• Grease Fittings
• Grease Fitting Caps
• Grease Fitting Tools
• Grease Fitting Kits
• Fitting Accessories
• Grease Guns
• Grease Gun Hoses
• Couplers
• Retaining Rings
• Retaining Ring Kits
  Retaining Ring Tools
• See All Products
  

A zerk is used to lubricate mechanical parts which require grease.  A spring-loaded ball inside the zerk compresses when pressure is applied with a grease gun and allows grease to flow through the fitting into the application the zerk is installed.  After pressure from the grease gun is released the spring-loaded ball check returns to the head of the zerk and stops dirt and other contaminants from entering the zerk as well as preventing grease from escaping through the head of the zerk.   A zerk is available in different threads, lengths, angles, materials, and finishes.  A Zerk is commonly referred to as a grease fitting or zerk fitting.  Please click on the links below for a complete zerk assortment and zerk technical assistance.

ZERK CATALOG   (Includes zerk drawings and zerk descriptions)
ZERK TECHNICAL INFORMATION  (Includes zerk symbols and cross reference list)
Zerks manufactured since 1960.  All zerk sizes available!

• 1/4"-28 Taper Thread Grease Fittings
• 1/4"-28 Straight Thread Grease Fittings
• 1/8 PTF Grease Fittings
• 1/4"-PTF Grease Fittings
• 3/8"-PTF Grease Fittings
• Thread Forming Grease Fittings
  
  

• Drive Type Grease Fittings
• Button Head Grease Fittings
• Stainless Steel Grease Fittings
• Monel Grease Fittings
• Leakproof Grease Fittings
• Relief Grease Fittings
• Brass Grease Fittings

• Vent Grease Fittings
• Flush Type Grease Fittings
• Metric Grease Fittings
• Special Thread Grease Fittings
• AS Grease Fittings
• British Thread Grease Fittings
• Grease Fittings
• Grease Fittings Caps
• Grease Fitting Couplers
  

• Grease Fitting Tools
• Grease Fitting Kits
• Grease Fitting Junction Blocks
• Fitting Accessories
• Grease Guns
• Grease Gun Hoses
• Oil Cans / Spouts / Funnels
• Retaining Rings
• Retaining Ring Kits
• Retaining Ring Tools