Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

CLEVELAND Screw Machine Drill Bit: #28, 135° Split Point, TiN-Coated Cobalt - Cobalt Screw-Machine Length Drill Bits for Deep Hole-Drilling
CLEVELANDCobalt Screw-Machine Length Drill Bits for Deep Hole-Drilling

CLEVELAND Screw Machine Drill Bit: #28, 135° Split Point, TiN-Coated Cobalt

The CLEVELAND Screw Machine Drill Bit #28 is a TiN-Coated Cobalt, Fast Spiral drill bit with a 135° Split Point, designed for deep hole-drilling. With a diameter of 0.1405 inches (MPN C14389), it delivers precise…

SKU 3G-OTH-413529

Brand
CLEVELAND
Item
Screw Machine Drill Bit: #28, 135° Split Point, TiN-Coated Cobalt
Category
Cobalt Screw-Machine Length Drill Bits for Deep Hole-Drilling
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

CLEVELAND
Manufacturer Part Number
C14389
Type
TiN-Coated Cobalt, Fast Spiral
Split Point
135°
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

CLEVELAND Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CLEVELAND Screw Machine Drill Bit #28 is a TiN-Coated Cobalt, Fast Spiral drill bit with a 135° Split Point, designed for deep hole-drilling. With a diameter of 0.1405 inches (MPN C14389), it delivers precise, consistent performance in demanding industrial applications.

Frequently Asked Questions

What is the CLEVELAND Screw Machine Drill Bit #28 used for?

The CLEVELAND #28 screw-machine drill bit is designed for deep-hole drilling in metalworking applications. Its fast-spiral flute geometry efficiently evacuates chips, making it suitable for automated machining centers and production environments where precision and chip clearance are critical.

What are the specifications of the CLEVELAND C14389 drill bit?

The CLEVELAND C14389 is a #28 screw-machine length drill bit with a 0.1405-inch diameter. It features a 135° split point for reduced walking, TiN-coated cobalt construction for heat resistance, and a fast-spiral flute design optimized for deep-hole drilling in ferrous materials.

Where to buy CLEVELAND C14389 drill bits worldwide?

3G Electric supplies the CLEVELAND C14389 TiN-coated cobalt drill bit worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this precision tool.

How to select the correct screw-machine length drill bit for deep-hole drilling?

Select a bit with a split point (like CLEVELAND's 135°) to prevent walking on contact. For deep holes, choose a fast-spiral flute design and a cobalt substrate with TiN coating for heat resistance. Match the diameter (e.g., #28 / 0.1405 in) to your hole tolerance requirements.

Used in

Common applications for CLEVELAND
Aerospace manufacturing — CLEVELAND NAS-spec aircraft extension drills for drilling fastener holes in aluminum airframe panels.
Bridge construction — CLEVELAND Morse-taper shank bridge reamers for enlarging bolt holes in structural steel.
Automotive production — CLEVELAND chucking reamers for precision finishing of engine component bores.
General metalworking — CLEVELAND single-flute countersinks for deburring holes in mild steel parts.
Tool and die making — CLEVELAND interchangeable-pilot counterbores for creating recesses for socket head cap screws.
Maintenance repair — CLEVELAND cobalt aircraft extension drills for drilling hardened steel in equipment repairs.

CLEVELAND Products

3G Electric supplies CLEVELAND cobalt screw-machine length drill bits for deep hole-drilling. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
CLEVELAND Screw Machine Drill Bit: #27, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14388). Key specifications — attr1233209: 0.1440.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #27, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14388). Key specifications — attr1233209: 0.1440.
CLEVELAND Screw Machine Drill Bit: #29, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14390). Key specifications — attr1233209: 0.1360.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #29, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14390). Key specifications — attr1233209: 0.1360.
CLEVELAND Screw Machine Drill Bit: #26, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14387). Key specifications — attr1233209: 0.1470.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #26, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14387). Key specifications — attr1233209: 0.1470.
CLEVELAND Screw Machine Drill Bit: #32, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14393). Key specifications — attr1233209: 0.1160.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #32, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14393). Key specifications — attr1233209: 0.1160.
CLEVELAND Screw Machine Drill Bit: #31, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14392). Key specifications — attr1233209: 0.1200.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #31, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14392). Key specifications — attr1233209: 0.1200.
CLEVELAND Screw Machine Drill Bit: #25, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14386). Key specifications — attr1233209: 0.1495.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #25, 135° Split Point, TiN-Coated Cobalt, Fast Spiral (MPN C14386). Key specifications — attr1233209: 0.1495.

More from CLEVELAND

View all CLEVELAND parts
CLEVELAND Screw Machine Drill Bit: #2, 135° Split Point, TiCN-Coated Cobalt, Fast Spiral (MPN C15292). Key specifications — attr1233209: 0.2210.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #2, 135° Split Point, TiCN-Coated Cobalt, Fast Spiral (MPN C15292). Key specifications — attr1233209: 0.2210.
CLEVELAND Screw Machine Drill Bit: #14, 135° Split Point, TiAlN-Coated Cobalt, Fast Spiral (MPN C15104). Key specifications — attr1233209: 0.1820.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #14, 135° Split Point, TiAlN-Coated Cobalt, Fast Spiral (MPN C15104). Key specifications — attr1233209: 0.1820.
CLEVELAND Screw Machine Drill Bit: Letter Q, 135° Split Point, TiAlN-Coated Cobalt, Fast Spiral (MPN C15146). Key specifications — attr1233209: 0.3320.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: Letter Q, 135° Split Point, TiAlN-Coated Cobalt, Fast Spiral (MPN C15146). Key specifications — attr1233209: 0.3320.
CLEVELAND Screw Machine Drill Bit: #9, 135° Split Point, TiAlN-Coated Cobalt, Fast Spiral (MPN C15099). Key specifications — attr1233209: 0.1960.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #9, 135° Split Point, TiAlN-Coated Cobalt, Fast Spiral (MPN C15099). Key specifications — attr1233209: 0.1960.
CLEVELAND Screw Machine Drill Bit: #38, 135° Split Point, TiCN-Coated Cobalt, Fast Spiral (MPN C15328). Key specifications — attr1233209: 0.1015.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #38, 135° Split Point, TiCN-Coated Cobalt, Fast Spiral (MPN C15328). Key specifications — attr1233209: 0.1015.
CLEVELAND Screw Machine Drill Bit: #28, 135° Split Point, Straw/Bronze Cobalt, Fast Spiral (MPN C14268). Key specifications — attr1233209: 0.1405.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: #28, 135° Split Point, Straw/Bronze Cobalt, Fast Spiral (MPN C14268). Key specifications — attr1233209: 0.1405.
CLEVELAND Screw Machine Drill Bit: 41/64", 135° Split Point, TiCN-Coated Cobalt, Fast Spiral (MPN C15287). Key specifications — attr1233209: 0.6406.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: 41/64", 135° Split Point, TiCN-Coated Cobalt, Fast Spiral (MPN C15287). Key specifications — attr1233209: 0.6406.
CLEVELAND Screw Machine Drill Bit: 15/64", 135° Split Point, TiAlN-Coated Cobalt, Fast Spiral (MPN C15061). Key specifications — attr1233209: 0.2344.
CLEVELAND
CLEVELAND Screw Machine Drill Bit: 15/64", 135° Split Point, TiAlN-Coated Cobalt, Fast Spiral (MPN C15061). Key specifications — attr1233209: 0.2344.