S-91111A143 17 mm ID x 24.4 mm OD DIN 7980 Split Lock Washers for Socket Head Screws

Split Lock Washers for Socket Head Screws

1311FA00010 Split Lock Washers for Socket Head Screws
1311FA00010 Split Lock Washers for Socket Head Screws

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

Part No.
Part No. 1311FA00010
Equivalent to mcmaster :
91111A143

Basic Information

System of Measurement Metric
Washer Type Split Lock
Specifications Met DIN 7980

Dimension Parameters

ID 17 mm
OD 24.4 mm
Thickness 3.3-3.7 mm

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Not Rated

Installation & Application Parameters

For Screw Size M16

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant

Special Type Parameters

Split Lock Washer Type Standard
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 ensures bolts and screws remain securely fastened in high-motion industrial environments, reducing maintenance needs.
  • Durable 18-8 stainless steel construction provides excellent corrosion resistance, extending service life in harsh or outdoor applications.
  • Precision metric sizing (17mm ID, 24.4mm OD) guarantees a perfect fit for M16 screws, preventing misalignment and improving assembly efficiency.
  • Compliance with DIN 7980 standards assures consistent quality, dimensional accuracy, and reliable performance in European and global markets.
  • RoHS 3 and REACH environmental compliance makes this washer safe for use in regulated industries and promotes sustainable manufacturing practices.
  • Split lock design applies continuous spring tension to counter loosening from dynamic loads and thermal cycling.
  • Wide thickness range (3.3-3.7 mm) offers flexibility to accommodate slight variations in assembly while maintaining clamping force.

Professional Applications & Engineering Value

Engineered for demanding settings, this M16 split lock washer tackles common industrial challenges like bolt loosening under vibration and thermal stress. Its 18-8 stainless steel material resists rust and chemical exposure, making it ideal for machinery, automotive assemblies, and outdoor structures. The split lock washer type creates a spring-like action that maintains tension, preventing back-off in dynamic systems. By adhering to DIN 7980 specifications, it ensures precise fit with metric system fasteners, reducing installation errors. This washer is a cost-effective solution for enhancing safety and reliability in heavy-duty lock washer applications, from manufacturing plants to construction projects.

Specification Summary & Compliance

This washer meets DIN 7980 for dimensional accuracy, with an internal diameter of 17 mm, outer diameter of 24.4 mm, and thickness between 3.3–3.7 mm, designed for M16 screw size. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.

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