S-92538A392 0.156" ID x 0.562" OD Finishing Washers

Finishing Washers

1278FA00017 Finishing Washers
1278FA00017 Finishing Washers

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

Part No.
Part No. 1278FA00017
Equivalent to mcmaster :
92538A392

Basic Information

System of Measurement Inch
Washer Type Countersunk

Dimension Parameters

ID 0.156"
OD 0.562"
Thickness 0.084-0.104"

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Rockwell B83

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

Geometric Parameters

Countersink Angle 100°
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 construction, ideal for harsh or humid environments
  • Precise 100° countersink angle ensures flush, professional finishes with No. 6 screws
  • Enhanced durability from Rockwell B83 hardness, resisting deformation under load
  • Reliable dimensional fit with 0.156" ID and 0.562" OD for consistent performance
  • Compliance with environmental standards, including RoHS 3 and REACH, for safe global use
  • Optimized load distribution due to precise thickness (0.084-0.104"), reducing stress on assemblies
  • Broad industrial compatibility with inch measurement system for versatile applications

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 100° countersunk washer in 18-8 stainless steel addresses common fastening challenges like material fatigue and corrosion. Its precise countersink angle and inch dimensions ensure seamless integration with No. 6 screws, preventing protrusions in machinery, automotive, and construction assemblies. The Rockwell B83 hardness provides excellent wear resistance, while the stainless steel material offers long-term reliability in corrosive environments, reducing maintenance costs and downtime. Ideal for applications requiring flush mounting and consistent performance under vibration or load.

Specification Summary & Compliance

This washer features inch-system dimensions: ID 0.156", OD 0.562", and thickness 0.084-0.104", designed for No. 6 screws with a 100° countersink angle. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring environmental safety and suitability for global industrial use. Manufactured to precise tolerances for reliable fit and performance in various applications.

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