S-91223A221 1/4"-20 x 1 1/4" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and chemical exposure.
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity and prevents fastener failure under stress.
• Ultra-low socket head profile allows for installation in tight spaces and provides a sleek, low-clearance design.
• Precision Class 2A thread fit guarantees smooth assembly and consistent engagement with mating components.
• Coarse 1/4"-20 UNC threads enable quick installation and reduced risk of cross-threading in industrial applications.
• Fully threaded rod design offers maximum grip length and uniform holding power along the entire screw.
• Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards for hazardous substances.

Professional Applications & Engineering Value

This 316 Stainless Steel Socket Head Cap Screw is engineered to address critical challenges in demanding industrial settings, such as machinery assembly, marine equipment, and chemical processing plants. The ultra-low profile head and 1/8" hex drive provide exceptional access in confined spaces, while the coarse UNC threads and Class 2A fit ensure rapid, secure fastening without stripping. With a 70,000 psi tensile strength and Rockwell B70 hardness, it resists deformation under high vibration and load, reducing maintenance downtime. The corrosion-resistant 316 stainless steel material offers long-term durability in moist or corrosive environments, making it a reliable choice for OEMs and maintenance professionals seeking performance and compliance.

Specification Summary & Compliance

This screw adheres to inch system measurement with a 1/4"-20 UNC coarse thread and Class 2A thread fit for precise dimensional accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from restricted hazardous substances. The product features a fully threaded rod and right-hand thread direction, conforming to standard industrial specifications for reliable performance in various applications.