S-94518A114 4-40 x 3/4" QQ-P-35, MS24671-5 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive Flat Head 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, ideal for harsh industrial environments
- Exceptional tensile strength rated at 70,000 psi for reliable performance in demanding applications
- Precision Class 3A thread fit ensures secure fastening and vibration resistance in critical assemblies
- 82° countersink angle provides flush mounting and clean aesthetic finish in precision applications
- Hex drive design with 1/16" drive size enables secure tool engagement and efficient installation
- Full threading along the 3/4" length maximizes grip strength and load distribution
- Comprehensive compliance with Fed. Spec. QQ-P-35, RoHS 3, and REACH standards for quality assurance
Professional Applications & Engineering Value
These 4-40 UNC flat head screws deliver exceptional engineering value in precision manufacturing and industrial maintenance applications. The 18-8 stainless steel composition combined with passivated finish provides outstanding corrosion resistance, making them ideal for electronics enclosures, aerospace components, and marine equipment where environmental durability is critical. The Class 3A thread fit and coarse thread spacing ensure rapid installation while maintaining vibration resistance in high-stress assemblies. The hex drive configuration prevents cam-out during torque application, while the 82° countersink angle creates seamless surface integration in precision machined parts. These fully threaded fasteners distribute clamping force evenly across the entire 3/4" length, providing reliable performance in thin-section materials and compact assemblies.
Specification Summary & Compliance
This 4-40 UNC flat head screw features precision Class 3A thread fit with right-hand thread direction and coarse thread spacing. Manufacturing complies with Fed. Spec. QQ-P-35 (MS24671-5) standards, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry requirements for hazardous substance restrictions and chemical safety standards.
