S-90275A189 8-32 x 3/16" ASME B18.6.3 Steel Slotted Flat Head Screws

Steel Slotted Flat Head Screws

0354FA00040 Steel Slotted Flat Head Screws
0354FA00040 Steel Slotted Flat Head Screws

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

Part No.
Part No. 0354FA00040
Equivalent to mcmaster :
90275A189

Basic Information

System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.312"
Head Height 0.07"
Flat Head Profile Undercut

Dimensions

Length 3/16"

Thread Parameters

Thread Type UNC
Thread Size 8-32
Thread Diameter 0.164"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Slotted
Countersink Angle 82°

Material & Strength

Material Zinc-Plated Steel
Hardness Rockwell B70
Tensile Strength 60000 psi

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 for extended service life in demanding environments
  • Exceptional 60,000 psi tensile strength provides reliable fastening performance under high-stress conditions
  • Precision Class 2A thread fit ensures smooth installation and consistent engagement with mating components
  • 82° countersink angle with undercut head profile delivers flush mounting and reduced risk of material splitting
  • Fully threaded coarse UNC design offers maximum grip length and faster installation in various materials
  • Rockwell B70 hardness rating maintains thread integrity and prevents stripping during repeated use
  • Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH standards for global industrial acceptance

Professional Applications & Engineering Value

These 8-32 UNC flat head screws deliver critical engineering solutions where flush surface mounting and high-strength fastening are paramount. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, machinery assemblies, and electronic enclosures exposed to harsh conditions. The coarse UNC threads with Class 2A fit ensure reliable engagement in both metal and composite materials, while the 82° countersink angle with undercut head profile prevents surface protrusion and distributes clamping force evenly. The combination of 60,000 psi tensile strength and Rockwell B70 hardness makes these slotted drive screws ideal for applications requiring repeated disassembly without compromising thread integrity.

Specification Summary & Compliance

This 8-32 UNC flat head screw features precision Class 2A thread fit per ASME B18.6.3 specifications, ensuring dimensional accuracy and interchangeability. The manufacturing process adheres to strict quality standards with fully threaded right-hand coarse threads and consistent 82° countersink angle. Compliance includes ASME B18.6.3 for dimensional requirements, RoHS 3 (2015/863/EU) for hazardous substance restrictions, and REACH (EC 1907/2006) for chemical safety regulations, making these screws suitable for global industrial supply chains.

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