S-93180A260 1/4"-20 x 3" ASME B18.5 Carriage Bolts

Carriage Bolts

0851FA00011 Carriage Bolts
0851FA00011 Carriage Bolts

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

Part No.
Part No. 0851FA00011
Equivalent to mcmaster :
93180A260

Basic Information

System of Measurement Inch
Specifications Met ASME B18.5

Head Parameters

Head Type Rounded
Head Diameter 0.594"
Head Height 0.145"
Rounded Head Profile Wide
Rounded Head Style Carriage

Neck & Shank Parameters

Neck Type Square
Neck Length 0.16"
Neck Width 0.26"

Dimension Parameters

Length 3"
Screw Diameter 0.25"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Threading Fully Threaded
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2A

Material & Strength Parameters

Material 316 Stainless Steel
Hardness Rockwell B55
Tensile Strength 70000 psi

Finish & Compliance Parameters

REACH Compliant
RoHS Compliant
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 316 stainless steel construction, ideal for harsh environments and outdoor applications
  • Exceptional mechanical strength with 70,000 psi tensile rating and Rockwell B55 hardness for reliable load-bearing performance
  • Anti-rotation security through integrated square neck design that prevents spinning during installation and use
  • Wide rounded head profile provides enhanced bearing surface and prevents pull-through in softer materials
  • Full UNC coarse threading ensures faster installation and superior holding power in various materials
  • Precision Class 2A thread fit guarantees consistent performance and compatibility with standard nuts
  • Regulatory compliance meets ASME B18.5 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This 316 stainless steel carriage bolt delivers exceptional value in demanding industrial environments where corrosion resistance and structural integrity are paramount. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures reliable performance in structural applications, while the square neck design provides critical anti-rotation security that prevents loosening under vibration or dynamic loads. The fully threaded UNC coarse spacing allows for versatile installation across various material thicknesses, making these carriage bolts ideal for construction, marine applications, chemical processing equipment, and infrastructure projects where long-term durability and regulatory compliance are essential requirements.

Specification Summary & Compliance

This 1/4"-20 UNC carriage bolt features precision Class 2A thread fit with coarse spacing and full threading along the 3" length. Manufactured to ASME B18.5 standards with dimensional accuracy including 0.594" head diameter and 0.145" head height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while maintaining consistent quality and performance specifications.

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