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Cobra Carbide 51304 3.30mm non-coolant drill bit, silver-grey finish

Cobra Carbide

Cobra Carbide 51304 3xD High Perf Non-Coolant Drill 3.30mm

SKU CH-FYHW-F0VC9

A 3.30 mm solid-carbide drill with 3× diameter flute length for non-coolant high-performance drilling

  • 3xD reach drills deeper holes without pecking
  • Non-coolant design simplifies setup on any machine
  • 30 mm diameter matches precise metric specs
  • Decimal equivalent .1299 in aids quick tool selection
  • Cobra Carbide 51304 built for high-performance drilling

Application and User

The Cobra Carbide 51304 is a 3.30 mm solid-carbide drill built for 3xD drilling without coolant. It suits CNC operators and machinists who need precise holes in steel or alloys where flood coolant is not available. The 0.1299 inch decimal equivalent helps programmers set tool offsets quickly. California Proposition 65 warnings apply to this product.

Suitability and Limits

This drill fits shops running high-speed spindles that can maintain the feed rates carbide demands at 3xD depth. It is not for buyers who need coolant-through tooling for deeper holes or difficult chip evacuation. Hand-drill users and low-rigidity setups should look at something else because carbide shanks fracture under side load. The manufacturer ships direct on orders of 75 or more.

Deciding Specification

The 3.30 mm diameter and 3xD length-to-diameter ratio are the single figures that decide fit. Match the drill to the hole size and depth the print calls for; no other dimension in the data overrides that choice. The non-coolant design means chip removal relies on flute geometry and spindle speed alone.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $28.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameCOBRA CARBIDE

Questions about this item

Will the 3.30 mm diameter match the pilot holes in my existing jig?

The drill is ground to 3.30 mm (decimal equivalent 0.1299 in), so it will fit any jig bored for that exact size.

How can I confirm the 51304 is cutting correctly once installed?

Expect clean, round holes at 3xD depth with no coolant; consistent chip evacuation and steady torque indicate proper performance.

Does the package include only the 51304 drill or are collets and coolant supplied?

The box contains the single 3xD non-coolant drill; collets, holders and any cutting fluid must be purchased separately.

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