1. Impact Driver V’s Screwgun Recommended drill speed into Steel Purlin
2400 – 2500 rpm max
Recommended drill speed into Timber
1500rpm max
Comparison
Screwgun max 2400 rpm
Impact Driver 3200rpm!!!!!!
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2. Screws into Steel Purlin with Impact Driver
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3. Screws into Timber with Impact Driver
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4. Using Impact Drivers with Self Drilling Screws
Impact drivers are not designed for self drilling screws, particularly into steel
Tips of self drilling screws are damaged resulting in burn-out or will not drill properly
Can damage or break threads into steel purlins, resulting in severely reduced holding power
Magnetic sockets will damage and remove paint from the head of the screw
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5. Do not have a clutch or depth locator to reduce overdriving problems.
Impact Drivers cont;
Impact Drivers can crack or split the protective galvanised coating, resulting in premature corrosion of the screw.
Can overdrive fasteners particularly on pan fixed products, creating dishing around the fastener.
Do not have a clutch or depth locator to reduce overdriving problems.
Can break the heads on pan fixed screws.
Extremely noisy when used particularly on steel.
Require Hearing Protection when used.
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6. Impact Drivers cont;
Hylton Parker Fasteners will NOT warranty any Roofing & Cladding fasteners installed with Impact Drivers.
All implied warranties or guarantees on H.P.F. fasteners are null and void if Impact Drivers are used for any installation.
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7. Impact Drivers cont;
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8. Impact Drivers cont;
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9. Impact Drivers cont;
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10. Impact Drivers cont;
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11. Impact Drivers cont;
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12. Impact Drivers cont;
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