Taps, high carbon steel, 6-40 thread
Taper taps have eight to ten threads chamfered to start and cut threads easily, in a through hole, which is open at the bottom.

Plug taps have three to five threads chamfered, to cut threads in a through hole, or to start threads in a blind hole, closed at the bottom.

Tap Drills are smaller in diameter than the screw shaft to leave enough metal to cut threads.

Clearance Drills are large enough to allow the body of the bolt to pass through the hole.

Tap Drill: for 6-40 thread, use No. Drill-33
Clearance Drill: for 6-40 thread, use No. Drill-25

Beware of HSS hardware store taps, and machine shop taps. Never use high speed steel (HSS) taps for gunsmithing. High speed steel makes a great drill bit, but is a poor choice for a gunsmith's tap. If broken, it is difficult to remove. Our high carbon steel taps are hard and sharp. If broken, our taps are easily removed with a drift punch.
drill bit, HSS, Number 25, .1495" diameter, clearance drill No. 6 bolt or screw
drill bit, HSS, Number 25, .1495" diameter, clearance drill No. 6 bolt or screw
Part Number: DRILL-25
Availability: In Stock
Price: $2.69
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drill bit, HSS, Number 33, .1130" diameter, tap drill 6-40 thread
drill bit, HSS, Number 33, .1130" diameter, tap drill 6-40 thread
Part Number: DRILL-33
Availability: In Stock
Price: $2.69
Order Quantity:
Tap, high carbon steel, 6-40 thread, bottom tap
Tap, high carbon steel, 6-40 thread, bottom tap
Part Number: TAP-6-40-B
Availability: In Stock
Price: $4.59
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Tap, high carbon steel, 6-40 thread, plug tap
Tap, high carbon steel, 6-40 thread, plug tap
Part Number: TAP-6-40-P
Availability: In Stock
Price: $4.59
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Tap, high carbon steel, 6-40 thread, taper tap
Tap, high carbon steel, 6-40 thread, taper tap
Part Number: TAP-6-40-T
Availability: In Stock
Price: $4.59
Order Quantity:
Tap handle, accepts #0 to #8 diameter taps
Tap handle, accepts #0 to #8 diameter taps
Part Number: TAP-W-0
Availability: In Stock
Price: $7.99
Order Quantity:
 
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