S-91145A251 0.255" ID x 0.467" OD Insulating Washers

Insulating Washers

1280FA00073 Insulating Washers
1280FA00073 Insulating Washers

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

Part No.
Part No. 1280FA00073
Equivalent to mcmaster :
91145A251

Basic Information

System of Measurement Inch
Washer Type Sleeve
Color Off-White

Dimension Parameters

ID 0.255"
OD 0.467"
Thickness 0.046"
Overall Height 0.171"

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 0.312"
Sleeve Height 0.125"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Exceptional chemical and abrasion resistance thanks to Nylon 6/6 construction, ensuring long-term reliability in harsh industrial environments.
  • Reliable performance across extreme temperatures from -40°F to 180°F, maintaining integrity and function in diverse operating conditions.
  • Superior electrical insulation properties of the plastic material, providing safety and protection in electrical assemblies.
  • Excellent vibration resistance and load distribution due to the sleeve design, helping to prevent loosening and component damage.
  • Lightweight and corrosion-proof alternative to metal washers, reducing overall weight and eliminating rust concerns.
  • Precision fit for 1/4" screws with a 0.255" ID, ensuring easy installation and secure fastening.
  • Compliance with major environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This Nylon 6/6 Plastic Sleeve Washer is engineered to solve common industrial challenges where metal components fail. Its off-white Nylon 6/6 material provides excellent resistance to fuels, oils, and many chemicals, preventing degradation in demanding environments like automotive, electrical enclosures, and outdoor machinery. The sleeve type design offers superior bearing surface and helps absorb shock and vibration, which is critical for maintaining assembly integrity in high-stress applications. With a Rockwell R108 hardness, it withstands wear while the wide temperature range from -40°F to 180°F ensures performance stability, making it an ideal choice for industrial washers requiring durability without the weight or corrosion of metal.

Specification Summary & Compliance

This washer features an ID of 0.255", OD of 0.467", and an overall height of 0.171", designed for use with 1/4" screws in inch system measurements. It is manufactured from Nylon 6/6 plastic with a hardness of Rockwell R108 and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial components.

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