S-90462A340 8-32 x 1/2" Thumb Screws

Thumb Screws

0790FA00005 Thumb Screws
0790FA00005 Thumb Screws

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

Part No.
Part No. 0790FA00005
Equivalent to mcmaster :
90462A340

Basic Information

Color Off-White
System of Measurement Inch

Head Parameters

Head Type Thumb
Thumb Screw Head Shape Round
Round-Head Thumb Screw Profile Raised
Head Diameter 27/64"
Head Height 5/16"
Head Texture Knurled

Dimensions

Length 1/2"
Collar Diameter 3/8"
Collar Height 11/64"

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

Material & Strength

Material Glass-Filled Nylon Plastic
Hardness Not Rated
Tensile Strength 18000 psi

Temperature & Environment

Temperature Range -40° to 185° F
REACH Compliant
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Easy manual operation with knurled round head design for superior grip without tools
  • Exceptional durability from glass-filled nylon construction with 18,000 psi tensile strength
  • Reliable performance across environments with temperature resistance from -40° to 185°F
  • Quick installation through coarse UNC threads and Class 2A fit for smooth engagement
  • Secure fastening with fully threaded 1/2" length and integrated collar for stability
  • Corrosion-free operation in plastic-sensitive applications versus metal alternatives
  • Regulatory compliance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

Engineered for repeated access panels, electronic enclosures, and instrumentation covers, this glass-filled nylon thumb screw eliminates galvanic corrosion risks while providing excellent electrical insulation. The knurled round head profile ensures tool-free operation in tight spaces, while the 8-32 UNC coarse thread resists cross-threading during frequent adjustments. With 18,000 psi tensile strength and temperature stability from -40° to 185°F, it maintains clamping force in industrial environments where metal screws would fail due to thermal expansion or conductivity concerns. The fully threaded design and integrated collar distribute load evenly, preventing material deformation in plastic or composite assemblies.

Specification Summary & Compliance

Manufactured to Class 2A thread fit standards with 8-32 UNC coarse threading and precise 1/2" length tolerances. Complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for hazardous substance restrictions. The glass-filled nylon material provides consistent mechanical properties across the specified temperature range while maintaining dimensional stability under load.

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