive assemblies, precision equipment, and heavy-duty machinery. The hex drive and headless design allow for seamless integration into confined spaces, while the cup tip enhances contact pressure, preventing misalignment in dynamic applications. Complying with DIN 916/ISO 4029 standards, it delivers consistent performance and reliability for B2B procurement needs.

Specification Summary & Compliance

This set screw features a Class 5g6g thread fit per metric standards, ensuring precise dimensional accuracy and compatibility. It meets DIN 916 (equivalent to ISO 4029) manufacturing specifications for consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial use.

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