S-90585A994 10-32 x 1 1/4" 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 in harsh environments due to 316 stainless steel construction with passivated finish
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
- Precision thread engagement with Class 3A fit and 10-32 UNF fine spacing ensuring reliable, vibration-resistant connections
- Optimal flush mounting with standard 82° countersink angle and flat head design for seamless surface integration
- Efficient installation using standard 1/8" hex drive tools for quick assembly and maintenance
- Full thread coverage across the entire 1-1/4" length provides maximum grip and load distribution
- Regulatory compliance with RoHS 3 and REACH standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
These 316 stainless steel flat head screws deliver critical performance in demanding industrial settings where corrosion resistance and structural integrity are paramount. The combination of UNF fine threading with Class 3A fit ensures precise, secure fastening in vibration-prone equipment, while the passivated finish significantly enhances corrosion protection in chemical processing, marine, and food-grade applications. The 82° countersink angle and flat head profile allow for flush mounting in precision machinery, aerospace components, and architectural fixtures where surface smoothness is essential. Engineered to ASME B18.3 specifications, these fully threaded screws provide uniform stress distribution across the entire fastener length, making them ideal for high-stress assemblies requiring reliable, long-term performance.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 standards with Class 3A thread fit for superior precision. Features 10-32 UNF fine threads with right-hand orientation and full threading along the 1-1/4" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Head diameter maintains tight tolerance of -0.052" to 0" from nominal 0.411" specification.
