S-94518A625 5/16"-18 x 1 1/2" QQ-P-35, MS24671-43 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 from 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
- High tensile strength of 70,000 psi ensures dependable performance under significant mechanical stress.
- Coarse UNC threading provides faster installation and superior resistance to vibration loosening.
- Precise Class 3A thread fit guarantees consistent, high-quality engagement for secure fastening.
- Hex drive design allows for high-torque installation with standard tools, preventing cam-out.
- 82° countersink and flat head profile enables a flush, clean finish for streamlined assemblies.
- Compliance with major industry standards including Fed. Spec. QQ-P-35, RoHS 3, and REACH for guaranteed quality and environmental safety.
Professional Applications & Engineering Value
This 5/16"-18 UNC flat head screw is engineered to solve critical challenges in industrial assembly. The 18-8 stainless steel material provides excellent resistance to oxidation and corrosion, making it a durable choice for applications exposed to moisture, chemicals, or outdoor elements. The coarse thread design is particularly effective in softer materials or where rapid assembly is required, reducing the risk of cross-threading. The hex drive and partially threaded shank work in tandem to deliver high clamping force without stripping the drive, ensuring a secure fit in machinery, structural frameworks, and heavy-duty equipment. Its compliance with Fed. Spec. QQ-P-35 (MS24671-43) certifies its reliability for demanding engineering and military-grade applications.
Specification Summary & Compliance
This fastener features a 5/16"-18 UNC thread with a Class 3A fit for precision, a 1-1/2" length with a minimum thread length of 1-1/4", and a 3/16" hex drive. It is manufactured to meet Fed. Spec. QQ-P-35 (identified as MS24671-43) and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use.
