Many times off-the-shelf products are exactly what you need.  Other times what you need requires just a little adjustment or two. There are a number of secondary processes available to accommodate those adjustments including:
  • Lubricants – facilitate the assembly, service and disassembly of fasteners and guard against galling
  • Plating and Finishes – protect from corrosion, improve appearance or achieve a special property
  • Sealing Solutions – seals and locks a joint in gas or liquid applications
  • Self-Locking Treatments – hold, lock or seal the fastener joint yet allow for disassembly or reuse and protect against loosening from vibration
  • Grinding – provide special sizing, tight tolerances and appearance alterations
  • Drilling – for use with security wiring to prevent loosening due to vibration  
  • Machining – alters the shape for special points, grooves or forming waist bolts

Lubricant and Anti-Galling

Lubricants facilitate the assembly, service and disassembly of fasteners to ensure proper installation and guard against joint failure. These products have anti-galling and anti-seizing properties, are applied after fastener manufacture and vary depending on the application and fastener material.  
Things to consider when determining the correct lubricant:
  • Temperature
  • Environment
  • Vacuum / Non-Vacuum
  • Installation Process
  • Fastener Material
To assist in determining the correct lubricant, contact AALL AMERICAN Fasteners to review your application and installation conditions.  

Plating & Finishes

Fasteners come in a variety of finishes to protect from corrosion, improve appearance or achieve special properties.   Finishes range from light duty zinc to heavy duty galvanized, black oxide to etching and numerous decorative colors.  For more plating and finishes and their benefits, visit the Fastener Finishes page under the Technical Resource page. Product specific finishes are included in product specifications under Fasteners

Sealing Solutions

In many cases, sealing properties are required to keep water and liquids out of the joint.  This is generally accomplished with O-rings, gaskets, washers and assorted applied compounds.  There are times, however when sealing is more critical to the application and specific sealants are required.  

Applications involving gas and liquids require sealants designed to maintain their integrity even if exposed to chemicals, water, solvents or varying temperatures require specific sealing compounds.  Compounds are available in tape, liquid and paste form and are applied at the factory or onsite as needed.  

Contact our Certified Fastener Specialists to discuss solutions for all your sealing applications at 877-791-4426.

Self-Locking Treatments

Many applications require the fastener to hold or lock into position yet still allow for disassembly or reuse.  There are self-locking treatments to guard against loosening from vibration applied to threaded fasteners that will accomplish this. 
Patches – Locking patches are applied as a secondary process once the fastener is manufactured.  The patch is used on all sizes and configurations of threaded metal fasteners making them self-locking yet still fully adjustable.
Pellets – Locking pellets come in two configurations; standard round pellets or strip pellets.  In both instances, threaded fasteners are drilled or milled forming a hole or a channel to accommodate a nylon plug.  The plug creates a self-locking joint that is fully adjustable.  


Grinding alters the size and or appearance of a fastener.  In applications requiring tight tolerances, fasteners are ground with precision to meet size specifications.  Grinding processes also improve a surface finish or are used to achieve specific finish aesthetics.


Drilling of fasteners is common and is typically used to ensure a fastener does not come loose or as a means of maintaining pressure.  

Holes drilled horizontally across the fastening device allow for wires to pass through which are then secured to prevent loosening. Typically these holes are drilled through the head, shank, threads or corners and allow for a quick visual check to ensure the fastener has not come loose due to vibration.  Holes drilled across the shank accommodate cotter pins for castellated or slotted nuts in addition to wires.

There are also holes drilled through the fastener to maintain constant pressure referred to as venting.  These holes are drilled lengthwise through the fastening device or plug.


Machining covers a number of post-manufacture processes that alter the shape of the fastening product.  These processes, sometimes referred to as semi-custom fabrication, save time and money over fabricating a device from scratch while still meeting specification.

Machining processes include:
  • Cutting/Trimming – changing the size or customizing the shape
  • Grooving – machining grooves to accommodate rings, gaskets, clips or other devices
  • Slotting – creating a slot either in the head of a fastener for installation or in the threads/shank
For information on the correct solution for your application and information on how to order, please contact AALL AMERICAN Fasteners’ sales team.  
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