S-91613A433 4-40 x 3/8" ASME B18.6.3 Stainless Steel Fillister Head Slotted Screws
Stainless Steel Fillister 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 316 Stainless Steel construction and passivated finish, ideal for harsh environments and extended service life
- High tensile strength of 100,000 psi ensures reliable fastening under significant mechanical stress and vibration
- Precise Class 2A thread fit with coarse UNC threading for easy installation and secure, consistent engagement
- Fully threaded design provides maximum grip and load distribution across the entire fastener length
- Slotted fillister head with high, narrow profile offers efficient drive engagement and a low-profile, streamlined appearance
- Compliance with ASME B18.6.3 guarantees dimensional accuracy and interchangeability for industrial applications
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 4-40 UNC slotted fillister head screws address critical challenges in machinery, electronics, and marine applications where corrosion resistance is paramount. The 316 Stainless Steel material, enhanced by a passivated finish, effectively resists chlorides and acidic exposures, reducing maintenance costs and downtime. The coarse thread and Class 2A fit facilitate quick assembly while maintaining tight tolerances, preventing cross-threading in high-volume production. With a rounded head profile and full threading, these screws distribute clamp load evenly, minimizing stress concentration and enhancing joint integrity in vibration-prone equipment.
Specification Summary & Compliance
This screw adheres to ASME B18.6.3 specifications, ensuring precise dimensions including a 0.183" head diameter and 3/8" length with Class 2A thread fit for consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free of hazardous substances. The UNC coarse thread and right-hand threading provide reliable fastening, backed by a tensile strength of 100,000 psi and Rockwell B100 hardness for durability in rigorous applications.
