S-90585A052 1/4"-28 x 2" ASME B18.3 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 316 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional tensile strength rated at 70,000 psi for reliable performance under high-stress applications
- Precision thread engagement with Class 3A UNF fine threads ensuring secure, vibration-resistant fastening
- Easy installation and removal with 5/32" hex drive design providing superior torque transmission
- Flush mounting capability featuring 82° countersink angle and standard flat head profile for seamless surface integration
- Full-length threading offering maximum grip and load distribution across the entire fastener length
- Consistent dimensional accuracy maintained through ASME B18.3 compliance and Rockwell B55 hardness
Professional Applications & Engineering Value
This 316 stainless steel flat head screw delivers critical performance advantages in demanding applications where corrosion resistance and structural integrity are paramount. The combination of UNF fine threading and Class 3A thread fit provides superior vibration resistance in machinery, automotive, and marine equipment, while the passivated finish enhances surface durability against chemical exposure. The hex drive design ensures reliable torque application during installation, preventing cam-out in high-torque scenarios. Engineered for industrial applications requiring precision fastening, this fully threaded fastener maintains consistent clamping force across its entire 2-inch length, making it ideal for assemblies requiring maximum thread engagement and load distribution.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit tolerance for precision UNF fine threading. Features include 1/4"-28 thread size, 82° countersink angle, and full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The screw maintains dimensional accuracy with head diameter tolerance of -0.051" to 0" and Rockwell B55 hardness rating, ensuring consistent performance in regulated industrial applications.
