S-98070A330 8-32 x 1/2" Sealing Stainless Steel Phillips Flat Head Screws

Sealing Stainless Steel Phillips Flat Head Screws

0304FA00121 Sealing Stainless Steel Phillips Flat Head Screws
0304FA00121 Sealing Stainless Steel Phillips Flat Head Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0304FA00121
Equivalent to mcmaster :
98070A330

Basic Information

Screw Features Sealing
System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.332"
Head Height 0.048"
Flat Head Profile Standard

Dimensions

Length 1/2"

Thread Parameters

Thread Type UNC
Thread Size 8-32
Thread Diameter 0.164"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Phillips
Drive Size No. 2
Countersink Angle 100°

Material & Strength

Material 18-8 Stainless Steel
Finish Passivated
Hardness Rockwell B70
Tensile Strength 70000 psi

Temperature & Environment

Maximum Pressure 20000 psi
O-Ring Material Silicone Rubber
O-Ring Temperature Range -150° to 500° F
REACH Compliant
RoHS Compliant

Installation & Application

For Maximum Hole Diameter 0.179"
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior Sealing Performance: Integrated silicone O-ring creates a reliable seal capable of withstanding extreme pressure up to 20,000 psi, preventing leaks in critical applications.
  • Exceptional Temperature Resistance: Silicone O-ring maintains integrity across a wide temperature range from -150° to 500° F, ensuring consistent performance in harsh environments.
  • High-Strength Construction: 18-8 stainless steel material provides excellent tensile strength of 70,000 psi and Rockwell B70 hardness for durable, long-lasting fastening solutions.
  • Precision Thread Fit: Class 2A UNC coarse threading ensures smooth installation and secure fastening with superior thread engagement.
  • Corrosion-Resistant Protection: Passivated finish enhances the natural corrosion resistance of 18-8 stainless steel, extending service life in demanding industrial settings.
  • Flush Mounting Design: Standard flat head profile with 100° countersink angle allows for seamless, flush installation in various applications.
  • Regulatory Compliance: Meets RoHS 3 and REACH environmental standards, ensuring safe use across multiple industries and applications.

Professional Applications & Engineering Value

This 8-32 UNC Flat Head Phillips Screw delivers exceptional engineering value through its integrated silicone O-ring sealing capability, specifically designed to address critical sealing challenges in industrial applications. The 18-8 stainless steel construction combined with passivated finish provides superior corrosion resistance, making it ideal for harsh environments where moisture, chemicals, or extreme temperatures are concerns. The fully threaded design with Class 2A thread fit ensures maximum holding power and vibration resistance, while the Phillips drive style offers efficient installation. These flat head screws are engineered for applications requiring reliable sealing under high pressure conditions, from hydraulic systems and pneumatic equipment to industrial machinery where temperature-resistant sealing is paramount for operational safety and longevity.

Specification Summary & Compliance

This sealing screw features precision 8-32 UNC coarse threading with Class 2A thread fit for optimal engagement and installation. The inch system measurement ensures compatibility with standard industrial specifications. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory compliance for industrial use across various sectors.

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