S-90488A130 0.252" ID x 0.394" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

1325FA00003 Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
1325FA00003 Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

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Part No.
Part No. 1325FA00003
Equivalent to mcmaster :
90488A130

Basic Information

System of Measurement Metric
Washer Type Spring Lock

Dimension Parameters

ID 0.252"
OD 0.394"
Thickness 0.024"
Overall Height 0.047"

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Rockwell C42

Installation & Application Parameters

For Screw Size M6

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant

Special Type Parameters

Serration Location Top and Bottom
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior vibration resistance with dual-sided serration on top and bottom surfaces to prevent loosening under dynamic loads.
  • Corrosion-resistant 18-8 stainless steel construction ensures long-term durability in harsh industrial environments.
  • High hardness (Rockwell C42) provides excellent wear resistance and maintains locking performance over repeated use.
  • Precise metric sizing (M6) with 0.252" ID and 0.394" OD for accurate fit and reliable fastening in standard applications.
  • Compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible use in global markets.
  • Compact design (0.047" overall height) allows for easy installation in space-constrained assemblies without compromising strength.
  • Consistent spring lock action delivers reliable tension to secure bolts and nuts, reducing maintenance needs.

Professional Applications & Engineering Value

This M6 metric spring lock washer is engineered to address common industrial challenges like vibration-induced fastener failure and corrosion. Made from 18-8 stainless steel, it offers exceptional resistance to rust and chemical exposure, making it ideal for machinery, automotive, and outdoor equipment. The dual-sided serration on top and bottom surfaces bites into mating components, creating a secure lock that withstands high-frequency movements and thermal cycling. With a Rockwell C42 hardness, it maintains structural integrity under stress, reducing the risk of deformation. Suitable for vibration-resistant applications in manufacturing and assembly lines, this washer ensures long-term reliability, minimizes downtime, and supports compliance with stringent industry standards.

Specification Summary & Compliance

This washer features precise dimensions: 0.252" ID, 0.394" OD, 0.024" thickness, and 0.047" overall height, designed for M6 screw sizes in metric systems. It adheres to standard manufacturing tolerances for consistent performance and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring no restricted substances are used. The 18-8 stainless steel material and Rockwell C42 hardness provide reliable mechanical properties for industrial fastening needs.

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