1180A 6" Aircraft Extension Drill

DRILLCO 1180A Aircraft Extension Drills — 6" Reach for Hard-to-Access Drilling

The DRILLCO 1180A series are 6" aircraft extension drills engineered for drilling holes in hard-to-reach places on medium and high strength materials. Manufactured to NAS 907 Type C specifications, these high speed steel drills feature a 135-degree split point and jobber flute lengths, making them suitable for both portable and machine drilling applications. The surface-treated finish and heavy-duty construction are designed to withstand the demands of professional metalworking environments. Speed, feed, and lubrication are all critical to cutting tool performance with these drills.

Technical Specifications

Unlike standard jobber-length drills, the 1180A's 6" extension gives contractors the reach needed to access confined or obstructed drilling locations without sacrificing the self-centering accuracy of a 135-degree split point. Manufactured to NAS 907 Type C specifications, these drills meet a defined aerospace and industrial standard rather than a generic commercial tolerance, providing consistent performance across the series.

Key Features & Benefits

135-Degree Split Point

The 135-degree split point is self-centering, reducing or eliminating the need for a center punch on most surfaces. This allows for faster setup and less walking on curved or angled workpieces, which is especially valuable when drilling in awkward positions.

6" Aircraft Extension Length

The extended 6" length is specifically designed to reach drilling locations that standard-length drills cannot access. This makes the 1180A well suited for structural, mechanical, and fabrication work where obstructions or deep cavities are common.

NAS 907 Type C Specification

Manufactured to NAS 907 Type C, these drills conform to a recognized aerospace and industrial standard for aircraft extension drills. Contractors can rely on consistent dimensional accuracy and performance across the product line.

Surface Treated Finish

The surface treatment helps reduce friction and heat buildup during drilling, which contributes to longer tool life when working with medium and high strength materials. This is particularly important during heavy-duty drilling cycles where heat accumulation can accelerate wear.

Jobber Flute Lengths

Jobber flute lengths provide the extra chip clearance needed for deeper holes while maintaining the rigidity required for accurate drilling. This flute geometry is well suited to the extended reach format of the 1180A.

Heavy-Duty Construction

Built for both portable and machine drilling, the heavy-duty construction of the 1180A allows it to handle demanding applications without premature failure. This versatility means contractors can use the same drill in handheld drills or drill presses depending on the job.

Common Applications

Drilling in Hard-to-Reach Places

The 6" extension length is purpose-built for accessing confined spaces, deep cavities, or locations obstructed by surrounding structure where a standard-length drill cannot reach.

Medium and High Strength Material Drilling

The 135-degree split point and surface treatment make the 1180A appropriate for drilling into medium and high strength materials where point stability and heat management are critical.

Heavy-Duty Drilling

Designed for heavy-duty use, these drills are suitable for demanding production or field drilling tasks where tool durability and consistent performance are required.

Portable Drilling Applications

The 1180A is compatible with portable drill equipment, giving tradespeople the flexibility to use these extension drills in the field without requiring a stationary machine setup.

Machine Drilling Applications

These drills are equally suited for use in drill presses and other stationary drilling equipment, making them a versatile addition to a shop or fabrication environment.

Product Documents

• Safety Data Sheet (SDS) — DRILLCO High Speed Steel Cutting Tools
• DRILLCO Product Linecard

Safety Data Summary

Hazard Information

• During normal operation, high speed steel products do not present inhalation, ingestion, or other chemical hazards.
• Grinding, cutting, machining, burning, or welding may release dusts, fumes, or vapors that present health hazards if exposure limits are exceeded.
• Excessive inhalation of metallic fumes and dusts may cause irritation of eyes, nose, and throat; symptoms may include metallic taste, dryness and irritation of the throat, chills, and fever persisting 12 to 48 hours.
• Chromium is listed as a carcinogen by NTP and OSHA; various forms of dermatitis, inflammation and/or ulceration of the upper respiratory tract, and possibly cancer of nasal passages and lungs are associated with chromium exposure.
• Tungsten: some evidence of pulmonary involvement such as cough.
• Vanadium: eye and respiratory tract irritant.
• Cobalt dust inhalation may cause occupational asthma and interstitial fibrosis; symptoms include productive cough, wheezing, shortness of breath, chest tightness, and weight loss.
• Skin contact can cause irritation or allergic skin rash due to cobalt sensitization.
• Eye contact may cause irritation.
• Fine metal particles produced when ground or sawed can burn; high concentrations in air may present an explosion hazard.
• NFPA Hazard Rating: Health 1; Flammability 0; Reactivity 0.

Personal Protective Equipment

• Wear safety glasses or goggles with side shields; do not wear contact lenses when handling these materials.
• Cloth or leather gloves are recommended when contact with dust or mist is likely.
• Use an appropriate NIOSH-approved respirator if airborne dust concentration exceeds the applicable PEL or TLV.
• Hearing protection may be required.
• Always use machine guards and wear protective clothing to prevent injury in the event of tool breakage.
• Employer should provide an eye wash station within the immediate work area for emergency use.

Safe Handling

• Use only with local exhaust ventilation adequate to limit personal exposure to airborne dust below PEL or TLV levels.
• Wash hands thoroughly after handling and before eating or smoking; wash exposed skin at the end of the work shift.
• Do not shake clothing, rags, or other items to remove dust — remove dust by washing or vacuuming with appropriate filters.
• Clean up spills using methods that avoid dust generation: vacuum with appropriate filters, wet dust mop, or wet clean-up.
• Store in a dry place in a manner that prevents accidental environmental contamination from traces of industrial lubricants or wetting oils.
• Incompatible with strong acids and strong oxidizers.
• Soiled clothing should be laundered separately.
• Dispose of waste material in compliance with federal, state/provincial, and local environmental regulations, or send to an appropriate reclamation facility.

Frequently Asked Questions

Q: What specification standard are these drills manufactured to?
A: The DRILLCO 1180A Aircraft Extension Drills are manufactured to NAS 907 Type C specifications.

Q: What is the overall length of these extension drills?
A: These drills have a 6" length, providing the extended reach needed for hard-to-access drilling locations.

Q: What point angle do these drills use, and why does it matter?
A: These drills feature a 135-degree split point, which is self-centering and reduces walking on the workpiece surface, allowing for faster and more accurate drilling — particularly useful when working in awkward or confined positions.

Q: What types of materials are these drills designed for?
A: The 1180A is designed for drilling holes in medium and high strength materials and is suited for heavy-duty drilling applications.

Q: Can these drills be used with portable drills as well as stationary machines?
A: Yes. The 1180A is designed for both portable and machine drilling, making it versatile for field and shop use.

Q: Are there any critical operating tips for getting the best performance from these drills?
A: Yes — speed, feed, and lubrication are all stated as critical to cutting tool performance with these drills. Proper attention to all three factors will help maximize tool life and cutting efficiency.