S-94115A622 3/8"-16 x 3/4" ASME B18.3 Set Screws

Set Screws

0646FA00048 Set Screws
0646FA00048 Set Screws

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

Part No.
Part No. 0646FA00048
Equivalent to mcmaster :
94115A622

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 3/4"

Thread Parameters

Thread Type UNC
Thread Size 3/8"-16
Thread Diameter 0.375"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Tip Type Soft
Tip Length 0.094"
Tip Diameter 0.188"
Tip Material Nylon 6/6 Plastic
Tip Color Green
Tip Temperature Range -50° to 250° F
Drive Style Hex
Drive Size 3/16"

Material & Strength

Material Black-Oxide Alloy Steel
Hardness Rockwell C28

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Vibration-Resistant Fastening: Nylon 6/6 plastic tip securely locks components in place, preventing loosening under dynamic loads and reducing maintenance needs.
  • High-Strength Durability: Black-oxide alloy steel construction with Rockwell C28 hardness ensures long-lasting performance in demanding industrial environments.
  • Precise Thread Engagement: Class 3A thread fit with UNC coarse spacing provides reliable, tight connections and reduces the risk of cross-threading during installation.
  • Easy Installation & Removal: Hex drive design allows for straightforward torque application with standard tools, saving time and labor costs.
  • Broad Temperature Compatibility: Nylon tip operates effectively from -50° to 250°F, maintaining integrity in varied thermal conditions without degradation.
  • Corrosion-Resistant Finish: Black-oxide surface treatment enhances corrosion resistance, extending service life in humid or chemically exposed settings.
  • Space-Saving Headless Design: Ideal for applications with limited clearance, enabling flush mounting without protruding hardware.

Professional Applications & Engineering Value

This black-oxide alloy steel set screw with a green nylon tip addresses critical challenges in machinery assembly, automotive systems, and precision equipment where vibration resistance and reliable clamping force are paramount. The UNC coarse thread and Class 3A fit ensure rapid installation with minimal risk of stripping, while the nylon 6/6 plastic tip absorbs shocks and prevents damage to sensitive surfaces. Engineered for industrial set screw applications, it eliminates the need for additional locking mechanisms, reducing part counts and assembly time. The hex drive style facilitates high-torque tightening in confined spaces, making it a versatile solution for securing gears, pulleys, and shafts against rotational forces.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with precise UNC 3/8"-16 thread dimensions, Class 3A thread fit for superior tolerance control, and a coarse thread spacing for efficient engagement. It is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory alignment for global supply chains. The Rockwell C28 hardness and black-oxide finish further validate its durability and corrosion resistance in accordance with industrial standards.

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