S-91251A978 10-24 x 1 7/8" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish extends service life in demanding industrial environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies with minimal backlash.
• High hardness rating (Rockwell C37) enhances wear resistance, maintaining thread integrity through repeated use.
• Partially threaded design allows for optimal clamping force control and reduced thread galling in specific joint configurations.
• Standard hex drive (5/32") enables easy installation with common tools while accommodating high torque applications.
• Coarse UNC threads facilitate quicker assembly and better performance in materials prone to stripping.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these black-oxide alloy steel socket head cap screws solve critical fastening challenges where vibration resistance and durability are paramount. The 10-24 UNC coarse thread configuration combined with Class 3A fit ensures secure engagement in metals and engineered plastics, preventing loosening in machinery, automotive assemblies, and precision equipment. The partially threaded rod type provides precise clamping control while the ASTM A574 compliant manufacturing guarantees consistent quality across production runs. Ideal for applications requiring high-strength fasteners with reliable performance in corrosive environments.

Specification Summary & Compliance

Manufactured to ASTM A574 specifications with Class 3A thread fit and UNC coarse thread standards. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Dimensions include 1-7/8" length, 5/32" hex drive, and 10-24 UNC thread size in inch measurement system.