S-91285A111 3/8"-24 x 3 11/16" T-Bolts

T-Bolts

0857FA00001 T-Bolts
0857FA00001 T-Bolts

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

Part No.
Part No. 0857FA00001
Equivalent to mcmaster :
91285A111

Basic Information

System of Measurement Inch
Application General Purpose

Head Parameters

Fastener Head Type Tee
Head Thickness 1/2"
Head Width 2"

Dimension Parameters

Length 3 11/16"
Screw Diameter 0.375"

Thread Parameters

Thread Type UNF
Thread Size 3/8"-24
Threading Partially Threaded
Thread Direction Right Hand
Thread Spacing Fine
Thread Fit Unified Standard Class 2A
Thread Length 1 1/2"

Material & Strength Parameters

Material Steel
Hardness Rockwell C25
Tensile Strength 120000 psi

Finish & Compliance Parameters

Finish Black Oxide
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

  • Exceptional tensile strength of 120,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
  • Durable black oxide finish on steel construction provides enhanced corrosion resistance and a professional appearance for extended service life.
  • Precise Class 2A thread fit with UNF fine threading offers smooth assembly and secure fastening, minimizing cross-threading issues.
  • Partially threaded design allows for optimal clamping force distribution, ideal for applications requiring precise grip length.
  • Rockwell C25 hardness ensures superior wear resistance and durability under repetitive loading conditions.
  • Compliance with REACH and RoHS 3 standards guarantees environmental safety and regulatory adherence for global industrial use.
  • Versatile 2" head width provides excellent torque application and stability, simplifying installation in general-purpose assemblies.

Professional Applications & Engineering Value

This 3/8"-24 UNF T-bolt is engineered to address common industrial challenges such as vibration loosening and material fatigue. The steel material with black oxide finish combats corrosion in demanding environments, while the fine UNF threading and Class 2A fit ensure consistent engagement in machinery, automotive, and structural applications. Its partially threaded configuration allows engineers to optimize load-bearing sections, reducing stress concentrations. With a high tensile strength of 120,000 PSI and Rockwell C25 hardness, it delivers reliable performance in general-purpose fastening where durability and precision are critical, minimizing maintenance downtime and enhancing assembly integrity.

Specification Summary & Compliance

This T-bolt adheres to Unified Standard Class 2A thread fit with 3/8"-24 UNF fine threading and right-hand direction. It meets dimensional accuracy standards for inch-system fasteners, including a thread length of 1 1/2" and overall length of 3 11/16". The product is manufactured in compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring it is free from hazardous substances and suitable for industrial applications requiring environmental and safety conformity.

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