S-90275A259 10-24 x 3 1/2" ASME B18.6.3 Steel Slotted Flat Head Screws
Steel Slotted 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 zinc-plated steel construction for extended service life in demanding environments
- Exceptional holding power with 60,000 psi tensile strength and Rockwell B70 hardness for reliable performance under heavy loads
- Precise flush mounting with standard 82° countersink angle and flat head design for seamless surface integration
- Easy installation and removal through traditional slotted drive style compatible with common hand tools
- Consistent threading performance with Class 2A thread fit ensuring smooth engagement and secure fastening
- Versatile coarse threading (UNC 10-24) providing excellent grip in various materials including metals and plastics
- Full 3½" threading offering maximum engagement depth for superior pull-out resistance
Professional Applications & Engineering Value
Engineered for industrial applications requiring reliable fastening solutions, these zinc-plated steel flat head screws address critical engineering challenges. The UNC coarse threading combined with Class 2A thread fit ensures rapid installation and vibration resistance in assembly lines, machinery, and structural components. The 82° countersink angle provides flush surface mounting, eliminating protrusions in precision equipment while the slotted drive maintains compatibility with standard tools. The zinc plating delivers essential corrosion protection for manufacturing facilities, outdoor equipment, and automotive applications where environmental factors threaten fastener integrity. These fully threaded screws distribute stress evenly along the entire 3½" length, preventing localized failure points in heavy-duty assemblies.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent performance. The inch-system screws feature 10-24 UNC coarse threads with right-hand direction and standard flat head profile. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety standards. Mechanical properties include 60,000 psi tensile strength and Rockwell B70 hardness for dependable performance in industrial fastening applications.
