S-92210A580 5/16"-18 x 5/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Stainless Steel Hex Drive Flat Head Screws

0312FA00256 Stainless Steel Hex Drive Flat Head Screws
0312FA00256 Stainless Steel Hex Drive Flat Head Screws

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Part No.
Part No. 0312FA00256
Equivalent to mcmaster :
92210A580

Basic Information

System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.656"
Head Height 0.198"
Flat Head Profile Standard

Dimensions

Length 5/8"

Thread Parameters

Thread Type UNC
Thread Size 5/16"-18
Thread Diameter 0.313"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 3/16"
Countersink Angle 82°

Material & Strength

Material 18-8 Stainless Steel
Finish Passivated
Hardness Rockwell B55
Tensile Strength 70000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3
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 corrosion resistance with 18-8 Stainless Steel construction and passivated finish, ideal for harsh environments
  • Exceptional tensile strength rated at 70,000 psi for reliable performance in demanding applications
  • Precise Class 3A thread fit ensures secure, vibration-resistant fastening with minimal play
  • Optimized flush mounting with 82° countersink angle and flat head design for seamless surface integration
  • Enhanced torque transmission through hex drive design prevents stripping during installation
  • Full threading capability provides maximum grip length and uniform load distribution
  • Industry compliance assurance meeting ASME B18.3 standards for consistent quality and performance

Professional Applications & Engineering Value

These 18-8 Stainless Steel flat head screws deliver critical performance advantages in industrial settings where corrosion resistance and mechanical reliability are paramount. The combination of Rockwell B55 hardness and 70,000 psi tensile strength ensures these hex drive screws maintain integrity under sustained loads and vibration. The 82° countersink angle and flat head profile create flush surfaces in machinery, automotive assemblies, and structural applications, eliminating protrusions that could interfere with operation. The Class 3A thread fit with coarse UNC threading provides rapid installation while maintaining precise tolerances, making these fully threaded screws ideal for time-sensitive production environments requiring both speed and reliability.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit precision. Features 5/16"-18 UNC coarse threads with right-hand orientation and fully threaded design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The passivated finish on 18-8 Stainless Steel enhances corrosion protection while maintaining dimensional stability across the 5/8" length and 0.656" head diameter.

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