S-98049A112 0.156" ID x 0.375" OD Oversized Washers

Oversized Washers

1248FA00638 Oversized Washers
1248FA00638 Oversized Washers

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

Part No.
Part No. 1248FA00638
Equivalent to mcmaster :
98049A112

Basic Information

System of Measurement Inch
Washer Type Flat

Dimension Parameters

ID 0.156"
OD 0.375"
Thickness 0.068-0.088"

Material & Strength Parameters

Material 17-4 PH Stainless Steel
Hardness Rockwell C40

Installation & Application Parameters

For Screw Size No. 6

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
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 from 17-4 PH stainless steel, ideal for harsh or outdoor environments.
  • Exceptional mechanical strength and durability with Rockwell C40 hardness for long-lasting performance under high stress.
  • Precise dimensional fit (0.156" ID x 0.375" OD) ensures reliable seating and load distribution for No. 6 screws.
  • Excellent temperature resistance maintains structural integrity in varied thermal conditions.
  • Full compliance with RoHS 3 and REACH regulations for safe, environmentally responsible use in global markets.
  • Heavy-duty construction provides reliable vibration resistance and prevents loosening in demanding applications.
  • Optimized for industrial assembly with consistent thickness (0.068-0.088") for uniform clamping force.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 17-4 PH stainless steel flat washers deliver outstanding corrosion resistance and high strength, making them ideal for aerospace, chemical processing, and marine applications. The precise inch dimensions (0.156" ID x 0.375" OD) and Rockwell C40 hardness ensure secure fastening and excellent load distribution for No. 6 screws, reducing the risk of joint failure under vibration or thermal cycling. Their temperature-resistant properties and robust construction solve common issues like galvanic corrosion and material fatigue, providing long-term reliability in critical assemblies.

Specification Summary & Compliance

This flat washer conforms to standard inch sizing with an ID of 0.156", OD of 0.375", and thickness ranging from 0.068" to 0.088", designed specifically for No. 6 screw applications. Manufactured from 17-4 PH stainless steel with a hardness of Rockwell C40, it meets industry requirements for mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards.

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