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and Sioux Tools Inc.
 
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Aerospace Tools > Air Drilling Tools > Countersinks

This page contains information and specifications for our
Diamond Tipped Countersinks and our HSS and Carbide Tipped Countersinks.
Scroll down to find the tool you need, or email us for further details.

PCD Tipped Countersinks

PCD tipped countersinks are designed for cutting highly abrasive materials and are recommended for use with composite materials in which high speed steel will not perform satisfactorily. Replaceable pilot construction allows for replacement of damaged pilots and substitution of various pilot diameters with the same countersink.

 • PCD Tipped Countersinks – 2-Flute – Interchangeable Pilot

• Double Flutes
• 100°/130° Angles
• Threaded Shank
• High Performance
• Precision Engineering
• Top Quality
• Competitive Prices

PCD countersinks 2-flute
Part No. (100°)
Part No. (130°)
Body Diam.
Pilot
Flutes
Angle Thread
3/8" 0.125 2 100°/130° 1/4" - 28
1/2" 0.125 2 100°/130° 1/4" - 28
5/8" 0.125 2 100°/130° 1/4" - 28
3/4" 0.188 2 100°/130° 7/16" - 20
7/8" 0.188 2 100°/130° 7/16" - 20
1" 0.188 2 100°/130° 7/16" - 20
1 1/4" 0.188 2 100°/130° 7/16" - 20
 

 

 • PCD Tipped Countersinks – 3-Flute – Interchangeable Pilot

• 3 Flutes
• 100°/130° Angles
• Threaded Shank
• High Performance
• Precision Engineering
• Top Quality
• Competitive Prices

PCD countersinks 3-flute
Part No. (100°)
Part No. (130°)
Body Diam.
Pilot
Flutes
Angle Thread
1/2" 0.125 3 100°/130° 1/4" - 28
5/8" 0.125 3 100°/130° 1/4" - 28
3/4" 0.188 3 100°/130° 7/16" - 20
1" 0.188 3 100°/130° 7/16" - 20
1 1/4" 0.188 3 100°/130° 7/16" - 20
 

 

 • PCD Tipped Countersinks – 2-Flute – Integral Pilot

• 2 Flutes
• 100°/130° Angles
• Threaded Shank
• High Performance
• Precision Engineering
• Top Quality
• Competitive Prices

PCD countersinks integral pilot
Part No. (100°)
Part No. (130°)
Body Diam.
Pilot
Flutes
Angle Thread
3/8" 0.125 2 100°/130° 1/4" - 28
3/8" 0.128 2 100°/130° 1/4" - 28
3/8" 0.139 2 100°/130° 1/4" - 28
3/8" 0.159 2 100°/130° 1/4" - 28
1/2" 0.125 2 100°/130° 1/4" - 28
1/2" 0.128 2 100°/130° 1/4" - 28
1/2" 0.156 2 100°/130° 1/4" - 28
1/2" 0.188 2 100°/130° 1/4" - 28
1/2" 0.193 2 100°/130° 1/4" - 28
1/2" 0.239 2 100°/130° 1/4" - 28
 

 • PCD Tipped Countersinks – 2-Flute – Integral Pilot – Metric


Part No. (100°)
Part No. (130°)
Body Diam.
Pilot
Flutes
Angle Thread
10.0 3.0 2 100°/130° M6 x 1.0
14.0 3.0 2 100°/130° M8 x 1.0
17.0 4.0 2 100°/130° M8 x 1.0
 

 

 • PCD Countersink Drills

Diamond tipped countersink drills for convenient drilling and countersinking in one easy step.
Available with threaded or plain shanks.

Call or email for further information.

PCD countersink drill
 

US Industrial Tool HSS Countersinks

 • US Industrial Stop Countersinks – Standard Series


Our US Industrial Stop Countersinks are available in various sizes

• Hardened bushing rated to 3000 RPM
• For flush riveting, rivet shaving and collar removal
• 1/4" Shank fits any power tool chuck
• 1/4" x 28 Female threaded spindle takes replaceable pilot cutter, hollow cutter, rivet shaver bits etc.
• Hardened and ground precision spindle
• Adjustable in 0.001 increments
• Wrench flats on spindle to aid in cutter removal
• Can be fitted with other skirt styles
• 9/32" Shaft travel
• 4" Length
• Made in USA

 

HSS stop countersinks
Part Nos. and Specification
TP61: Standard Stop Countersink, with TP61-S skirt. Weight: 0.28 lbs
TP61K: Kit includes 1 ea: TP61; TP62-21; 30; 40; Storage tube. Weight: 0.34 lbs
TP61MM: Standard Countersink with 6mm thread. Weight: 0.25 lbs
TP61WF: Standard Countersink with TP61WF-1 polished steel skirt. Weight: 0.31 lbs
 

 Jumbo Countersink


• Rated to 3000 RPM
• For flush riveting, rivet shaving and collar removal
• 3/8" Shank fits any power tool chuck
• 3/8" x 24 Female threaded spindle
• Cutter capacity: 1 1/4"
• Adjustable in 0.001 increments
• Wrench flats on spindle to aid in cutter removal
• Can be fitted with other skirt styles
• 1/2" Shaft travel
• Bearings
• Uses TP60 Series Countersink pilots

 

jumbo stop countersinks

 • US Industrial Stop Countersinks – High Speed Series


Our high speed series US Industrial Stop Countersinks have ball bearings supporting the spindle.

• 6,000 to 10,000 RPM, depending upon model
• For flush riveting, rivet shaving and collar removal
• 1/4" Shank fits any power tool chuck
• 1/4" x 28 Female threaded spindle takes replaceable pilot cutter, hollow cutters, rivet shaver bits etc.
• Hardened and ground precision spindle
• Adjustable in 0.001 increments
• Wrench flats on spindle to aid in cutter removal
• Can be fitted with other skirt styles
• 9/32" Shaft travel
• 4" Length
• Made in USA

 

HSS stop countersinks - high speed
Part Nos. and Specification
TP61B: High Speed Stop Countersink, with TP61-S skirt. Rated to: 6000 RPM
Needle bearing. Weight: 0.28 lbs
TP61BB: High Speed Stop Countersink, with TP61-S skirt. Rated to: 10,000 RPM
Double ball bearing. Weight: 0.31 lbs
TP61BMM: High Speed Stop Countersink, with TP61-S skirt. Rated to: 6000 RPM
6 mm Thread. Needle bearing. Weight: 0.31 lbs
TP61BBMM: High Speed Stop Countersink, with TP61-S skirt. Rated to: 10,000 RPM
6 mm Thread. Double ball bearing. Weight: 0.31 lbs
TP61BWF: High Speed Countersink with TP61WF-1 polished steel skirt.
Rated to 6000 RPM. Double ball bearing. Weight: 0.34 lbs
TP61BWFT: High Speed Countersink with TP61WF-1T Teflon faced skirt.
Rated to 6000 RPM. Double ball bearing. Weight: 0.35 lbs
 

 • US Industrial Integral Pilot Stop Countersinks


Our US Industrial countersink cutters fit in all adjustable stop, or micro-stop type countersinking units with 1/4" x 28 threads. Each unit is precision ground to exacting tolerances and relieved to ensure concentricity of countersink angle.

• High speed steel construction (standard) three flutes
• Carbide tipped (optional) – for longer life – two flutes
• Diamond bonded for non-metallic materials (TP62D)
• 1/4" x 28 threaded shank
• Use with all TP61 Series stop countersinks

HSS stop countersinks

 • Integral Pilot Stop Countersinks for Briles Tension Head Rivets


In conformance with military STD #MS14218, Briles Rivet Corp. STD #BRFZ, Boeing Aircraft #BACR15FV, and VOI-Shan VRFZ rivet standards

• High speed steel construction
• 1/4" x 28 threaded shank
• Use with all TP61 Series stop countersinks

Briles tension head rivet countersinks

 • Jumbo Countersink Pilots – 3-Flute


• High speed steel construction
• 100° angle
• 3 Flute
• 3/8" x 24 threaded shank

Jumbo countersink pilot bit

 • Stop Countersink Pilot Kit


Stop countersink pilot kits available.

TP62K Includes: TP62-40; TP62-30; TP62-21; TP62-3/16

Call or email for further information.

Countersink pilot kit

 • Rosebud Deburring bit – 3-Flute


Especially suited for use in angle drills and angle attachments for hole deburring in close quarters. Precision ground angle to ensure concentricity.

• High speed steel construction
• 1/4" x 28 threaded shank
• 3/4" OAL
• 3/8", 7/16" and 1/2" diameters available
• 100° angle

Rosebud deburring bit

 • Steel Countersinks – 6-Flute


• High speed steel construction
• 100° angle: 5/16" and 3/8" diameter
• 120° angle: 3/8" diameter
• 6 Flute
• Shank: 1/4"
• Length: 1 3/4"

us industrial steel countersinks


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PCD countersinks

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