S-90283A079 2-56 x 3/8" ASME B18.6.3 Steel Pan Head Slotted Screws

Steel Pan Head Slotted Screws

0121FA00002 Steel Pan Head Slotted Screws
0121FA00002 Steel Pan Head Slotted Screws

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

Part No.
Part No. 0121FA00002
Equivalent to mcmaster :
90283A079

Basic Information

System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 0.167"
Head Height 0.053"
Rounded Head Profile Standard
Rounded Head Style Pan

Dimensions

Length 3/8"

Thread Parameters

Thread Type UNC
Thread Size 2-56
Thread Diameter 0.086"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Slotted

Material & Strength

Material Zinc-Plated Steel
Hardness Rockwell B60

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.6.3
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
  • Enhanced holding power from coarse UNC threading and Class 2A fit, ensuring secure fastening in various materials
  • Optimized durability with Rockwell B60 hardness, maintaining structural integrity under repeated stress
  • Quick installation via slotted drive pan head design, reducing assembly time and tool requirements
  • Reliable performance in industrial applications with full threading for consistent grip along the entire 3/8" length
  • Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations (RoHS 3, REACH)
  • Broad compatibility with inch-system components and right-hand thread direction for versatile usage

Professional Applications & Engineering Value

Engineered for industrial assembly challenges, these zinc-plated steel screws deliver exceptional corrosion resistance in humid or chemically exposed environments. The 2-56 UNC coarse thread design provides superior pull-out resistance in soft materials like plastics and aluminum, while the Class 2A thread fit ensures consistent engagement without binding. The rounded pan head with slotted drive offers reliable torque transmission for high-volume production lines, and the Rockwell B60 hardness maintains thread integrity during repeated installations. Ideal for electronics enclosures, machinery panels, and automotive components where ASME B18.6.3 compliance and environmental regulations are critical.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance per UNC standards with precise 0.086" thread diameter and coarse thread spacing. Manufacturing conforms to ASME B18.6.3 specifications for dimensional accuracy and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries. Fully threaded 3/8" length provides consistent clamping force across the entire engagement area.

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