S-91145A247 0.25" ID x 0.425" OD Insulating Washers

Insulating Washers

1280FA00070 Insulating Washers
1280FA00070 Insulating Washers

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

Part No.
Part No. 1280FA00070
Equivalent to mcmaster :
91145A247

Basic Information

System of Measurement Inch
Washer Type Sleeve
Color Off-White

Dimension Parameters

ID 0.25"
OD 0.425"
Thickness 0.062"
Overall Height 0.124"

Material & Strength Parameters

Material Nylon 6/6 Plastic
Hardness Rockwell R108

Temperature & Environment Parameters

Temperature Range, °F Min. -40°
Temperature Range, °F Maximum 180°

Installation & Application Parameters

For Screw Size 1/4"

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2022, 223 SVHC) Compliant

Geometric Parameters

Sleeve OD 0.31"
Sleeve Height 0.062"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Superior corrosion and chemical resistance with Nylon 6/6 material, ensuring long-term reliability in harsh industrial environments.
  • Excellent electrical insulation properties for safe use in electrical assemblies, preventing short circuits.
  • Wide operating temperature range from -40°F to 180°F, maintaining performance in extreme thermal conditions.
  • Durable construction with Rockwell R108 hardness provides consistent load distribution and resistance to wear.
  • Precise fit for 1/4" screws with 0.25" ID and 0.425" OD, ensuring easy installation and secure fastening.
  • Compliance with RoHS 3 and REACH regulations for environmentally safe and globally accepted use in various industries.
  • Lightweight and non-conductive design reduces overall assembly weight and eliminates galvanic corrosion risks.

Professional Applications & Engineering Value

This Nylon 6/6 Plastic Sleeve Washer is engineered to address common industrial challenges such as corrosion, electrical conductivity, and thermal instability. Its off-white color and sleeve design enhance visibility and provide a snug fit around 1/4" screws, preventing loosening under vibration. The material's inherent properties offer reliable electrical insulation, making it ideal for electrical enclosures, automotive assemblies, and outdoor equipment. With a temperature range of -40°F to 180°F, it performs consistently in both freezing and moderately high-heat environments, reducing maintenance needs and extending service life in industrial plastic washers applications.

Specification Summary & Compliance

This washer features precise dimensions: 0.25" ID, 0.425" OD, 0.062" thickness, and 0.124" overall height, ensuring accurate fit in inch-based systems. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming it is free from hazardous substances. The Rockwell R108 hardness and Nylon 6/6 plastic construction meet general industrial requirements for durability and performance in various fastening scenarios.

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