Upgrade & Restore Your Tire Changer's Mechanical Rigidity

The 1/2"-13" Lock Nut (Coats 8101039) is a direct-replacement mechanical fastener engineered for the primary pivot joints and cylinder mountings of professional tire changers. It features a heavy-duty steel body and a prevailing-torque nylon insert to resist backing off under constant operational vibrations and mechanical stresses.

Regular maintenance and timely replacement of worn lock nuts are critical to protecting your primary pivots, shafts, and cylinders from structural play, ensuring your machine maintains factory-spec rigid tolerances.

Machine Location:

This lock nut is used to secure the Foot Pedal shaft pivot brackets, the Bead Breaker Cylinder rod clevis, and the tilt-back tower pivot shafts of the tire changer.

Key Features & Specifications

• Nylon-Insert Zinc-Plated Steel: Forged steel construction finished with a corrosion-resistant zinc plating to protect against shop grease, oil, and moisture.
• Nylon Prevailing Torque Insert: A high-durability nylon ring deforms over the male thread upon assembly, creating a tight friction lock that resists back-off under high vibration.
• Thread Specification: Standard 1/2"-13 thread pitch.

Complete Machine Compatibility

This universal lock nut is verified to fit the following Coats Rim Clamp® tire changer families:

• Coats 4050 Center Post
• Coats 4050A Tire Changer
• Coats 4070 Tire Changer
• Coats 50/60/70/80/90 X-Model Series Tire Changer
• Coats 5030 A/E Tire Changer
• Coats 5035 A/E Tire Changer
• Coats 5040 A/E Tire Changer
• Coats 50xx Series Tire Changer

Frequently Bought Together / Related Parts

These drawing-adjacent parts connect directly next to this lock nut on your foot pedal pivot brackets and cylinder rod clevis drawings:

• Coats 1/8" NPT X 1/8" Tube Elbow Fitting (Part # 8181997)
• Coats St. Fitting 3/8" Male Elbow 1/4" NPT X 3/8" Tube (Part # 8181998)
• Coats Hitch Pin (Part # 8107139)
• Coats 3/4" Snap Ring (Part # 8101001)
• Coats 3/4" NPT X 3/4" Barb Elbow Plastic Fitting (Part # 8107924)
• Coats Lock Handle/Lift Cam Left Hand (Part # 8181082)
• Coats 5/16"-18" X 5/8" Flange Bolt (Part # 8183452)
• Coats 60" Inflation Hose Assembly W/ Chuck (Part # 8106871)
• Coats Cap O-Ring (Part # 8000465)
• Coats 5/8" Lock Washer (Part # 8104613)

Alternative / Cross-Reference Part Numbers: SVI BW-1610-39 (Order SVI F-NL-0250-20) | Coats 8101039 | Distributor AM8101039

AMMCO and COATS are registered trademarks of The Coats Company. AEPN Inc. is not associated in any way with The Coats Company, Inc. Any names, symbols, numbers, and descriptions are used for reference purposes only. It is not implied that any part listed is the product of these manufacturers.