Carbide Brad Point Drills
Engineered with sharp outer spur geometry to cut composite fibers cleanly along the perimeter before center breakthrough, preventing exit delamination.
- 1986Aerospace tooling manufacturer & global supplier
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- NAS / MILManufactured to stringent aerospace standards
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Precision Composite Tooling
High-Performance Carbide Drilling & Machining for Advanced Airframes
Pan American Tool manufactures and supplies specialized solid carbide tooling designed for commercial airlines, MRO facilities, and OEM aerostructure fabricators. Carbon fibre reinforced polymers (CFRP) and composite-metal stacks present extreme abrasive wear and fiber-lifting challenges. Our micrograin carbide formulations, customized web geometries, and specialized coating options ensure clean fiber shearing, precise hole tolerances, and extended tool life under rigorous operational conditions.
Engineering Specifications for Composite Applications
Standard High-Speed Steel (HSS) tooling dulls rapidly when machining carbon fiber and advanced laminates, resulting in hole bell-mouthing, burring, and structural delamination. Our composite tooling program solves these failure modes with purpose-built geometry:
- Brad Point Drills: Sharp outer spurs shear carbon fibers at the perimeter prior to center point breakthrough, eliminating exit-side splintering.
- Dagger Point Drills: Low-thrust, multi-angle point geometry reduces axial force during drilling in thick composite panels and CFRP/Titanium stacks.
- Carbide Drill/Reamers (Dreamers): One-shot hole generation combines drilling and finishing steps to yield H7 tolerances in a single pass.
- NAS 965 Threaded Shank Drills: Fully standardized 1/4-28 threaded adapters for seamless use with right-angle air motors and microstop cages.
Technical Advice
Optimizing Parameters for CFRP & Stacks
Peripheral Speed: Maintain high cutting speeds (RPM) while delivering constant, moderate feed pressure to avoid heat buildup that degrades matrix resins.
Backing Support: Always use hard backing plates when drilling unreinforced sheet laminates to ensure clean fiber shear at the exit face.
Dust Extraction: Utilize high-efficiency vacuum shrouds to remove abrasive carbon dust and prevent flute clogging.
Product Catalog
Explore Carbide Drills & Composite Tooling Families
Select a product category below to view standard metric, wire, fractional, and letter sizes available for worldwide dispatch from our Florida facility.
Carbide Drill/Reamers
Dual-function "Dreamers" drill and finish structural hole diameters in a single operation, maintaining stringent aircraft tolerance requirements.
Carbide Dagger Drills
Multi-faceted dagger points minimize thrust loads and eliminate heat buildup in thick carbon fibre laminates and CFRP/Titanium stacks.
Threaded Shank Carbide Drill - Stubby
NAS 965 Type D compliant stubby carbide drills designed for tight clearance drilling using angle motors and microstop countersink cages.
Threaded Shank Carbide Drill - Short
Short-length 1/4-28 threaded shank carbide adapter drills for consistent depth control in structural airframe manufacturing.
Threaded Shank Carbide Drill - Long
Extended-reach NAS 965 Type D carbide drills crafted for deep access points across wing box structures and internal ribs.
Solid Carbide Jobber Drills - Wire Sizes
Precision ground micrograin carbide jobber drills available in standard wire gauge sizes (#1 to #80) for high-accuracy hole making.
Solid Carbide Jobber Drills - Fractional
Standard fractional solid carbide jobber drills with 118° and 135° geometries built for rigid manual or CNC drilling setups.
Solid Carbide Jobber Drills - Letter Sizes
Complete series of letter-size (A through Z) solid carbide drills ideal for precision clearance holes and specialized fastener preparations.
Solid Carbide Jobber Drills - Metric Sizes
Precision metric-size solid carbide drills for international commercial aircraft maintenance and OEM production specifications.
Piloted Solid Carbide Drills (NAS 938)
Integral pilot guides the drill cutter straight into existing holes, ensuring concentricity and surface finish in composite skin assemblies.
Carbide Extension Drills - 4" OAL
4-inch overall length solid carbide aircraft extension drills tailored for deep reach holes through honeycombs and structural flanges.
Carbide Extension Drills - 6" OAL
6-inch extended reach solid carbide drills engineered to deliver rigid, chatter-free performance in deep-cavity aerospace drilling.
Carbide Chucking Reamers
Solid carbide chucking reamers for final sizing of fastener holes in highly abrasive composite materials and tough alloy structures.
Solid Carbide Stop Countersinks 100°
100-degree solid carbide stop countersinks designed for high-wear flush rivet operations in carbon fibre composite skins.
Carbide Tipped Stop Countersinks (Integral Pilot)
Integral pilot design prevents tool wander, creating smooth, precise countersinks for flush aircraft fasteners in composite panels.
Carbide Tipped Stop Countersinks (Replaceable Pilot)
Modular countersink bodies accepting interchangeable pilots, extending body service life across varying fastener hole sizes.
Pilots for Carbide Tipped Stop Countersinks
Precision ground replacement pilots manufactured to tight tolerances for secure fitting into modular carbide countersink heads.
Carbide 6-Flute Chatterless Countersinks
Unequal flute spacing reduces chatter and vibration, delivering pristine countersink surface finishes on tough composites and metals.
Knurled Cleco Temporary Fasteners
Essential temporary sheet metal and composite panel fasteners providing uniform clamping pressure during match-drilling operations.
Engineering Guidance
Composite Tool Geometry & Application Guide
Match your specific workpiece material and hole tolerance requirements with the optimized tool geometry recommended by our application engineering team.
| Application / Material | Recommended Tool Type | Key Geometry Feature | Operational Advantage |
|---|---|---|---|
| Thin CFRP / GFRP Laminates | Carbide Brad Point Drill | Sharp outer cutting spurs | Shears outer fibers before center point breaks through, preventing exit delamination. |
| Thick Carbon Fibre Structure | Carbide Dagger Drill | Multi-angle, low-thrust point | Reduces axial thrust forces and prevents internal layer separation in thick multi-ply panels. |
| CFRP / Titanium Hybrid Stacks | Solid Carbide Dagger / Drill-Reamer | Polished flutes, robust web | Handles transition from abrasive composite to tough metal, controlling heat and hole sizing. |
| Single-Pass Close-Tolerance Holes | Carbide Drill/Reamer (Dreamer) | Drill point with reaming flutes | Generates finished fastener holes to H7 tolerance in a single operation without reaming passes. |
| Flush Fastener Preparation | Solid Carbide Stop Countersink | 100° included angle, micrograin body | Delivers extreme wear resistance against abrasive fibers during high-volume riveting cycles. |
Frequently Asked Questions
Technical Insights for Composite Machining
Why are sub-micrograin solid carbide drills essential for composite machining?
Carbon fibre reinforced polymers (CFRP) are highly abrasive and prone to splintering and delamination under conventional drilling. Sub-micrograin solid carbide provides exceptional hardness and wear resistance, maintaining razor-sharp cutting edges to shear carbon fibres cleanly rather than pulling them from the matrix.
What is the difference between a Brad Point drill and a Dagger drill for composites?
Brad Point drills feature sharp outer spurs that cut the perimeter of the hole before the centre tip breaks through, making them ideal for thin CFRP/GFRP sheets to prevent exit-burt delamination. Dagger drills feature a gradual, multi-faceted point geometry designed to reduce thrust forces when drilling thicker composite laminates or tough hybrid CFRP-Titanium structural stacks.
How does a Carbide Drill/Reamer optimize aerospace manufacturing workflows?
Carbide Drill/Reamers (often called Dreamers) combine a drilling point with reaming flutes in a single tool body. This allows structural mechanics to produce tight-tolerance, high-finish fastener holes in a single pass, eliminating secondary reaming cycles and dramatically reducing assembly time per hole.
Can these carbide drills be utilized with microstop countersink cages?
Yes. Our threaded shank solid carbide drills are manufactured to NAS 965 Type D standards with standard 1/4-28 threads, ensuring seamless integration with standard microstop cages and right-angle air drills used in airframe assembly.
Require Custom Diameters or Technical Application Support?
Our experienced application engineers assist airlines, MRO stations, and aerostructure manufacturers worldwide in selecting or custom-grinding optimal composite tooling solutions.