High strength oil plug screw

Cold heading process is one of the new processes for pressure machining of less or no cutting
metal. It is a processing method that utilizes the plastic deformation of metal under the action of
external forces, and with the aid of molds, redistributes and transfers the volume of metal to form
the required parts or blanks. The cold heading process is most suitable for producing standard
fasteners such as bolts, screws, nuts, rivets, and pins.etc

High-Strength Oil Plug Screw – Technical Overview

Definition & Purpose:
High-strength oil plug screw are precision-engineered fasteners designed to withstand extreme mechanical stresses while maintaining secure sealing in lubrication systems. These heavy-duty plugs are specifically developed for applications requiring superior resistance to vibration, pressure, and thermal cycling beyond standard drain plug capabilities.

Key Characteristics & Specifications

1. Material Composition

• Alloy Steels:

  • Grade 10.9/12.9 alloy steel (quenched & tempered)

  • SAE 4340/4140 chromium-molybdenum variants

  • Case-hardened surfaces (58–62 HRC)

3. Advanced Features

• Triple-Start Threads: For rapid installation/removal in high-volume applications

• Interrupted Thread Design: Prevents backing out from vibration

• Shoulder-Stop Construction: Prevents over-tightening damage

• Micro-Textured Flank Surfaces: Maintains torque retention

Specialized Variants

1. Magnetic High-Strength Plugs:

   • Samarium-cobalt magnets (operating to 350°C)

   • Retain 98% magnetic flux under vibration

2. Sensor-Integrated Plugs:

   • Embedded strain gauges for load monitoring

   • Wireless torque/temperature telemetry

   • High strength oil plug screw

Industry Applications

• Motorsports: Formula 1/NASCAR dry-sump systems

• Aerospace: Turbine gearbox drains

• Heavy Industry: Mining equipment final drives

• Military: Armored vehicle lubrication points

Installation Protocol

1. Surface Prep:

   • Ultrasonic cleaning of threaded holes

   • Thread chasing with Class 3B tolerance taps

2. Verification:

   • Ultrasonic bolt tension measurement

   • Torque-to-yield monitoring for critical apps

Selection Criteria

1. Load Requirements: Calculate preload needs based on joint stiffness

2. Environment: Specify coatings for chemical/thermal exposure

3. Maintenance: Choose between permanent or serviceable designs

These plugs represent the pinnacle of drain plug engineering, combining advanced metallurgy with precision mechanics to solve extreme sealing challenges. Their design evolution directly responds to demands from high-performance industries where failure is not an option.