Precision Twist Drill 6001320 Aircraft Drill Bit 55 Hss

Product Description

The PRECISION TWIST DRILL 6001320 is a wire-gauge aircraft extension drill bit designed for precision drilling in metalworking and aerospace maintenance applications. Built from high-speed steel (HSS) with an oxide finish, this bit features a 135-degree split point and a web-thinned, tapered web configuration that promotes accurate entry and reduces walking on hard surfaces. The straight-cylindrical shank measures 0.052 inches in diameter, matching the wire size 55 designation. With a 0.875-inch flute length and a right-hand spiral flute, it delivers controlled chip evacuation during drilling. Licensed HVAC, aviation, and general-trade mechanics reach for this bit when tight clearance or extension reach is required in confined workspaces.

This drill bit is suited for use in applications requiring precision hole sizing at the 0.052-inch diameter range. The Series 501-6 designation places it within a family of general-purpose HSS extension bits commonly used in aviation sheet-metal work, light fabrication, and maintenance-repair-overhaul (MRO) environments. The 6-inch overall length provides extended reach compared to jobber-length equivalents, making it practical for drilling through structural members or assemblies where a standard-length bit cannot access the target location.

Key Features

• Wire size 55 (0.052 inches) straight-cylindrical shank for standard chuck compatibility
• 135-degree drill point angle for self-starting entry and reduced thrust force
• High-speed steel construction for general-purpose metal drilling
• Oxide finish provides mild corrosion resistance and reduced friction
• Web-thinned, tapered web configuration for improved chip clearing
• Right-hand, 2-flute spiral design with 0.875-inch flute length

Compatibility

Meets NAS 907 Type B standards. Designed as a general-purpose wire-gauge extension drill bit for use in 3-jaw chucks and collet-style drill motors accepting a 0.052-inch straight-cylindrical shank.

Installation Notes

This bit is installed by a machinist, aviation technician, or maintenance professional using a compatible drill press, hand drill, or pneumatic drill motor. Secure the shank fully in the chuck before operation and confirm the work piece is clamped or fixtured to prevent movement. Always wear appropriate eye protection when drilling metal. Follow applicable shop safety standards and any facility-specific procedures for metalworking operations.