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Allegiance® (46)

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Pittsburg Alleghany® (125)

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Countersink (170)

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1-1/2 in (7)

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1-21/32" (1)

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2.625 in (1)

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320 (1)

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5752 (3)

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NO 5 (1)

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NO 2 Morse Taper (1)

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Straight (59)

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1 in (3)

1-1/4 in (2)

3-1/8 in (1)

37/8 in (4)

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Finish

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Uncoated (73)

Pilot Length

0.688 in (1)

0.937 in (2)

1-1/4 in (2)

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1 in (11)

1" (1)

1"" (16)

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3/8" (1)

3/8"" (14)

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5/8 in (7)

5/8"" (19)

7/8"" (12)

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5 (16)

7 (5)

8 (3)

Minimum Bore Diameter

0.08 in (1)

Head Diameter

0.5156 in (1)

13/16 in (1)

Bore Diameter

0.221 in (1)

0.398 in (1)

0.572 in (1)

0.604 in (1)

1-1/2 in (2)

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1.5625 in (1)

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Point Angle

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Flute Type

Conventional Spiral (4)

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Included Angle

100 deg (13)

110 deg (3)

120 deg (1)

60 Deg (69)

60 deg (6)

80 Deg (1)

82 Deg (77)

82 deg (28)

90 Deg (74)

90 deg (10)

Number of Flutes

1 (58)

3 (63)

4 (33)

6 (118)

Zero (18)

Cutting Direction

Right Hand (71)

Material

Carbide (6)

Cobalt (16)

Cobalt HSS (6)

HSS (60)

High Speed Steel (207)

M35 Cobalt (18)

Premium High Speed Steel (1)

Solid Carbide (1)

Tungsten Carbide Tipped (6)

Cutting Capacity

11/64 to 37/64"" (2)

13/64 to 45/64"" (2)

19/64 to 59/64"" (2)

23/64 to 1-3/32"" (2)

3/32 to 9/32"" (2)

5/32 to 29/64"" (2)

9/64 to 11/32"" (2)

Tube Diameter

1 in (1)

1/2 in (2)

1/8 in (1)

3/4 in (1)

Specifications

100 deg Countersink (1)

3 Flute, Straight Shank (2)

60 deg Countersink (1)

82 deg Countersink (2)

82 deg Countersink, 1 Flute (2)

82 deg Countersink, 6 Flutes (2)

90 deg Countersink (1)

90 deg Countersink, 6 Flutes (1)

Applicable Materials

Aluminum, Alloy, Carbon and Tool Steels (3)

Cast Iron, Heat-Treated Steels, Titanium Alloys, Plastic and Wood (2)

Standard Pilot Model Number Compatibility

450 and 453 Series Pilots (2)

Nose Diameter

1/4 in (1)

3/8 in (1)

Includes

1/4 in, 3/8 in, 1/2 in, 3/4 in and 1 in Countersink (2)

1/4 in, 5/16 in, 3/8 in, 1/2 in, 5/8 in, 3/4 in and 1 in Countersink (3)

5/16 in, 3/8 in, 1/2 in and 5/8 in Countersink and Deburring Tools (2)

5/16 in, 3/8 in, 1/2 in, 3/4 in and 1 in Countersink and Deburring Tools (3)

NO 6, NO 8, NO 10, 1/4, 5/16, 3/8 and 1/2 in +1/32 in Oversize Precision Cap Screw Counterbores (1)

NO 6, NO 8, NO 10, 1/4, 5/16, 3/8 and 1/2 in +1/64 in Oversize Precision Cap Screw Counterbores (1)

Spot Face Diameter

0.682 in (1)

1.198 in (2)

1.635 in (1)

1.92 in (1)

Screw Type

Socket Head Cap Screw (4)

Fastener Size

NO 1 (1)

NO 2 (1)

RC (1)

Tube Dash Number

NO 12 (1)

NO 16 (1)

NO 2 (1)

NO 8 (2)

Pilot Diameter

0.14 in (1)

0.265 in (1)

0.406 in (1)

0.67 in (2)

0.782 in (1)

0.95 in (1)

1.21 in (1)

1/4 in (3)

1/8 in (1)

3/16 in (1)

3/8 in (1)

5/16 in (4)

7/16 in (1)

F (1)

BC409844

KEO 53511 Single End Zero Flute Countersink and Deburring Tool, 82 deg, 3/8 in Body, Cobalt, 1/4 in

Compare

BC409823

Pittsburg Alleghany 2284-080 Six Flute Countersink, 3/4" x 1/2", 90 Deg, HSS

Compare

BC409381

KEO 55064 Single End Countersink, 100 deg, 3/8 in Body, 6 Flutes, HSS, 1/4 in

Compare

BC404103

Royal 22550 Countersink

Compare

BC403703

KEO 53539 Single End Straight Shank Zero Flute Countersink and Deburring Tool Set, 5 Pieces, Cobalt, Uncoated

Compare

BC388405

2262-088 Six Flute Countersink, 7/8" x 1/2", 60 Deg, HSS

Compare

BC368676

KEO 55057 Single End Countersink, 90 deg, 3 in Body, 6 Flutes, HSS, 1 in

Compare

BC344437

Pittsburg Alleghany 2257-145 Three Flute Countersink, 1-3/4" x 1/2", 82 Deg, HSS

Compare

BC389583

WIDIA™ METCUT™ 120 Radial Drive Pilot Counterbore, 13/16 in Bore, 4 Flutes, HSS

Compare

BC389584

WIDIA™ METCUT™ 400 Long Pin/Radial Drive Counterbore and Countersink Pilot, 0.5156 in Head, 1/4 in Shank

Compare

BC403701

KEO 53529 Single End Straight Shank Zero Flute Countersink and Deburring Tool Set, 5 Pieces, Cobalt, Uncoated

Compare

BC403700

KEO 53519 Single End Straight Shank Zero Flute Countersink and Deburring Tool Set, 5 Pieces, Cobalt, Uncoated

Compare

BC403191

WIDIA™ METCUT™ 263 Straight Shank Port Contour Cutter

Compare

BC200587

2285-176 Single Flute Countersink, 2" x 3/4", 60 Deg, HSS

Compare

BC198707

Pittsburg Alleghany 2258-129 Three Flute Countersink, 1-1/2" x 1/2", 90 Deg, HSS

Compare

BC133995

2263-040 Six Flute Countersink, 3/8" x 1/4", 82 Deg, HSS

Compare

BC133994

2263-028 Six Flute Countersink, 1/4" x 3/16", 82 Deg, HSS

Compare

BC109564

2286-080 Single Flute Countersink, 3/4" x 1/2", 82 Deg, HSS

Compare

BC109563

2286-064 Single Flute Countersink, 5/8" x 3/8", 82 Deg, HSS

Compare

BC133996

2263-048 Six Flute Countersink, 1/2" x 1/4", 82 Deg, HSS

Compare

BC133998

2263-080 Six Flute Countersink, 3/4" x 1/2", 82 Deg, HSS

Compare

BC137045

2263-036 Six Flute Countersink, 5/16" x 1/4", 82 Deg, HSS

Compare

BC135193

2263-096 Six Flute Countersink, 1" x 1/2", 82 Deg, HSS

Compare

BC134578

2286-144 Single Flute Countersink, 1-1/2" x 3/4", 82 Deg, HSS

Compare

BC109561

2286-048 Single Flute Countersink, 1/2" x 1/4", 82 Deg, HSS

Compare

BC109557

2286-040 Single Flute Countersink, 3/8" x 1/4", 82 Deg, HSS

Compare

BC022457

Greenfield® Chicago Latrobe® CLGR-56748 Single End Machinists Countersink, 1", 82 Deg, HSS, Black Oxide

Compare

BC022445

Greenfield 56744 Premium High Speed Steel Single Flute Countersink Bit, 3/4 in x 2-5/8 in, Black Oxide

Compare

BC022422

Greenfield® Chicago Latrobe® CLGR-56738 Single End Machinists Countersink, 3/8", 82 Deg, HSS, Black Oxide

Compare

BC107054

2286-096 Single Flute Countersink, 1" x 1/2", 82 Deg, HSS

Compare

BC107055

Pittsburg Alleghany 2257-064 Three Flute Countersink, 5/8" x 3/8", 82 Deg, HSS

Compare

BC109551

2286-032 Single Flute Countersink, 1/4" x 1/4", 82 Deg, HSS

Compare

BC108928

2264-144 Six Flute Countersink, 1-1/2" x 3/4", 90 Deg, HSS

Compare

BC107056

Pittsburg Alleghany 2257-072 Three Flute Countersink, 3/4" x 3/8", 82 Deg, HSS

Compare

BC137410

Pittsburg Alleghany 2276-096 Four Flute Machine Countersink, 1" x 1/2", 60 Deg, HSS

Compare

BC138081

Pittsburg Alleghany 2258-144 Three Flute Countersink, 1-1/2" x 3/4", 90 Deg, HSS

Compare

BC188274

Pittsburg Alleghany 2282-160 Six Flute Countersink, 2" x 3/4", 60 Deg, HSS

Compare

BC186389

2287-080 Single Flute Countersink, 3/4" x 1/2", 90 Deg, HSS

Compare

BC186388

2285-080 Single Flute Countersink, 3/4" x 1/2", 60 Deg, HSS

Compare

BC188525

Pittsburg Alleghany 2257-112 Three Flute Countersink, 1-1/4" x 1/2", 82 Deg, HSS

Compare

BC190135

Pittsburg Alleghany 2257-096 Three Flute Countersink, 1" x 1/2", 82 Deg, HSS

Compare

BC194504

WIDIA™ METCUT™ 120 Radial Drive Pilot Counterbore, 7/8 in Bore, 4 Flutes, HSS

Compare

BC194503

WIDIA™ METCUT™ 120 Radial Drive Pilot Counterbore, 1/2 in Bore, 4 Flutes, HSS

Compare

BC191605

WIDIA™ METCUT™ 120 Radial Drive Pilot Counterbore, 3/4 in Bore, 4 Flutes, HSS

Compare

BC177317

KEO 50126 Single End Center Reamer, 1/2 in Dia x 2 in L, 1/4 in Straight Shank, Spiral Flute

Compare

BC171857

2287-048 Single Flute Countersink, 1/2" x 1/4", 90 Deg, HSS

Compare

BC146253

MORSE® 56108 Countersink, 82 deg, 3/8 in Body, 1 Flutes, Carbide, 1/4 in

Compare

BC144402

Pittsburg Alleghany 2258-040 Three Flute Countersink, 3/8" x 1/4", 90 Deg, HSS

Compare

BC138370

2263-088 Six Flute Countersink, 7/8" x 1/2", 82 Deg, HSS

Compare

BC146254

MORSE® 56111 Countersink, 82 deg, 1/2 in Body, 1 Flutes, Carbide, 1/4 in

Compare

BC146256

MORSE® 56114 Countersink, 82 deg, 3/4 in Body, 1 Flutes, Carbide, 3/8 in

Compare

BC151243

2286-900 5 Piece Single Flute Countersink Set, 82 Deg, HSS

Compare

BC151203

2262-144 Six Flute Countersink, 1-1/2" x 3/4", 60 Deg, HSS

Compare

BC148570

Pittsburg Alleghany 2251-900 5 Piece Single Flute Countersink Set, 82 Deg, HSS

Compare

BC409846

KEO 53513 Single End Zero Flute Countersink and Deburring Tool, 82 deg, 5/8 in Body, Cobalt, 3/8 in

Compare

BC409847

KEO 53514 Single End Zero Flute Countersink and Deburring Tool, 82 deg, 3/4 in Body, Cobalt, 3/8 in

Compare

BC589072

KEO 53249 Single End Countersink, 90 deg, 1-1/4 in Body, 1 Flute, HSS, 1/2 in

Compare

BC481057

KEO 55221 Integral Pilot Counterbore, 3/8 in Socket Head Cap Screw Screw, 0.572 in Bore, 5 in OAL, Right Hand

Compare

BC479469

ATI® ATI488C-7 Aircraft Interchangeable Pilot Counterbore, 7/16 in Bore, 1/4 in Shank, 2-13/16 in OAL, 4 Flutes, HSS

Compare

BC476367

KEO 55204 Integral Pilot Counterbore, NO 5 Socket Head Cap Screw Screw, 0.221 in Bore, 3 in OAL, Right Hand

Compare

BC589230

KEO 55011 Single End Countersink, 60 deg, 1 in Body, 6 Flutes, HSS, 1/2 in

Compare

BC589269

KEO 55038 Single End Straight Shank Countersink Set, 7 Pieces, HSS, Uncoated

Compare

BC600308

KEO 55049 Single End Countersink, 90 deg, 3/4 in Body, 6 Flutes, HSS, 1/2 in

Compare

BC600307

KEO 55045 Single End Countersink, 90 deg, 1/2 in Body, 6 Flutes, HSS, 1/4 in

Compare

BC594652

KEO 55056 Single End Countersink, 90 deg, 2-1/2 in Body, 6 Flutes, HSS, 1 in

Compare

BC473519

Pittsburg Alleghany 2283-064 Six Flute Countersink, 5/8" x 1/2", 82 Deg, HSS

Compare

BC473253

Pittsburg Alleghany 2283-144 Six Flute Countersink, 1-1/2" x 3/4", 82 Deg, HSS

Compare

BC442834

2285-040 Single Flute Countersink, 3/8" x 1/4", 60 Deg, HSS

Compare

BC438854

KEO 53522 Single End Zero Flute Countersink and Deburring Tool, 90 deg, 1/2 in Body, Cobalt, 5/16 in

Compare

BC436621

KEO 55223 Integral Pilot Counterbore, 3/8 in Socket Head Cap Screw Screw, 0.604 in Bore, 5 in OAL, Right Hand

Compare

BC442835

2285-048 Single Flute Countersink, 1/2" x 1/4", 60 Deg, HSS

Compare

BC445695

Pittsburg Alleghany 2276-072 Four Flute Machine Countersink, 5/8" x 1/2", 60 Deg, HSS

Compare

BC472049

KEO 55240 Integral Pilot Counterbore Set, 7 Pieces, 3 Flutes, Straight Shank, Cobalt HSS

Compare

BC472048

KEO 55216 Integral Pilot Counterbore, 1/4 in Socket Head Cap Screw Screw, 0.398 in Bore, 4-1/2 in OAL, Right Hand

Compare

BC448590

WIDIA™ Metal Removal® CB-M Miniature Single End Boring Tool, 0.08 in, 3/8 in, 1-1/2 in OAL, Solid Carbide

Compare

BC777132

2263-064 Six Flute Countersink, 5/8" x 3/8", 82 Deg, HSS

Compare

BC787348

KEO 55032 Single End Countersink, 82 deg, 1-1/4 in Body, 6 Flutes, HSS, 1/2 in

Compare

BC844565

2286-176 Single Flute Countersink, 2" x 3/4", 82 Deg, HSS

Compare

BC844564

2287-064 Single Flute Countersink, 5/8" x 3/8", 90 Deg, HSS

Compare

BC844563

2287-040 Single Flute Countersink, 3/8" x 1/4", 90 Deg, HSS

Compare

BC847167

Pittsburg Alleghany 2283-176 Six Flute Countersink, 2" x 3/4", 82 Deg, HSS

Compare

BC855677

Pittsburg Alleghany 2284-096 Six Flute Countersink, 1" x 1/2", 90 Deg, HSS

Compare

BC855680

Keo 2239-023 Straight Shank Zero Flute Countersinks and Deburring Tool, 5/16", 90 Deg, M35 Cobalt

Compare

BC855679

Pittsburg Alleghany 2284-144 Six Flute Countersink, 1-1/2" x 3/4", 90 Deg, HSS

Compare

BC855678

Pittsburg Alleghany 2257-036 Three Flute Countersink, 5/16" x 1/4", 82 Deg, HSS

Compare

BC838921

KEO 53508 Single End Straight Shank Zero Flute Countersink and Deburring Tool Set, 4 Pieces, Cobalt, Uncoated

Compare

BC836356

KEO 51006 Single End Center Reamer, 1 in Dia x 2-3/4 in L, 1/2 in Straight Shank, Spiral Flute

Compare

BC806842

Pittsburg Alleghany 2283-080 Six Flute Countersink, 3/4" x 1/2", 82 Deg, HSS

Compare

BC806841

Pittsburg Alleghany 2283-096 Six Flute Countersink, 1" x 1/2", 82 Deg, HSS

Compare

BC788009

KEO 50129 Single End Center Reamer, 1/2 in Dia x 2 in L, 1/4 in Straight Shank, Spiral Flute

Compare

BC823960

Pittsburg Alleghany 2283-128 Six Flute Countersink, 1-1/4" x 3/4", 82 Deg, HSS

Compare

BC826776

KEO 53028 Single End Straight Shank Countersink Set, 5 Pieces, HSS, Uncoated

Compare

BC832773

KEO 55757 Single End Countersink, 82 deg, 1 in Body, 3 Flutes, Carbide, 1/2 in

Compare

BC830649

Keo 2239-015 Straight Shank Zero Flute Countersinks and Deburring Tool, 3/8", 82 Deg, M35 Cobalt

Compare

BC830648

Keo 2239-012 Straight Shank Zero Flute Countersinks and Deburring Tool, 1/4", 82 Deg, M35 Cobalt

Compare

BC434607

KEO 53518 Single End Straight Shank Zero Flute Countersink and Deburring Tool Set, 4 Pieces, Cobalt, Uncoated

Compare

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