S-95345A606 1/4"-20 x 3/4" ASME B18.13 Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer

Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer

0187FA00047 Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer
0187FA00047 Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer

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

Part No.
Part No. 0187FA00047
Equivalent to mcmaster :
95345A606

Basic Information

Screw Features With Washer
System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 0.492"
Head Height 0.175"
Rounded Head Profile Standard
Rounded Head Style Pan

Dimensions

Length 3/4"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded
Locking Type Lock Washer

Tip & Drive Parameters

Drive Style Phillips
Drive Size No. 3

Washer & Nut

Washer Type External-Tooth Lock
Washer Material 410 Stainless Steel
Washer OD 0.51"
Washer Thickness 0.028"
Washer Finish Passivated

Material & Strength

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

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.13
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, ensuring long-term reliability in harsh industrial environments.
  • Enhanced vibration resistance through the integrated external-tooth lock washer made from 410 stainless steel, preventing loosening under dynamic loads.
  • High tensile strength of 70,000 psi provides dependable fastening for heavy-duty applications, reducing the risk of mechanical failure.
  • Easy installation and removal with Phillips No. 3 drive and coarse UNC threads, saving time and labor in assembly processes.
  • Precise thread fit (Class 2A) ensures smooth engagement and consistent performance, minimizing cross-threading and rework.
  • Full threading along the 3/4" length offers maximum grip and adjustability, accommodating various material thicknesses securely.
  • Compliance with industry standards including ASME B18.13, RoHS 3, and REACH, guaranteeing safety and regulatory adherence for global supply chains.

Professional Applications & Engineering Value

This 1/4"-20 x 3/4" stainless steel pan head screw is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in demanding environments. The combination of 18-8 stainless steel with a passivated finish provides excellent resistance to rust and chemicals, making it ideal for machinery, automotive, and outdoor equipment. The integrated external-tooth lock washer, crafted from 410 stainless steel, bites into surfaces to maintain clamp force, effectively preventing fastener failure in high-vibration applications like engines or conveyor systems. With a coarse UNC thread and Phillips drive, it ensures quick, secure installation, reducing assembly time while meeting rigorous ASME B18.13 specifications for reliability and performance in industrial fastening.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and UNC coarse threads for consistent engagement, manufactured in accordance with ASME B18.13 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.

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