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
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.
Heavy Hex Thin Height
All threads in this low height self-locking nut are load-carrying, imparting exceptional strength. Combines durability and space-savings.
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.
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.
Giant Size Thin Height
Large diameter applications requiring thin height locknut to perform under a load.
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.
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.
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