S-90012A103 8-32 x 5/8" Coupling Nuts

Coupling Nuts

0988FA00004 Coupling Nuts
0988FA00004 Coupling Nuts

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

Part No.
Part No. 0988FA00004
Equivalent to mcmaster :
90012A103

Basic Information

System of Measurement Inch
Nut Type Coupling, Hex

Dimension Parameters

Width 3/8"
Length 5/8"

Thread Parameters

Thread Type UNC
Thread Size 8-32
Threading Fully Threaded
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Coupling Nut Profile Standard

Material & Strength Parameters

Material 6061 Aluminum

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) compliant with exemption 6(b)-II - Lead as an alloying element in aluminum for machining purposes
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) 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

  • Lightweight strength from 6061 aluminum construction reduces component weight while maintaining structural integrity
  • Superior corrosion resistance ensures long-term reliability in demanding industrial environments
  • Easy installation and removal with external hex drive design for standard wrench compatibility
  • Precise thread engagement with Class 2B thread fit guarantees secure, vibration-resistant connections
  • Full threading capability allows maximum adjustability and connection versatility across entire length
  • Industry-standard compatibility with 8-32 UNC coarse threading ensures broad application across equipment
  • Environmental compliance meets REACH and RoHS 3 standards for regulated industrial applications

Professional Applications & Engineering Value

This 6061 aluminum coupling nut delivers exceptional value in applications where weight reduction, corrosion resistance, and environmental compliance are critical engineering considerations. The fully threaded design with 8-32 UNC coarse threading provides maximum engagement surface for secure connections in assembly operations, while the external hex drive enables quick installation without specialized tools. Ideal for connecting threaded rods, studs, or other components in industrial equipment, the aluminum construction prevents galvanic corrosion when paired with compatible materials. The Class 2B thread fit ensures consistent performance in vibration-prone environments, making it particularly valuable for machinery assembly, electrical enclosures, and structural frameworks where reliability and regulatory compliance are paramount.

Specification Summary & Compliance

This coupling nut features precision 8-32 UNC coarse threading with Class 2B thread fit for consistent engagement and reliable performance. The inch-system specifications include 3/8" width across flats and 5/8" length for standard compatibility. Manufactured from 6061 aluminum with right-hand threading and external hex drive, the product complies with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) standards with applicable exemptions for lead as an alloying element in aluminum for machining purposes.

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