Description
The Mayhew 3/16″ x 1-1/4″ Hex Black Oxide Pin Punch (21004) is a professional-grade hand tool engineered for precision and reliability in various mechanical applications. Designed specifically for the accurate removal of pins and keys that have already been loosened, this punch ensures a clean and efficient extraction process without damaging surrounding components. Crafted from high-grade S-2 alloy steel, it undergoes a meticulous heat-treating process to achieve superior strength and resilience, making it a dependable choice for both professional technicians and dedicated DIY enthusiasts. The punch features a robust one-piece construction with a parabolic head, which is engineered to minimize mushrooming and chipping of the striking end, ensuring its longevity even with frequent use. Its professional black oxide finish not only gives it a sleek appearance but also provides significant corrosion resistance, protecting the tool from rust and extending its service life in challenging work environments. With a 3/16-inch tip diameter and a 1-1/4 inch taper length, this punch is ideal for a wide range of tasks, from automotive repairs and machinery maintenance to general assembly work. The 5/16-inch hexagon shank provides a secure grip, while its overall length of 5-1/4 inches offers ample reach and leverage. Proudly made in the USA and meeting ASME B107.410-2008 standards, the Mayhew 21004 Pin Punch is an indispensable tool for anyone seeking precise, effective, and lasting performance in their toolkit.
KEY FEATURES AND BENEFITS:
- Precise Pin & Key Removal: Specifically designed for driving out pins and keys that have been initially loosened, ensuring accurate and clean extraction without damaging the workpiece.
- Superior Material Strength: Forged from high-grade S-2 alloy steel and fully heat-treated, providing exceptional tensile strength and resilience for demanding applications.
- Enhanced Tool Longevity: Features a parabolic head and full shank heat treating, engineered to reduce mushrooming and chipping on the striking end, extending the tool’s lifespan.
- Corrosion Resistance: Coated with a black oxide finish that provides excellent protection against rust and corrosion, maintaining the tool’s performance and appearance over time.
- Optimal Dimensions for Performance: With a 3/16-inch tip diameter, 1-1/4-inch taper length, and 5-1/4-inch overall length, it offers the ideal specifications for precise pin work.
- Secure Grip: The 5/16-inch hexagon shank ensures a firm and stable grip during use, enhancing control and reducing slippage.
- Quality Assurance: Made in the USA and manufactured to meet or exceed ASME B107.410-2008 standards, ensuring high quality and reliability.
SPECIFICATIONS:
- SKU/Model Number: 21004
- Tip Diameter: 3/16 inch
- Taper Length: 1-1/4 inch
- Overall Length: 5-1/4 inches
- Shank Shape: Hexagon
- Shank Width: 5/16 inch
- Material: High-grade Alloy Steel (S-2 steel)
- Finish: Black Oxide
- Tip Type: Flat
- Hardness: 55 to 57 HRC
- Construction: 1-piece
- Measurement Type: SAE
- Country of Origin: United States
- Standards: Meets/Exceeds ASME B107.410-2008
- Included in Product: 1 x Mayhew 3/16″ x 1-1/4″ Hex Black Oxide Pin Punch (21004)
HOW TO USE:
- Prepare the Workpiece: Ensure the pin or key you intend to remove has been initially loosened using a solid punch or a similar tool. This punch is not designed for seizing or tight pins.
- Position the Pin Punch: Place the flat tip of the Mayhew 3/16″ x 1-1/4″ Hex Black Oxide Pin Punch directly onto the center of the loosened pin or key.
- Ensure Stability: Hold the punch firmly with one hand, making sure it is perpendicular to the surface of the pin.
- Strike the Punch: Using a hammer, strike the parabolic head of the punch with controlled force. Apply a series of sharp, deliberate blows to drive the pin or key out.
- Monitor Progress: Continue striking until the pin or key is fully expelled from its housing.
- Safety First: Always wear appropriate personal protective equipment, such as safety glasses, when using striking tools.
BENEFITS OF USING MAYHEW 3/16″ X 1-1/4″ HEX BLACK OXIDE PIN PUNCH (21004):
- Clean Extraction: Allows for clean and precise removal of pins without damaging components.
- Tool Longevity: Reduces the risk of tool mushrooming or chipping, offering extended product life.
- Rust Protection: Provides enhanced resistance to corrosion, maintaining appearance and function.
- Improved Handling: Offers a secure and comfortable grip for improved control during use.
- Reliable Results: Delivers consistent and reliable performance for a wide range of applications.
- U.S. Manufacturing: Backed by US manufacturing and adherence to industry standards, ensuring quality.
- Workpiece Safety: Helps prevent damage to the workpiece that can occur from using improper tools.
FEATURES:
- Premium Alloy Steel: Made from specialized S-2 grade alloy steel.
- Heat-Treated Body: Equipped with a full body heat treatment for added durability.
- Flat Punch Tip: Features a flat punch tip design for effective contact.
- Parabolic Head: Designed with a parabolic striking end to reduce chipping and mushrooming.
- Corrosion-Resistant Finish: Coated with a professional black oxide finish.
- Solid Construction: Single-piece construction for strength and reliability.
- Hexagonal Shank: Hexagon-shaped shank ensures a stable and secure grip.
- Standards Compliance: Manufactured to ASME B107.410-2008 specifications.
- Compact Length: Measures 5-1/4 inches in total length.
- Non-Tether Capable: Designed without tethering capability.





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