S-99091A830 10-32 x 5/8" Plastic Hex Head Screws

Plastic Hex Head Screws

0251FA00261 Plastic Hex Head Screws
0251FA00261 Plastic Hex Head Screws

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

Part No.
Part No. 0251FA00261
Equivalent to mcmaster :
99091A830

Basic Information

Color Black
System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 5/16"
Head Height 1/8"

Dimensions

Length 5/8"

Thread Parameters

Thread Type UNF
Thread Size 10-32
Thread Diameter 0.19"
Thread Spacing Fine
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material Nylon Plastic
Hardness Not Rated

Temperature & Environment

Temperature Range -40° to 185° F
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
Price available upon request. Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
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Key Features & Benefits at a Glance

  • Corrosion-resistant nylon construction ensures long-lasting performance in humid or chemically aggressive environments without rust or degradation.
  • Excellent electrical insulation properties prevent electrical conductivity, making them ideal for electronic assemblies and sensitive equipment.
  • Wide temperature tolerance from -40° to 185°F maintains structural integrity and performance in both freezing and elevated temperature conditions.
  • External hex drive with 5/16" head width provides secure, high-torque installation using standard tools for efficient assembly.
  • Class 2A thread fit with 10-32 UNF fine threading delivers precise, vibration-resistant connections that stay secure under dynamic loads.
  • RoHS 3 compliance guarantees environmental safety and adherence to international regulatory standards for hazardous substances.
  • Lightweight, fully threaded design offers consistent holding power along the entire 5/8" length, reducing the need for multiple fastener types.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 10-32 UNF nylon hex head screws solve critical challenges in electrical, automotive, and machinery applications. The black nylon plastic material inherently resists corrosion, eliminating galvanic issues when used with dissimilar metals. Their non-conductive properties prevent short circuits in electrical enclosures, while the fine UNF thread and Class 2A fit provide superior resistance to loosening from vibrations. Ideal for temperature-sensitive environments ranging from -40° to 185°F, these fully threaded screws ensure reliable performance in outdoor equipment, control panels, and plastic assembly projects where metal fasteners would cause interference or degradation.

Specification Summary & Compliance

This inch system fastener features a 10-32 UNF fine thread with Class 2A thread fit for consistent dimensional accuracy. The 5/8" length and fully threaded design comply with standard UNF specifications. Manufacturing adheres to RoHS 3 (2015/863/EU) compliance, ensuring all materials are free from restricted hazardous substances for safe use in global markets.

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