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DrillFast® A4 stainless low profile light steel mainfix fastener, 19mm washer

A4/316 grade stainless steel low profile fastener for fixing to light metal purlins and rails.

Supplied pre-assembled with a stainless steel / EPDM rubber 19mm diameter sealing washer, normally used in roof applications.

Certified by

Certified by

DrillFast® A4 stainless low profile light steel mainfix fastener, 19mm washer

A4/316 grade stainless steel low profile fastener for fixing to light metal purlins and rails.

Supplied pre-assembled with a stainless steel / EPDM rubber 19mm diameter sealing washer, normally used in roof applications.

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	Years / Environment
	Interior	Semi-interior	Rural	Urban	Industrial / Coastal	Marine	Swimming pools & Chemical plants
Corrosivity Category	C1	-	C2	C3	C4	C5	-
Austenitic Stainless Steel A4 Grade (316)	40	40	40	40	25	25	0

	Years / Environment
	Interior	Semi-interior	Rural	Urban	Industrial / Coastal	Marine	Swimming pools & Chemical plants
Corrosivity Category	C1	-	C2	C3	C4	C5	-
Austenitic Stainless Steel A4 Grade (316)	40	40	40	40	25	25	0

	Years / Environment
	Interior	Semi-interior	Rural	Urban	Industrial / Coastal	Marine	Swimming pools & Chemical plants
Corrosivity Category	C1	-	C2	C3	C4	C5	-
Austenitic Stainless Steel A4 Grade (316)	40	40	40	40	25	25	0

	Years / Environment
	Interior	Semi-interior	Rural	Urban	Industrial / Coastal	Marine	Swimming pools & Chemical plants
Corrosivity Category	C1	-	C2	C3	C4	C5	-
Austenitic Stainless Steel A4 Grade (316)	40	40	40	40	25	25	0

	Years / Environment
	Interior	Semi-interior	Rural	Urban	Industrial / Coastal	Marine	Swimming pools & Chemical plants
Corrosivity Category	C1	-	C2	C3	C4	C5	-
Austenitic Stainless Steel A4 Grade (316)	40	40	40	40	25	25	0

Fastener SKU	Washer	Max
DF3-SSA4-P-S19-5.5 x 25	S19 washer	5 mm
DF3-SSA4-P-S19-5.5 x 35	S19 washer	8 mm
DF3-SSA4-P-S19-5.5 x 50	S19 washer	30 mm
DF3-SSA4-P-S19-5.5 x 75	S19 washer	55 mm

Installation tool	Variable speed electric screw gun
Installation drive	Fixfast RedDrive
Installation speed	1500 RPM
Correct installation	Fasteners should be driven within three degrees of perpendicular to the surface of the fastened material. Use a depth-setting nosepiece to avoid over-driving, and do not over-tighten. Variants with bonded washers should not have the rubber compressed to less than two-thirds of its uncompressed height. Care should be taken when engaging and disengaging from the fastener head to avoid damage to the protective coating.
Handling	Fasteners may have sharp edges, and the use of power tools can be dangerous. Use personal protective equipment. Store fasteners in dry conditions. Inspect each fastener before use and do not use damaged fasteners.