S-91772A742 4-48 x 3/8" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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 from passivated 18-8 stainless steel construction, ideal for harsh environments and extended service life
- High tensile strength of 70,000 psi ensures reliable, vibration-resistant fastening in demanding applications
- Fine UNF thread with Class 2A fit provides precise engagement and superior holding power in thin materials
- Fully threaded design offers maximum grip and load distribution along the entire fastener length
- Rockwell B70 hardness maintains thread integrity and prevents stripping during installation
- Phillips #1 drive with pan head enables efficient installation and a low-profile, finished appearance
- Compliance with ASME B18.6.3, RoHS, and REACH guarantees quality, safety, and environmental responsibility
Professional Applications & Engineering Value
This 4-48 UNF pan head screw delivers critical performance in precision assemblies where corrosion resistance and thread reliability are paramount. The passivated 18-8 stainless steel material effectively combats oxidation and chemical exposure, making it suitable for electronics enclosures, medical devices, and marine equipment. Its fine thread spacing and Class 2A thread fit ensure secure fastening in thin-section components, reducing the risk of cross-threading and material damage. The combination of fully threaded design and 70,000 psi tensile strength provides uniform clamping force, preventing joint failure under dynamic loads. With a Phillips #1 drive and low-profile rounded pan head, it offers both installation efficiency and a clean, professional finish for OEM and MRO applications.
Specification Summary & Compliance
This screw features a 4-48 UNF thread with Class 2A dimensional accuracy and fine thread spacing. It is manufactured in compliance with ASME B18.6.3 standards and is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to international quality and environmental regulations.
