Impact Driver V’s Screwgun Recommended drill speed into Steel Purlin 2400 – 2500 rpm max Recommended drill speed into Ti

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!!!!!!

2. Screws into Steel Purlin with Impact Driver

3. Screws into Timber with Impact Driver

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

5. 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.

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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