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

CLEVELAND Aircraft Extension Drill: #21, 12" Overall Lg, 135° Split Point - NAS-Spec Cobalt Aircraft-Extension Drill Bits
CLEVELANDNAS-Spec Cobalt Aircraft-Extension Drill Bits

CLEVELAND Aircraft Extension Drill: #21, 12" Overall Lg, 135° Split Point

The CLEVELAND Aircraft Extension Drill: #21 is an NAS-Spec Cobalt Aircraft-Extension Drill Bit, model NAS 907 Type J. It features a 0.1590-inch diameter, 12-inch overall length, and a 135° split point with a…

SKU 3G-OTH-198870

Brand
CLEVELAND
Item
Aircraft Extension Drill: #21, 12" Overall Lg, 135° Split Point
Category
NAS-Spec Cobalt Aircraft-Extension Drill Bits
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
C08175
Type
Straw/Bronze Cobalt
Overall Lg
12"
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 Aircraft Extension Drill: #21 is an NAS-Spec Cobalt Aircraft-Extension Drill Bit, model NAS 907 Type J. It features a 0.1590-inch diameter, 12-inch overall length, and a 135° split point with a straw/bronze cobalt finish (MPN C08175).

Frequently Asked Questions

What is the CLEVELAND Aircraft Extension Drill #21 used for?

The CLEVELAND Aircraft Extension Drill #21 is used for precision drilling in aerospace and industrial applications where deep, tight-tolerance holes are required. Its 12-inch overall length and 135° split point allow efficient cutting in hard materials, while the straw/bronze cobalt finish provides heat resistance and durability.

What are the specifications of the CLEVELAND C08175 drill bit?

The CLEVELAND C08175 is an NAS 907 Type J aircraft-extension drill bit with a 0.1590-inch diameter, 12-inch overall length, and 135° split point. It features a straw/bronze cobalt finish for enhanced wear resistance. This bit is designed for demanding aerospace drilling tasks.

Where to buy CLEVELAND aircraft extension drill bits worldwide?

3G Electric supplies CLEVELAND aircraft extension drill bits worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source genuine NAS-spec tooling like the C08175 and deliver to your facility. Contact us for pricing and lead time on this item.

How to select the right aircraft extension drill bit for aerospace work?

Select an aircraft extension drill bit based on hole diameter, material hardness, and reach requirements. For deep holes in tough alloys, choose a cobalt bit with a 135° split point like the CLEVELAND #21. Ensure the bit meets NAS specs (e.g., NAS 907 Type J) for aerospace compliance.

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 nas-spec cobalt aircraft-extension drill bits. 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 Aircraft Extension Drill: #20, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08176). Key specifications — attr1234097: 0.1610; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #20, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08176). Key specifications — attr1234097: 0.1610; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #19, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08177). Key specifications — attr1234097: 0.1660; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #19, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08177). Key specifications — attr1234097: 0.1660; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #23, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08148). Key specifications — attr1234097: 0.1540; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #23, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08148). Key specifications — attr1234097: 0.1540; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #22, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08149). Key specifications — attr1234097: 0.1570; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #22, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08149). Key specifications — attr1234097: 0.1570; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #29, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08171). Key specifications — attr1234097: 0.1360; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #29, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08171). Key specifications — attr1234097: 0.1360; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #16, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08179). Key specifications — attr1234097: 0.1770; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #16, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08179). Key specifications — attr1234097: 0.1770; attr1234190: NAS 907 Type J.

More from CLEVELAND

View all CLEVELAND parts
CLEVELAND Aircraft Extension Drill: #41, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08102). Key specifications — attr1234097: 0.0960; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #41, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08102). Key specifications — attr1234097: 0.0960; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #31, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08111). Key specifications — attr1234097: 0.1200; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #31, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08111). Key specifications — attr1234097: 0.1200; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #40, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08167). Key specifications — attr1234097: 0.0980; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #40, 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08167). Key specifications — attr1234097: 0.0980; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #21, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08138). Key specifications — attr1234097: 0.1590; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #21, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08138). Key specifications — attr1234097: 0.1590; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #39, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08103). Key specifications — attr1234097: 0.0995; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #39, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08103). Key specifications — attr1234097: 0.0995; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: 7/64", 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08168). Key specifications — attr1234097: 0.1094; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: 7/64", 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08168). Key specifications — attr1234097: 0.1094; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: 7/32", 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08184). Key specifications — attr1234097: 0.2188; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: 7/32", 12" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08184). Key specifications — attr1234097: 0.2188; attr1234190: NAS 907 Type J.
CLEVELAND Aircraft Extension Drill: #29, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08112). Key specifications — attr1234097: 0.1360; attr1234190: NAS 907 Type J.
CLEVELAND
CLEVELAND Aircraft Extension Drill: #29, 6" Overall Lg, 135° Split Point, Straw/Bronze Cobalt (MPN C08112). Key specifications — attr1234097: 0.1360; attr1234190: NAS 907 Type J.