Oil plug screw with hole red

冷間圧造加工は、切削の少ない、あるいは切削を必要としない新しい圧造加工のひとつである。
金属。の作用による金属の塑性変形を利用した加工法である。
外力を受け、金型の助けを借りて、金属の体積を再分配し、移動させる。
必要な部品やブランクを製造します。冷間圧造工程は、標準的な
ボルト、ネジ、ナット、リベット、ピンなどの留め具。

Oil Plug Screw with Red Hole – Overview

An oil plug screw with a red hole is a specialized drain plug designed for easy visual inspection of oil flow or leakage, often used in automotive, industrial, or high-performance applications. The red hole (or colored indicator) serves as a quick-check feature to confirm proper sealing or detect oil seepage.

Key Features & Functions

1. Red Hole Design

• Purpose: Acts as a visual indicator for oil presence or leaks.

• どのように機能するか

  • If oil is visible in the hole, it may indicate a seal failure or residual oil after a change.

  • In some designs, the hole helps vent air during oil drainage.

• Alternative Colors: Some plugs use green, blue, or yellow for different applications.

2. Material & Construction

• Metal: Typically steel, aluminum, or brass with corrosion-resistant coatings.

• Thread Type: Matches standard sizes (e.g., M12x1.25, M14x1.5).

• Magnetic Option: Some versions include a magnetic tip to capture metal debris.

3. Head & Drive Types

• Hex Head (6mm–17mm): Standard for wrench/socket use.

• Allen Key Drive: Low-profile, common in performance vehicles.

• Washer/Seal: Often includes a copper or aluminum crush washer for a tight seal.

4. Applications

• Performance Engines: Allows quick leak checks in race cars or modified engines.

• Industrial Machinery: Used in hydraulic systems or gearboxes for easy inspection.

• Motorcycles/ATVs: Compact designs with visual indicators for maintenance.

Benefits of a Red Hole Oil Plug

✔ Quick Leak Detection – Visual warning of seal failure.
✔ Improved Drainage – Some designs reduce oil “glugging” during changes.

Installation Notes

• Torque Specs: Follow manufacturer guidelines (typically 18–25 ft-lbs for cars).

• Seal Replacement: Always use a new crush washer to prevent leaks.

• Inspection: Periodically check the hole for oil residue.

Variations & Related Products

• “Tattle-Tale” Plugs: Have a small hole that weeps oil if loose.

• Vented Drain Plugs: Use the hole for air escape during draining.

• Color-Coded Plugs: Different colors for oil, transmission, or differential fluids.

Who Should Use It?

• Mechanics who want a quick visual check for leaks.

• Racers/Enthusiasts monitoring high-stress engines.

• Industrial Users needing easy maintenance checks.