S-90291A843 0-80 ASME B18.3 Set Screws

Set Screws

0644FA00053 Set Screws
0644FA00053 Set Screws

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

Part No.
Part No. 0644FA00053
Equivalent to mcmaster :
90291A843

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Thread Parameters

Thread Type UNF
Thread Size 0-80
Thread Diameter 0.06"
Thread Spacing Fine
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Tip Type Soft
Tip Length 0.031"
Tip Diameter 0.031"
Tip Material Nylon 6/6 Plastic
Tip Color Green
Tip Temperature Range -50° to 250° F
Drive Style Hex
Drive Size .028"

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B80

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3

Installation & Application

Long 3/16"
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 Vibration Resistance - Nylon 6/6 plastic tip prevents loosening under dynamic loads, maintaining secure positioning in high-vibration environments
  • Precision Thread Engagement - Class 3A thread fit ensures tight tolerances and reliable fastening without galling or cross-threading
  • Exceptional Corrosion Resistance - 18-8 stainless steel construction provides excellent protection against rust and chemical exposure
  • Wide Temperature Compatibility - Operational range from -50° to 250° F ensures performance stability across diverse industrial conditions
  • Optimal Surface Protection - Non-marring nylon tip prevents damage to delicate components and finished surfaces
  • Enhanced Durability - Rockwell B80 hardness delivers reliable mechanical strength for repeated installation cycles
  • Industry Standard Compliance - Meets ASME B18.3 specifications for consistent quality and interchangeability

Professional Applications & Engineering Value

This precision 0-80 UNF hex headless set screw with green nylon 6/6 plastic tip addresses critical engineering challenges in precision assembly applications. The Class 3A thread fit provides superior engagement in fine-thread applications where vibration resistance and positional accuracy are paramount. The 18-8 stainless steel construction ensures corrosion resistance in harsh environments, while the nylon tip eliminates marring on shafts, gears, and precision components. Ideal for industrial set screws applications in machinery, electronics, and automotive assemblies, this fastener maintains consistent clamping force without damaging expensive components. The headless design with hex drive allows for flush installation in confined spaces, making it perfect for adjustable mechanisms and precision alignment systems where space optimization is critical.

Specification Summary & Compliance

This 0-80 UNF set screw features precise Class 3A thread tolerances with fine thread spacing and right-hand thread direction. Manufactured to ASME B18.3 specifications, the fastener ensures dimensional consistency and reliable performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material transparency. The 3/16" length and 0.06" thread diameter maintain strict dimensional accuracy for precise applications requiring exact positioning and secure fastening in industrial environments.

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