S-91072A397 ASTM A108 Inch-to-Inch Female Hex Thread Adapters

Key Features & Benefits at a Glance

• High-strength construction with 75,000 psi tensile strength and Rockwell B65 hardness for reliable performance in demanding applications
• Corrosion-resistant black-oxide steel provides enhanced durability and protection against environmental degradation
• Precision Class 2B thread fit ensures smooth engagement and secure connections between 2-56 and 8-32 threaded components
• External hex drive design with 1/4" hex size for easy installation and removal using standard tools
• Dual female thread configuration enables seamless adaptation between different thread sizes in inch systems
• ASTM A108 compliance guarantees material quality and manufacturing consistency for industrial use
• RoHS 3 compliance meets environmental regulations while maintaining mechanical performance

Professional Applications & Engineering Value

This female hex thread adapter solves critical connection challenges in precision assembly applications where different thread sizes must be joined reliably. The black-oxide steel construction provides superior corrosion resistance compared to plain steel, extending service life in industrial environments. With its 75,000 psi tensile strength and Rockwell B65 hardness, this adapter maintains structural integrity under mechanical stress, preventing thread stripping or deformation. The Class 2B thread fit on both ends ensures precise alignment and secure fastening between 2-56 and 8-32 components, eliminating play and vibration-induced loosening. Ideal for electronics enclosures, instrumentation, and precision machinery, this inch-to-inch adapter enables seamless integration of components from different manufacturers while maintaining the reliability of original equipment specifications.

Specification Summary & Compliance

This precision adapter features Class 2B thread fit on both 2-56 and 8-32 ends, ensuring dimensional accuracy per inch thread standards. Manufactured from ASTM A108 steel with black-oxide surface treatment for corrosion protection. The adapter meets RoHS 3 (2015/863/EU) compliance with exemption 6(a)-I for lead as an alloying element in steel. External hex drive measures 1/4" across flats with 1-1/2" length for standard tool compatibility. Thread lengths are 3/16" (2-56 end) and 7/16" (8-32 end) to accommodate various engagement requirements.