Machine tool fastening element 7122A-012H

metalvibration damping

Description
This Center Head is a precision layout accessory for combination squares, designed to rapidly and reliably locate the center of cylindrical or round stock. Heavy-duty cast iron construction provides mass and vibration damping to prevent slippage on curved surfaces and ensure accurate center marking every time.

Why the PEC Center Head is a Shop Essential

• Cast Iron Superiority: Built from premium cast iron for superior wear resistance and structural stability compared with softer alloys.
• True-Running V-Groove: Precision-ground 90° internal V ensures the hardened rule bisects round stock consistently.
• Non-Slip Center Location: Accurately locates centers on cylindrical/round stock for lathe setups, shaft drilling and fabrications.
• Precision-Ground Reference Surfaces: Flat, ground reference faces remain true through heavy shop use for repeatable layouts.
• Industrial Locking Bolt: Knurled locking nut secures the hardened steel rule to prevent movement while marking.
• Shop-Hardened Durability: Engineered to withstand machining and woodworking shop vibrations without loss of accuracy.
• Made in USA

Technical characteristics / specifications

• Part #: 7122A-012
• Commercial name: Center Head
• Materials / Options: Cast Iron (standard), Hardened (option)
• Center Head size: Size 12" (shown / available variant)
• Internal V-angle: Precision-ground 90° V-groove for true-running alignment
• Reference surfaces: Precision-ground, flat, and hardened for long-term accuracy
• Locking mechanism: Knurled locking nut (industrial locking bolt) to secure hardened rule
• Intended use: Locating centers of cylindrical/round stock for layout, lathe work, shaft drilling, fabrications
• Construction: Heavy-duty cast iron (provides mass and dampening to prevent slippage)
• Origin: Made in USA
• Available product variants (examples on page): Cast Iron / Size 12" (variant id 50619444494623), Hardened / Size 12" (variant id 50902189408543)