S-96870A225 5/16"-18 x 3/4" ASME B18.2.1, ASTM F593 Grade 630 High-Strength 17-4 PH Stainless Steel Hex Head Screws

High-Strength 17-4 PH Stainless Steel Hex Head Screws

0249FA00006 High-Strength 17-4 PH Stainless Steel Hex Head Screws
0249FA00006 High-Strength 17-4 PH Stainless Steel Hex Head Screws

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Part No.
Part No. 0249FA00006
Equivalent to mcmaster :
96870A225

Basic Information

System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 1/2"
Head Height 13/64"

Dimensions

Length 3/4"

Thread Parameters

Thread Type UNC
Thread Size 5/16"-18
Thread Diameter 0.3125"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material 17-4 PH Stainless Steel
Hardness Rockwell C28
Yield Strength 105000 psi
Tensile Strength 130000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.2.1, ASTM F593 Grade 630
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Exceptional corrosion resistance from 17-4 PH Stainless Steel construction, ideal for harsh industrial environments
  • Superior mechanical strength with 130,000 psi tensile strength and 105,000 psi yield strength for heavy-duty applications
  • Precise thread engagement with Class 2A fit UNC coarse threads ensuring reliable fastening and vibration resistance
  • Optimized installation efficiency through external hex drive design and fully threaded shank for maximum grip
  • Long-term durability backed by Rockwell C28 hardness for maintained performance under repeated stress
  • Regulatory compliance assurance meeting ASME B18.2.1, RoHS 3, and REACH standards for global supply chain compatibility
  • Reduced maintenance cycles thanks to material properties that resist corrosion and deformation over time

Professional Applications & Engineering Value

Engineered for demanding industrial assembly and heavy machinery applications, these 17-4 PH Stainless Steel hex head screws deliver critical reliability where failure is not an option. The combination of high tensile strength (130,000 psi) and corrosion-resistant properties makes them ideal for chemical processing equipment, marine components, and structural frameworks exposed to aggressive environments. The UNC coarse thread pattern with Class 2A thread fit provides superior vibration resistance while enabling quicker installation compared to fine-thread alternatives. With full threading along the entire 3/4" length, these screws maximize contact surface area for enhanced load distribution, effectively preventing joint loosening in high-vibration settings common in manufacturing and construction applications.

Specification Summary & Compliance

These 5/16"-18 UNC hex head screws feature precision Class 2A thread fit with coarse thread spacing and right-hand thread direction. Manufactured to ASME B18.2.1 specifications using ASTM F593 Grade 630 material, they ensure dimensional accuracy and mechanical consistency. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and global market acceptance for your projects.

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