S-90097A173 0.754" ID x 0.935" OD Insulating Washers

Insulating Washers

1281FA00037 Insulating Washers
1281FA00037 Insulating Washers

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

Part No.
Part No. 1281FA00037
Equivalent to mcmaster :
90097A173

Basic Information

System of Measurement Inch
Washer Type Sleeve
Color Off-White

Dimension Parameters

ID 0.754"
OD 0.935"
Overall Height 1.17"

Material & Strength Parameters

Material Nylon Plastic
Hardness Rockwell R118

Temperature & Environment Parameters

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

Installation & Application Parameters

For Screw Size 3/4"

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/10/2022, 224 SVHC) Compliant

Geometric Parameters

Sleeve OD 0.81"
Sleeve Height 1"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Exceptional Thermal Resilience - Maintains structural integrity and performance across extreme temperatures from -40°F to 180°F, ensuring reliable operation in fluctuating industrial environments
  • Superior Electrical & Chemical Resistance - Nylon construction provides excellent insulation properties and resistance to corrosion, oils, and chemicals for extended service life
  • Precision Fit & Alignment - 0.754" ID and 0.81" sleeve OD ensure perfect centering on 3/4" screws while the 1" sleeve height provides optimal bearing surface distribution
  • Durable Mechanical Performance - Rockwell R118 hardness rating delivers consistent wear resistance and maintains dimensional stability under repeated loading conditions
  • Comprehensive Compliance Assurance - Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards for safe use in regulated industrial applications worldwide
  • Reduced Maintenance & Replacement Costs - Off-white nylon material resists degradation and maintains properties longer than standard washers, minimizing downtime
  • Optimal Load Distribution - 0.935" OD and 1.17" overall height design spreads pressure evenly to prevent surface damage and maintain joint integrity

Professional Applications & Engineering Value

This nylon sleeve washer addresses critical engineering challenges in industrial fastening systems where electrical insulation, chemical resistance, and thermal stability are paramount. The nylon plastic construction provides superior dielectric properties for electrical applications while resisting corrosion in harsh chemical environments. With its precise 0.754" inner diameter specifically engineered for 3/4" screw size applications, this washer ensures perfect alignment and prevents galvanic corrosion between dissimilar metals. The Rockwell R118 hardness maintains dimensional stability under load, while the extended temperature range from -40°F to 180°F makes it ideal for outdoor equipment, automotive assemblies, and industrial machinery exposed to varying thermal conditions. The sleeve design provides enhanced bearing surface that distributes clamping force more effectively than standard flat washers, protecting sensitive surfaces and maintaining bolt preload in vibrating applications.

Specification Summary & Compliance

This inch system sleeve washer features precise dimensional specifications including 0.754" ID, 0.935" OD, and 1.17" overall height with 0.81" sleeve OD and 1" sleeve height. Manufactured from off-white nylon plastic with Rockwell R118 hardness rating, the washer maintains performance across -40°F to 180°F operational range. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations concerning chemical substances, ensuring environmental responsibility and workplace safety compliance for global industrial applications.

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