S-95345A603 1/4"-20 x 5/8" ASME B18.13 Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer

Name: 95345A603 Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer - SKDIN
Brand: SKDIN
SKU: SKDIN-95345A603
Availability: InStock

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. 0187FA00046

Equivalent to mcmaster :

95345A603

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 5/8"

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

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Key Features & Benefits at a Glance

Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
Reliable vibration resistance thanks to the integrated 410 stainless steel external-tooth lock washer, preventing loosening under dynamic loads.
High tensile strength of 70,000 psi ensures dependable performance in demanding mechanical assemblies.
Easy installation and removal with No. 3 Phillips drive and fully threaded UNC coarse spacing for quick fastening.
Precise thread fit (Class 2A) provides consistent engagement and reduces the risk of cross-threading.
Durable construction with a rounded pan head design that distributes clamping force evenly and resists stripping.
Compliance with industry standards including ASME B18.13, RoHS, and REACH, ensuring safety and regulatory adherence.

Professional Applications & Engineering Value

This 1/4"-20 x 5/8" stainless steel pan head screw is engineered to address common industrial challenges such as vibration-induced loosening and corrosion. The combination of 18-8 stainless steel material and passivated finish offers excellent resistance to rust and chemicals, making it suitable for outdoor, marine, or chemical processing equipment. The integrated external-tooth lock washer, made from 410 stainless steel, bites into surfaces to maintain clamp load under stress, reducing maintenance needs. With a fully threaded UNC coarse spacing and Class 2A thread fit, it ensures quick assembly and reliable performance in machinery, automotive, and electrical enclosures, enhancing operational efficiency and longevity.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and UNC coarse thread standards for consistent performance. It meets ASME B18.13 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in industrial applications.

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