S-98070A155 6-32 x 1" Sealing Stainless Steel Phillips Flat Head Screws

Sealing Stainless Steel Phillips Flat Head Screws

0304FA00089 Sealing Stainless Steel Phillips Flat Head Screws
0304FA00089 Sealing Stainless Steel Phillips Flat Head Screws

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

Part No.
Part No. 0304FA00089
Equivalent to mcmaster :
98070A155

Basic Information

Screw Features Sealing
System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.279"
Head Height 0.038"
Flat Head Profile Undercut

Dimensions

Length 1"

Thread Parameters

Thread Type UNC
Thread Size 6-32
Thread Diameter 0.138"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Phillips
Drive Size No. 1
Countersink Angle 100°

Material & Strength

Material 18-8 Stainless Steel
Finish Passivated
Hardness Not Rated
Tensile Strength 70000 psi

Temperature & Environment

Maximum Pressure 1500 psi
O-Ring Material Buna-N Rubber
O-Ring Temperature Range -40° to 225° F
REACH Compliant
RoHS Compliant

Installation & Application

For Maximum Hole Diameter 0.152"
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Reliable sealing performance with Buna-N rubber O-ring that withstands pressures up to 1500 psi and temperatures from -40° to 225°F, preventing leaks in demanding environments.
  • Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term durability in harsh industrial settings.
  • Precise thread engagement with Class 2A fit and UNC coarse threading, providing secure fastening and reducing the risk of cross-threading during installation.
  • Flush mounting capability due to the flat head with undercut profile, allowing for a smooth surface finish and improved aesthetics in assembled products.
  • Easy installation and removal with Phillips No. 1 drive, offering familiar tool compatibility and efficient maintenance in high-volume applications.
  • Full threading design ensures consistent grip along the entire 1" length, enhancing load distribution and vibration resistance in dynamic assemblies.
  • Compliance with environmental standards including RoHS 3 and REACH, making it suitable for global supply chains and regulated industries.

Professional Applications & Engineering Value

This 6-32 UNC flat head Phillips screw is engineered to address critical sealing and corrosion challenges in industrial applications. The combination of 18-8 stainless steel and a passivated finish provides exceptional resistance to rust and chemical exposure, ideal for outdoor equipment, marine hardware, and food processing machinery. The integrated Buna-N rubber O-ring creates a reliable seal against fluids and gases, supporting operations in hydraulic systems, pneumatic controls, and automotive assemblies where pressure fluctuations up to 1500 psi are common. Its flat head with undercut ensures a countersunk fit that minimizes protrusion, reducing snag risks and improving safety in moving parts. With a coarse thread spacing and Class 2A fit, it offers quick installation and robust holding power, streamlining production lines and reducing downtime in maintenance-intensive environments.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and interchangeability. It is fully threaded with a right-hand direction and coarse spacing, designed for a maximum hole diameter of 0.152" and a 100° countersink angle. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in environmentally conscious industries.

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