System of Measurement System of Measurement |
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Finish Finish |
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Number of Flutes Number of Flutes |
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 | 4 |
Individual/Set Individual/Set |
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Shank Type Shank Type |
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 | Round |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Shank Diameter Shank Diameter |
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Body Diameters Included Body Diameters Included |
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About Countersinks
Countersinks cut a cone-shaped opening to install screws and rivets flush with a surface or hold workpieces between centers on a lathe. They can also be used for chamfering and deburring.
More
Long-Reach Extensions for Countersink Heads
Increase the reach of long-reach countersink heads (sold separately). These extensions are compatible with 82°, 90°, and 100° angle countersink heads.
| Overall Lg. | Body Dia. | For Shank Thread Size | Shank Dia. | For Use On | Each | |
Uncoated Carbon Steel | ||||||
|---|---|---|---|---|---|---|
| 4" | 3/8" | 1/4"-28 | 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 6" | 3/8" | 1/4"-28 | 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 12" | 3/8" | 1/4"-28 | 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
Carbon Steel Drill-Bit Countersinks for Screws
Only for use on wood and plastic, these countersinks attach to a drill bit (sold separately) to countersink and drill holes at the same time. They attach to the drill bit with two set screws and the position can be adjusted for different screw lengths. The 82° countersink angle is compatible with the profile of flat- and oval-head inch screws.
Optional collar (not included) controls the cutting depth of your countersink. It attaches with two set screws.
For technical drawings and 3-D models, click on a part number.
Countersinks | ||||||||||
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82° Countersink Angle | Optional Collars | |||||||||
| For Screw Size | For Drill Bit Size | Body Dia. | Overall Lg. | For Use On | Each | OD | Wd. | Each | ||
Uncoated Carbon Steel | ||||||||||
4 Flute | ||||||||||
| No. 3 | 3/32" | 1/4" | 3/4" | Plastic, Wood | 0000000 | 00000 | 1/2" | 1/4" | 0000000 | 00000 |
| No. 4 | 7/64" | 5/16" | 7/8" | Plastic, Wood | 0000000 | 0000 | 9/16" | 1/4" | 0000000 | 0000 |
| No. 5 | 1/8" | 3/8" | 7/8" | Plastic, Wood | 0000000 | 0000 | 5/8" | 1/4" | 0000000 | 0000 |
| No. 6 | 9/64" | 3/8" | 7/8" | Plastic, Wood | 0000000 | 0000 | 5/8" | 1/4" | 0000000 | 0000 |
| No. 7 | 5/32" | 3/8" | 7/8" | Plastic, Wood | 0000000 | 0000 | 5/8" | 1/4" | 0000000 | 0000 |
| No. 7 | 5/32" | 1/2" | 7/8" | Plastic, Wood | 0000000 | 0000 | 3/4" | 1/4" | 0000000 | 0000 |
| No. 8 | 11/64" | 3/8" | 7/8" | Plastic, Wood | 0000000 | 0000 | 5/8" | 1/4" | 0000000 | 0000 |
| No. 9 | 3/16" | 3/8" | 7/8" | Plastic, Wood | 0000000 | 0000 | 5/8" | 1/4" | 0000000 | 0000 |
| No. 9 | 3/16" | 1/2" | 7/8" | Plastic, Wood | 0000000 | 0000 | 3/4" | 1/4" | 0000000 | 0000 |
| No. 9 | 3/16" | 5/8" | 1 1/16" | Plastic, Wood | 0000000 | 00000 | 7/8" | 1/4" | 0000000 | 0000 |
| No. 10 | 13/64" | 3/8" | 7/8" | Plastic, Wood | 0000000 | 0000 | 5/8" | 1/4" | 0000000 | 0000 |
| No. 10 | 13/64" | 7/16" | 7/8" | Plastic, Wood | 0000000 | 0000 | 11/16" | 1/4" | 0000000 | 0000 |
| No. 10 | 13/64" | 1/2" | 7/8" | Plastic, Wood | 0000000 | 0000 | 3/4" | 1/4" | 0000000 | 0000 |
| No. 12 | 7/32" | 3/8" | 7/8" | Plastic, Wood | 0000000 | 0000 | 5/8" | 1/4" | 0000000 | 0000 |
| No. 12 | 7/32" | 1/2" | 7/8" | Plastic, Wood | 0000000 | 0000 | 3/4" | 1/4" | 0000000 | 0000 |
| No. 14 | 1/4" | 1/2" | 7/8" | Plastic, Wood | 0000000 | 0000 | 3/4" | 1/4" | 0000000 | 0000 |
| No. 16 | 1/4" | 5/8" | 1 1/16" | Plastic, Wood | 0000000 | 00000 | 7/8" | 1/4" | 0000000 | 0000 |
| No. 16 | 9/32" | 5/8" | 1 1/16" | Plastic, Wood | 0000000 | 00000 | 7/8" | 1/4" | 0000000 | 0000 |
| No. 18 | 5/16" | 5/8" | 1 1/16" | Plastic, Wood | 0000000 | 00000 | 7/8" | 1/4" | 0000000 | 0000 |
Carbon Steel Drill-Bit Countersink Sets
For use with plastic and wood, the countersinks in these sets attach to a drill bit (sold separately) so you can drill and countersink holes in one step. They attach to the drill bit with two set screws and the position can be adjusted for different screw lengths. The 82° countersink angle is compatible with the profile of flat- and oval-head inch screws.
Optional collar (not included) controls the cutting depth of your countersink. It attaches with two set screws.
For technical drawings and 3-D models, click on a part number.
82° Countersink Angle | |||||||
|---|---|---|---|---|---|---|---|
| Number of Pieces | Body Dia. Included | Number of Flutes | Number of Countersinking Ends | For Use On | Container Type | Set | |
Uncoated Carbon Steel | |||||||
| 7 | One 3/8" body dia. countersink for 1/8" dia. drill bit One 3/8" body dia. countersink for 9/64" dia. drill bit One 3/8" body dia. countersink for 5/32" dia. drill bit One 3/8" body dia. countersink for 11/64" dia. drill bit One 3/8" body dia. countersink for 3/16" dia. drill bit One 7/16" body dia. countersink for a 13/64" dia. drill bit One 1/2" body dia. countersink for a 7/32" dia. drill bit | 4 | 1 | Plastic, Wood | Wood Stand | 0000000 | 000000 |
| 14 | One 3/8" body dia. countersink for 1/8" dia. drill bit One 3/8" body dia. countersink for 9/64" dia. drill bit One 3/8" body dia. countersink for 5/32" dia. drill bit One 3/8" body dia. countersink for 11/64" dia. drill bit One 3/8" body dia. countersink for 3/16" dia. drill bit One 7/16" body dia. countersink for a 13/64" dia. drill bit One 1/2" body dia. countersink for 3/16" dia. drill bit One 1/2" body dia. countersink for 13/64" dia. drill bit One 1/2" body dia. countersink for a 7/32" dia. drill bit One 1/2" body dia. countersink for 1/4" dia. drill bit One 5/8" body dia. countersink for 3/16" dia. drill bit One 5/8" body dia. countersink for 1/4" dia. drill bit One 5/8" body dia. countersink for a 9/32" dia. drill bit One 5/8" body dia. countersink for 5/16" dia. drill bit | 4 | 1 | Plastic, Wood | Wood Stand | 0000000 | 000000 |