FLEXLOC 8 Pitch Nut
FLEXLOC Clinch Nut
flexloc nut

FLEXLOC® PRODUCT...

Since 1989, Ultra Fastener has specialized exclusively in FLEXLOC Product. Our inventory is well represented with most sizes, material and plating options; even the hard to find items.

FLEXLOC Features & Benefits

  • One-piece, all metal, prevailing torque locknuts
  • Higher temperature use than non-metallic insert type locknuts
  • Every thread carries a portion of the induced load
  • Impact, shock and vibration resistance
  • Elimination of lock wires, lock washers and inserts
  • Locking without seating-can be used as stop nuts
  • Easy installation and removal

Click the category below for product information and specification sheets.

  • Heavy Hex Full Height

    Ideal for severe service uses.

    One-piece, all-metal, heavy duty hex exhibits greater wrenchability.

    Download Technical Specification

  • Heavy Hex Thin Height

    All threads in this low height self-locking nut are load-carrying, imparting exceptional strength.  Combines durability and space-savings.

    Download Technical Specification

  • Light Hex Full Height

    Use this high performance fastener as both a stop- and locknut.  All-metal, one-piece nut withstands extremes of temperature, shock and vibration.

    Download Specification Sheet

  • Light Hex Thin Height

    Delivers maximum weight and space savings.  Full height locknut features, with 30% height, 20% weight reduction.  Use for tight or compact assemblies.  Download Specification Sheet

  • Giant Size Full Height

    Large diameter applications requiring thin height locknut to perform under a load.

    Download Specification Sheet

  • Giant Size Thin Height

    Large diameter applications requiring thin height locknut to perform under a load.

    Download Specification Sheet

  • Metric Full Height

    Use in applications where maximum strength and wrenchability is required. Download Specification Sheet

  • Metric Thin Height

    Use in applications where maximum strength and wrenchability is required. Download Specification Sheet

  • 8-Pitch Series

    Vibration resistant locking without excessive wrenching torques required to tighten nuts with more threads per inch. Download Specification Sheet

  • Microsize Locknuts

    For miniature threaded joints in micro-assemblies.  Ideal for instruments, electronic apparatus, radar equipment, etc.  One-piece, all metal construction.  Precisely controlled locking torques.

    Download Stainless Specification Sheet

    Download Carbon Steel Specification Sheet

  • Clinch Locknuts

    Special purpose fastener for blind-mounting in thin section material.  Saves time and money with equipment that is frequently dismantled and reassembled.  One-0piece, all metal design.  Only clinch nut available with exclusive FLEXLOC locking feature.

    Download Specification Sheet

locknuts

Locknut Specialists!

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