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2. Countersink - Wikipedia

   en.wikipedia.org/wiki/Countersink

   In manufacturing, a countersink (symbol: ⌵) is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common use is to allow the head of a countersunk bolt , screw or rivet , when placed in the hole, to sit flush with or below the surface of the surrounding material (by comparison, a counterbore makes a flat ...

3. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver.This form was the first type of screw drive to be developed, and, for centuries, it was the simplest and cheapest to make because it can just be sawed or filed.

4. Counterbore - Wikipedia

   en.wikipedia.org/wiki/Counterbore

   The uppermost counterbore tools shown in the image are the same device. The smaller top item is an insert, the middle shows another three-fluted counterbore insert, assembled in the holder. The shank of this holder is a Morse taper, although there are other machine tapers that are used in the industry.

5. What happens if you miss a credit card payment? - AOL

   www.aol.com/finance/happens-miss-credit-card...

   5 holidays tips for limiting your drink choices to save time and money. News. News. NY Post. Suspected CEO killer Luigi Mangione was flown back to city on NYPD’s $4M spy plane. News.

6. Florida grandpa, 72, killed over alleged loud music dispute ...

   www.aol.com/florida-grandpa-72-killed-over...

   A Florida grandfather preparing to celebrate Thanksgiving with his family and friends was shot to death by his neighbor inside a gated community as the two argued over loud music. Hureleyon McLean ...

7. Drill bit shank - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_shank

   It is a self-locking (or self holding) taper of approximately 5/8" per foot [3] that allows the torque to be transferred to the drill bit by the friction between the taper shank and the socket. The tang at the end of the taper provides a positive drive of the drill when the taper fails to grip. [ 4 ]

8. 6 Myths About High Blood Pressure Experts Want You to Stop ...

   www.aol.com/lifestyle/6-myths-high-blood...

   5. You’re Only at Risk If You Have a Family History “A common myth is that you will not develop high blood pressure if you do not have a family history of high blood pressure or heart disease ...

9. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   A 10.5 mm brad point drill bit. The brad point drill bit (also known as lip and spur drill bit, and dowel drill bit) is a variation of the twist drill bit which is optimized for drilling in wood. Conventional twist drill bits tend to wander when presented to a flat workpiece.