Screws Drills Taps
Do I have to drill a hole to use self tapping screws?
I am trying to fit a roller blind into the uPVC window frame (cannot fix to wall or roof due to electrical wiring). I have read that I should use self tapping screws to affix to plastic but am not sure what these are or how they work! Do I need to drill into the plastic first? If so, can anyone advise a sensible drill bit size and type? If not, how do the screws work?
You should drill a very small pilot hole, then when you put a power driver to the screw do it in bursts or use a hand held screwdriver.
Before drilling the plastic, put a small sticking plaster where you want the hole. Mark the sticking plaster with a Biro where you want the hole and then drill slowly at first until the drill bites, then as normal. This will stop the drill skidding and marking the plastic badly.
How to Drill & Tap
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*NEW* 30-322-2 SPI DRILL SCREW TAP GAGE .040 TO .228 $34.99 |
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117 pc Machine Screw SAE / Metric Tap & Die Drill Bit $139.95 |
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Taper Tap Drill Bit Screw Die Thread Tool Set 12 Pcs $28.04 |
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117 pc Machine Screw SAE / Metric Tap & Die Drill Bit ATD 277 $107.76 |
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Top New 12pcs Taper Tap Drill Bit Screw Die Thread Tool Set $22.87 |
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DIXON DRILL & TAP SCREW #12-14X3/4 – 539115643 $1.00 |
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Drill Tap for 6.5 mm Screws Synthes 311.66 $70.00 |
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Drill Tap for 4.5 mm Screws Synthes 311.45 $60.00 |
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SCREW THREADS & TAP DRILL SIZES SLIDING WHEEL GUIDE $5.99 |
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VINTAGE CLEVELAND TWIST DRILL MACHINE SCREW FRACTIONAL TAP THREAD SIZE CHART EXC $9.99 |
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Taper Tap Drill Bit Screw Die Thread Tool Set 12 Pcs $26.46 |
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250 STAR DRILL & TAP HEX HEAD SHEET METAL SCREWS TEK SELF THREADING 12-14 x1-1/2 $24.99 |
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250 STAR DRILL & TAP HEX HEAD SHET METAL SCREWS TEK SELF TAPPING 10-16 x 1-1/4″ $24.99 |
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CENTURY 12-24 NC MACHINE SCREW TAP PRECISION CUT THREAD $3.99 |
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CENTURY 10-24 NC MACHINE SCREW TAP PRECISION CUT THREAD $3.99 |
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ATD-277 117 pc. Machine Screw, Fractional & Metric Tap & Die Drill Bit Set $158.59 |
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Synthes 387.687 Plate Holding Drill Tap & Screw Guide Double Barrel (R $3762.00) $125.00 |
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Synthes 387.688 Plate Holding Drill Tap & Screw Guide Single Barrel (R $3762.00) $125.00 |
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VINTAGE GENERAL HARDWARE DRILL & WIRE GAUGE INDEX No. 15 FOR SCREW TAPS $12.00 |
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Taper Tap Drill Bit Screw Die Thread Tool Set 12 Pcs $23.60 |
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ATD #277 117 pc. Machine Screw, Fractional & Metric Tap & Die Drill Bit Set $189.99 |