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Call us at 847-970-4050 or email us for part number, pricing, and availability of the Security Locknut select product for your application.

Security Locknuts are available in a variety of standard sizes and configurations.

SECURITY LOCKNUT OPTIONS

Inch Series
Metric Series
Available Sizes
Material Properties
Dimensional Properties
Finishes

All standard sizes 3/8" to 3" UNC (class 2B)

Select sizes also available with UNF thread (call for information)

SAE J995 / ASTM A563

Grade 5 and Grade 8 available

ANSI/ASME B.18.2.2.2

  • Plain Steel

  • Zinc Yellow plated Nut Body with ATD plated Lock Ring

  • Full ATD Plated Nut Body and Lock Ring

All standard sizes from 10mm to 64mm with standard thread pitches (class 6H)

Select sizes also available with fine thread pitches (call for information)

ISO 898

Class 8 and Class 10 available

Select sizes available in either DIN 934, ISO 4032, or custom sizes

  • Plain Steel

  • Zinc Yellow plated Nut Body with ATD plated Lock Ring

  • Full ATD Plated Nut Body and Lock Ring

Configurations

When a Recessed Lock Ring May be Needed
Special Recessed Lock Ring Configuration

Part Number Guide

Use the guide below to help determine Security Locknut part numbers based on product specs.

METRIC SERIES

  • All standard sizes from 10mm to 64mm with standard thread pitches (class 6H)

    Select sizes also available with fine thread pitches (call for information)

  • ISO 898

    Class 8 and Class 10 available

  • Select sizes available in either DIN 934, ISO 4032, or custom sizes

    • Plain Steel

    • Zinc Yellow plated Nut Body with ATD plated Lock Ring

    • Full ATD Plated Nut Body and Lock Ring

INCH SERIES

  • All standard sizes 3/8" to 3" UNC (class 2B)

    Select sizes also available with UNF thread (call for information)

  • SAE J995 / ASTM A563

    Grade 5 and Grade 8 available

  • ANSI/ASME B.18.2.2.2

    • Plain Steel

    • Zinc Yellow plated Nut Body with ATD plated Lock Ring

    • Full ATD Plated Nut Body and Lock Ring

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