S-94518A515 1/4"-20 x 3/4" QQ-P-35, MS24671-30 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 environments
- High tensile strength of 70,000 PSI ensures reliable performance under demanding mechanical loads
- Precise Class 3A thread fit provides excellent engagement and vibration resistance in assemblies
- Flat head design with standard profile allows for flush mounting and clean aesthetic finish
- Hex drive (5/32") enables secure tool engagement and efficient installation with standard tools
- Fully threaded UNC coarse threads offer faster installation and strong holding power in various materials
- Compliance with Fed. Spec. QQ-P-35 (MS24671-30) guarantees consistent quality and interchangeability
Professional Applications & Engineering Value
This 18-8 stainless steel flat head screw with UNC Class 3A threads is engineered to address critical industrial fastening challenges. The combination of 70,000 PSI tensile strength and passivated finish provides exceptional durability in corrosive environments, making it ideal for machinery, automotive, and marine applications where reliability is paramount. The flat head design with 82° countersink ensures smooth, flush surfaces while the hex drive prevents cam-out during high-torque installation. These fully threaded coarse pitch screws deliver superior pull-out resistance and are specifically designed for applications requiring repeated disassembly and reassembly without performance degradation.
Specification Summary & Compliance
This fastener maintains Class 3A thread fit with 1/4"-20 UNC coarse threads and meets Fed. Spec. QQ-P-35 (MS24671-30) manufacturing standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Dimensions include head diameter of 0.531", length of 3/4", and standard 82° countersink angle for consistent performance in precision applications.
