Drill Bit
$45.00
Step drill bit for window screen plunger bolts, with a 0.125-inch pin hole and clearance for a 0.187-inch bolt head.
99999 in stock
Drill precise, professional-grade mounting holes for standard spring plungers with our specialized, USA-made step drill bit. Crafted from durable high-speed steel (HSS), it is engineered to create a dual-diameter hole in one smooth operation, ensuring a snug fit and professional finish for your screen hardware.
Key Features & Benefits
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USA-Made HSS Quality: Precision-crafted in the USA from durable High-Speed Steel (HSS) for long-lasting performance and reliable sharpness.
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Dual-Action Precision: Simultaneously drills a 0.135-inch hole for the plunger pin and a larger step clearance for the 0.187-inch plunger bolt head.
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Streamlined Installation: Eliminates the need to switch bits, saving time and ensuring perfect hardware alignment.
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Professional Results: Creates clean, accurate holes to keep spring plungers secure and fully functional.
Specifications
| Specification | Details |
| Material | High-Speed Steel (HSS) |
| Origin | Made in the USA |
| Pin Hole Diameter | 0.135 inch (for the pin) |
| Bolt Head Clearance | 0.187 inch (for the plunger bolt head) |
| Application | Prepares screen frames for standard spring plungers |
Frequently Asked Questions
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What material is the drill bit made from?
It is proudly made in the USA from durable High-Speed Steel (HSS) for enhanced strength and longevity.
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What is the purpose of this step drill bit?
It prepares a screen frame for a standard spring plunger by drilling a 0.135-inch hole for the pin while providing a larger step clearance for the 0.187-inch plunger bolt head.
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How do I position the hole correctly?
Position the hole carefully to ensure the pin properly aligns with its receiving opening in the window frame.


