S-91783A103 4-40 x 1/8" ASME B18.6.3 Stainless Steel Round Head Slotted Screws
Stainless Steel Round 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
- Exceptional corrosion resistance from 18-8 stainless steel and passivated finish, ensuring long-term reliability in harsh environments.
- High tensile strength of 100,000 psi provides secure, vibration-resistant fastening for demanding industrial assemblies.
- Precise Class 2A thread fit with UNC coarse threads enables quick, easy installation and reliable engagement.
- Fully threaded design offers maximum grip and holding power across the entire 1/8" length.
- Standard slotted drive and rounded head allow for straightforward installation with common tools while providing a smooth, snag-free profile.
- Compliance with ASME B18.6.3 ensures consistent quality, dimensional accuracy, and interchangeability.
- RoHS 3 and REACH compliance guarantees environmental safety and material sustainability for global supply chains.
Professional Applications & Engineering Value
Engineered for precision and durability, these 4-40 UNC rounded head slotted screws are ideal for applications requiring reliable fastening in corrosive or high-stress environments. The 18-8 stainless steel construction, combined with a passivated finish, significantly enhances resistance to oxidation and chemical exposure, making them suitable for electronics, instrumentation, and machinery assemblies. The coarse thread and Class 2A fit facilitate rapid installation while minimizing cross-threading risks, reducing assembly time and maintenance costs. With a fully threaded design and 100,000 psi tensile strength, these screws maintain secure connections under vibration and load, ensuring long-term operational integrity in industrial settings.
Specification Summary & Compliance
This screw features a 4-40 UNC coarse thread with Class 2A fit for standard tolerance and easy assembly. It is manufactured in accordance with ASME B18.6.3 specifications, ensuring dimensional consistency and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for hazardous substances.
