MTH

Underlayment to Wood or Steel Screw

The MTH underlayment screw is designed for fast and secure underlayment to subfloor installations. Unlike nails, the MTH underlayment screw has an intricate high-low thread pattern designed to prevent squeaking by holding plywood tight to the subfloor and thus preventing withdrawal. Its countersunk compact trim-head allows for a flush surface finish and prevents floor coverings from settling in countersink recesses. CE marked to EN14592.

MTH is a ribbed head screw with sharp point suitable for plywood, chipboard and OSB to wood installations, such as flooring.

Technical Data Sheet

CE Marking

Service class 1

Phosphated

Yellow electro-galvanised steel

Indoor

EPD

Product Details

Images

Features

Material

Steel - grey phosphate coating
Steel - yellow zinc coating

Benefits

25mm and 32mm lengths CE marked to EN14592
Deep recessed square drive holds bits tight, reducing cam-outs
High-low thread for easy driving and holding underlayment tight
Specially-designed sharp point for fast starts
Trim-head with nibs for easy countersinking
Plywood or OSB to wood applications
Recommended for installing Fermacell board to steel up to 0.9mm thickness
Bit (BIT2SE) included in every box for 25mm and 32mm screws
Bit (BITL2SE) included in every box for 19mm screws

New

New MTHZ19E 19mm collated flooring screw.

Using fasteners longer than necessary can lead to screws protruding through the underside of floorboards. This has the potential to cause all sorts of problems including damaging water pipes, cables and underfloor heating. The 19mm flooring screw is a safer way to fix 6mm plywood whilst providing superior holding power that only a screw can provide, and eliminating floor squeaks, floor lift and withdrawal that can occur when using nails. With 50 screws per strip there is less time reloading and significantly reducing installation times. The collation design means that there are no missed screws and no waste.

This screw has a different collation to the other MTH screws and so requires a different Quik Drive attachment - QDBPC19EF

Application

Support

Can be used to fix to timber
Can be used to fix to steel up to 0.9mm thick

Common Applications

Underlayment flooring
Timber to timber
Fixing to steel up to 0.9mm thick
fiber board to timber

Technical Data

Dimensions

Dimensions and caracteristics values

References	Head width [mm]	Diameter [mm]	Screw length [mm]	Qty screws per strip	Qty screws per box	Max rotation speed [tr/min]	Max rotation speed - DE [U/Min.]	Compatible tools
MTH25E	6.9	3.8	25	30	2500	2500	2500	QDPRO51E / QD76KE
MTH32E		3.8	32	30	2500	1000 - 2500	1000 - 2500	QDPRO51E / QD76KE
MTH32SE		3.8	32	30	2500	2500	2500	QDPRO51E / QD76KE

* Gray phosphate finish.
** Yellow zinc dichromate.

Mechanical Properties (EN14592)

References	Characteristic moment of elasticity - M_y,k [My,k] [kNmm]	Characteristic pullout parameter [fax,k] [N/mm²]	Characteristic head traversal parameter [fhead,k] [N/mm²]	Characteristic pulling capacity [ftens,k] [kN]	Characteristic resistance to torsion - R_tor,k [ftor,k] [Nm]
MTH25E	-	-	-	-	-
MTH32E	2	11.5	13.7	4.7	2.7
MTH32SE	-	-	-	-	-

Product Dimensions UK

References	Fastener dimensions [mm]			Qty per Strip	Qty per Box	Recommended RPM	Quik Drive Attachment	Weight [kg]
References	d_h	d	l	Qty per Strip	Qty per Box	Recommended RPM	Quik Drive Attachment	Weight [kg]
MTH25E	6.9	3.8	25	30	2500	2500	QDPRO51E / QD76KE	0.002
MTH32E		3.8	32	30	2500	2500	QDPRO51E / QD76KE	0.002
MTH32SE		3.8	32	30	2500	2500	QDPRO51E / QD76KE	4.9

MTH = grey phosphate coating
MTHZ = yellow zinc plated coating

Characteristic capacities on metal - DE

References	Connection to metal
	Application	Pull out		head pull trough		shear
	Application	F_ax,Rk [kN]	min. t [mm]	F_head,Rk [kN]	min. t of construction member (under head) [mm]	F_lat,Rk [kN]	min. t of construction members [mm]
MTH25E	Fermacell an Stahl	0.85	-	0.95	12.5	1.8	12,5 mm Fermacell an ≥ 0,7 mm Stahl
MTH32E	Fermacell an Stahl	0.85	-	0.95	12.5	1.8	12,5 mm Fermacell an ≥ 0,7 mm Stahl

Characteristic capacities on timber - DE

References	Connection to timber
	Application	pull out		head pull trough		shear
	Application	F_ax,Rk [kN]	min. t [mm]	F_head,Rk [kN]	min. t of construction member (under head) [mm]	F_lat,Rk [kN]	min. t of construction members [mm]
MTH25E	Fermacell an Holz	0.6	13	0.95	12.5	0.7	12,5 mm Fermacell an ≥ 12,5 mm Holz
MTH32E	Fermacell an Holz	1.15	20	0.95	12.5	0.95	12,5 mm Fermacell an ≥ 20 mm Holz

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Product Details

Images

Features

Material

Benefits

New

Application

Support

Common Applications

Technical Data

Dimensions

Dimensions and caracteristics values

Mechanical Properties (EN14592)

Product Dimensions UK

Characteristic capacities on metal - DE

Characteristic capacities on timber - DE

Certification

Declaration of Performance (DoP)

Environmental Product Declarations (EPD)

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