S-91793A114 4-40 x 7/8" ASME B18.6.3 Stainless Steel Binding Head Slotted Screws
Stainless Steel Binding Head Slotted Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
- High tensile strength of 100,000 psi provides exceptional load-bearing capacity and resistance to mechanical failure.
- Wide rounded binding head design offers secure fastening with increased surface contact and prevents pull-through in softer materials.
- Class 2A thread fit with UNC coarse threading ensures easy, rapid assembly and reliable engagement in various applications.
- Full threading along the 7/8" length allows for maximum adjustability and consistent clamping force across the entire fastener.
- Rockwell B100 hardness delivers excellent wear resistance and maintains thread integrity under repeated use.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees consistent quality, safety, and environmental responsibility.
Professional Applications & Engineering Value
These 4-40 UNC rounded head slotted screws are engineered to address common industrial fastening challenges, such as vibration loosening and material degradation. The 18-8 stainless steel material, combined with a passivated finish, provides outstanding resistance to oxidation and chemical exposure, making them ideal for electronics, machinery, and outdoor equipment. The wide binding head distributes pressure evenly, reducing the risk of damage to assembled components, while the coarse UNC threading ensures quick installation and secure holding power in plastics, sheet metal, and wood. These screws deliver reliable performance in applications requiring precise, durable, and compliant fastening solutions.
Specification Summary & Compliance
This screw features a 4-40 UNC thread size with Class 2A thread fit and coarse thread spacing for consistent dimensional accuracy. Manufactured in accordance with ASME B18.6.3 specifications, it ensures reliable performance and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting strict environmental and safety standards for industrial use.
