480N NITRO® Heavy-Duty Jobber Drill (NAS Type B) – Pack of 96

NITRO® Drill (NAS Type B) — Heavy-Duty HSS Drilling for Medium and High Strength Materials

The DRILLCO NITRO® Drill (NAS Type B) is a heavy-duty high speed steel drill bit engineered for superior performance over standard HSS drills when working in medium and high strength materials. Built to NAS 907 Type B specifications, it features a 135° Split Point and a Black & Gold surface treatment that increases lubricity while reducing corrosion and breakage. The drill is designed for both handheld portable drill and CNC/fixed spindle applications, making it a versatile choice for contractors and metalworking professionals. Speed, feed, and lubrication are all critical to maximizing cutting tool performance with this bit.

Technical Specifications

Available Sizes — 400N Series (Fractional Jobber Length)

NITRO® Series Line Overview

Material Composition (SDS — Section 3)

Physical & Chemical Properties (SDS — Section 9)

Unlike standard HSS drills, the NITRO® NAS Type B features a Black & Gold surface treatment applied to both the body and flute, providing better resistance to corrosion and breakage while increasing lubricity and reducing chipping and flaking. The 135° Split Point geometry offers a self-centering advantage over conventional 118° points, making it better suited for curved surfaces and harder materials where walking at the start of a hole is a concern. The NAS Type B specification and M2 HSS construction position this drill above general-purpose bright-finish or black oxide alternatives for demanding metalworking applications.

Key Features & Benefits

135° Split Point

The 135° Split Point is self-centering, which reduces or eliminates walking when starting a hole — particularly valuable on curved or hardened surfaces. This geometry also allows for faster cutting and easier penetration compared to a conventional 118° point, reducing the force required at the start of each hole.

Black & Gold Surface Treatment on Body and Flute

The Black & Gold finish is applied to both the body and flute of the drill, maximizing lubricity throughout the cut. This treatment provides better resistance to corrosion and breakage while reducing chipping and flaking, extending tool life in demanding applications across most material groups.

Premium M2 High Speed Steel Construction

All NITRO® drills are manufactured from premium quality M2 High Speed Steel, the material of choice for heavy-duty drilling across a wide range of material groups including stainless steel. M2 HSS provides the hardness and wear resistance needed to maintain cutting performance under sustained use.

NAS Type B Specification

Built to NAS 907 Type B standards, this drill is engineered for heavy-duty applications where standard HSS drills fall short. The NAS specification ensures consistent geometry and performance characteristics suited to both production and field environments.

Handheld and CNC Compatible

The NITRO® NAS Type B is designed for use in portable handheld drills as well as fixed spindle applications such as CNC machines and drill presses. This dual compatibility gives contractors and machinists flexibility to use the same drill across different setups without switching tool families.

Complete Series Availability

The NITRO® line is available in Jobber Length (400N, 440N, 480N), Mechanic's Length (350N), Screw Machine Length (300N), and S&D configurations, as well as sets containing 29 drills from 1/16" to 1/2" by 64ths. The 350N and 400N series are also available in blister packs for convenient jobsite purchasing.

Common Applications

Heavy-Duty Drilling in Medium and High Strength Steels

The NITRO® NAS Type B is specifically recommended for drilling in medium and high strength materials where standard HSS drills wear prematurely or fail to maintain hole quality.

Stainless Steel Drilling

The M2 HSS construction and Black & Gold surface treatment make the NITRO® suitable for drilling stainless steel, a material group that demands higher lubricity and wear resistance than standard HSS can provide.

CNC and Fixed Spindle Production Drilling

The NAS Type B geometry and consistent M2 HSS construction make this drill well-suited for fixed spindle CNC and drill press applications where repeatable hole quality and tool life are critical to production efficiency.

Handheld Portable Drilling on Hard Materials

The 135° Split Point's self-centering action is particularly beneficial in handheld drilling scenarios on harder materials, where maintaining starting position without a center punch or pilot hole is a practical advantage.

Wide Range of Material Groups

The NITRO® line is recommended for heavy-duty drilling across a wide range of material groups, making it a versatile choice for contractors who encounter varied base materials across different job sites.

Product Documents

• Safety Data Sheet (SDS) — High Speed Steel Cutting Tools
• NITRO® Drills Product Sheet
• DRILLCO / WALTER Productivity Tooling Solutions Linecard

Safety Data Summary

Hazard Information

• During normal operation and usage, high speed steel products do not present inhalation, ingestion, or other chemical hazards.
• Operations such as grinding, cutting, machining, burning, and 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: listed as a carcinogen by NTP and OSHA; associated with dermatitis, inflammation and/or ulceration of the upper respiratory tract, and possibly cancer of nasal passages and lungs.
• Tungsten: some evidence of pulmonary involvement such as cough.
• Vanadium: eye and respiratory tract irritant.
• Cobalt dust is identified as the most probable cause of respiratory diseases including occupational asthma and interstitial fibrosis.
• Skin contact: can cause irritation or allergic skin rash due to cobalt sensitization.
• Eye contact: may cause eye 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.
• Incompatible materials: Strong Acids, Strong Oxidizers.
• Chromium and Vanadium are subject to SARA Title III Section 313 supplier notification requirements.
• Not hazardous under OSHA Hazard Communication Standard 29 CFR 1910.1200 in solid form; dust generated during use may be hazardous.

Personal Protective Equipment

• Protective gloves: Cloth or leather gloves recommended when contact with dust or mist is likely.
• Eye protection: Safety glasses or goggles with side shields required; contact lenses should not be worn. Employer should provide an eye wash station within the immediate work area.
• Respiratory protection: Use an appropriate NIOSH approved respirator if airborne dust concentration exceeds the applicable PEL or TLV; all requirements of 29 CFR 1910.134 must be met.
• Hearing protection may be required.
• Always use machine guards and wear safety glasses and protective clothing to prevent injury in the event of tool breakage.
• Soiled clothing should be laundered separately.

Safe Handling

• Perform grinding, cutting, machining, burning, and welding operations in well-ventilated areas; use local exhaust ventilation adequate to limit personal exposure to airborne dust below PEL or TLV.
• 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 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.
• Dispose of waste material in compliance with federal, state/provincial, and local environmental regulations; send to an appropriate reclamation facility if available.
• First Aid — Inhalation: Remove from exposure and seek medical attention if symptoms of pulmonary involvement develop.
• First Aid — Skin: Wash affected areas thoroughly with soap and water; seek medical attention if irritation or rash persists.
• First Aid — Eyes: Flush with copious amounts of water; seek medical attention if irritation persists.
• First Aid — Ingestion: Dilute with a large amount of water, induce vomiting, and seek medical attention.
• Persons with pre-existing respiratory disease may be at increased risk from exposure.
• DOT, IATA, and AFI: Not regulated by these modes of transportation.

Frequently Asked Questions

Q: What makes the NITRO® NAS Type B better than a standard HSS drill?
A: The NITRO® NAS Type B offers superior performance over standard HSS drills through its heavy-duty design, premium M2 High Speed Steel construction, Black & Gold surface treatment on both the body and flute for maximum lubricity, and a 135° Split Point that reduces walking and improves penetration ease.

Q: Can this drill be used in both handheld and CNC applications?
A: Yes. The NITRO® NAS Type B is designed for use in portable handheld drills as well as fixed spindle applications including CNC machines and drill presses.

Q: What materials is the NITRO® NAS Type B recommended for?
A: It is recommended for heavy-duty drilling in medium and high strength materials, including stainless steel, across a wide range of material groups.

Q: What sizes are available in the 400N Jobber Length series?
A: The 400N series is available in fractional sizes from 1/16" through 1/2", with individual EDP numbers for each size. The 350N and 400N series are also available in blister packs. Sets containing 29 drills from 1/16" to 1/2" by 64ths are available as well.

Q: What length configurations are available in the NITRO® line?
A: The NITRO® line is available in Jobber Length (400N, 440N, 480N), Mechanic's Length (350N, 1045N), Screw Machine Length (300N), and S&D configurations, as well as sets.

Q: Are there any critical operating tips for getting the best performance from this drill?
A: Yes — speed, feed, and lubrication are all identified as critical to cutting tool performance. Using appropriate metal cutting lubricants is recommended to manage heat during the machining operation and extend drill life.