Screws · Roofing & Cladding Screws

Roofing Screws with Bonded EPDM Washer Trade series (cladding fastener) (EH-SCR-RF)

5 catalogued sizes, dimensioned to Trade series (cladding fastener). Pick any row and the technical drawing redraws to it.

Roofing Screws with Bonded EPDM Washer to Trade series (cladding fastener) are catalogued in dia 5.5-6.3 mm, with spanner 8-10 mm, dia 16-22 mm. 5 sizes are held in the table below, and the technical drawing redraws to whichever row you select.

Standard: Trade series (cladding fastener)
Dia: 5.5-6.3 mm
Spanner: 8-10 mm
Dia: 16-22 mm
Catalogued sizes: 5

Dimensions are nominal values from the governing standard. Confirm the tolerance class for your application before ordering.

Applications & Industries

What Roofing Screws with Bonded EPDM Washer are specified for, industry by industry. Stocked from 5.5 to 6.3 (screw size).

Industries that specify Roofing Screws with Bonded EPDM Washer

Metal roofing & cladding Profiled sheet fixed to steel or timber purlins.
Agricultural buildings Large-span sheeting where every fixing is a leak path.
Industrial refurbishment Over-sheeting and repair fixings.
Construction & fit-out Fixing board, batten, framing and trim into timber and light-gauge steel.
Sheet-metal & HVAC Ducting, enclosures, trunking and cladding assembled without tapped holes.
Joinery & furniture Hardware, hinges and fittings into solid timber and wood-based board.

Roofing Screws with Bonded EPDM Washer in use — application photograph

Typical applications

fixing through the crown or the trough of a profiled sheet
bonded EPDM washer seals the hole as the screw is set
bi-metal heads where a carbon steel screw would stain the sheet
forming a thread directly in sheet, board or timber
fixing where there is no access to add a nut behind the panel
high-volume driving with a bit and a clutch-set driver

Service conditions to specify against

Marine and coastal: Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
Sealed joints: Used where the fixing has to keep water or air out as well as hold — the elastomer, not the fastener, decides service life.
Pilot hole: Selection is really a hole-size decision: too small and the screw snaps or splits the material, too large and it strips. The size is stated per row.

Where to use something else

Do not over-drive: the failure on a metal roof is almost always an extruded or UV-degraded washer, not the screw.
Not for a joint that will be dismantled and reassembled repeatedly in the same hole — use an insert or a rivet nut instead.

Full application guide: where Roofing Screws with Bonded EPDM Washer are used, how to specify them, and the cases they are wrong for

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.

Request a Quotation for Roofing Screws with Bonded EPDM Washer Trade series (cladding fastener) (EH-SCR-RF)

The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.

Request a Quotation

Specification

Item / category Standard Size(s) Material / finish Quantity

Business Information

Company * Contact Name * Email * Phone (with country code) Country / Region

Notes

Dimensions & Specifications (Trade series (cladding fastener))

Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row.

Nominal diameter (mm)	Across flats s (mm)	Washer diameter (mm)	Washer type	Drill capacity (mm)	Common length range (mm)	Material	Finish
5.5	8	16	Bonded EPDM + steel cap	1.5~5.0	19~100	Carbon steel	Ruspert / painted head
5.5	8	19	Bonded EPDM + steel cap	1.5~5.0	19~150	Carbon steel	Ruspert / painted head
6.3	8	19	Bonded EPDM + steel cap	2.0~6.0	25~150	Carbon steel	Ruspert / painted head
6.3	8	19	Bonded EPDM + A2 cap	2.0~6.0	25~150	A2 stainless head	Bi-metal, painted
6.3	10	22	Bonded EPDM + A2 cap	2.0~12.0	38~200	A2 stainless head	Bi-metal, painted

Roofing Screws with Bonded EPDM Washer conform to Trade series (cladding fastener). As screws, they are specified by the dimensions in the table below; this page also covers materials, finishes and typical uses.

What Are Roofing Screws with Bonded EPDM Washer?

Roofing Screws with Bonded EPDM Washer are screws defined by Trade series (cladding fastener). They are selected by screw size and the dimensional characteristics shown below, and are available in a range of materials and finishes to suit the application and environment.

Materials & Finishes

Common materials include carbon steel (typically zinc plated or hot-dip galvanized), hardened or case-hardened steel where wear matters, and stainless steel A2 (304) or A4 (316) for corrosion resistance. Specify the material, hardness where relevant, and the surface finish appropriate to your application and environment.

Pricing

Roofing Screws with Bonded EPDM Washer are supplied to order. Pricing starts from approximately US$0.070 per piece for standard sizes in case-hardened steel, zinc plated; final pricing depends on size, material, finish and order quantity (MOQ applies). Submit your exact configuration with the quote form above.

Inside the plant

Manufactured in our own plant

This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.

01

Cold heading

Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail.

Head dimensions and under-head radius checked at set-up and per shift.
02

Thread rolling

Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch.

Go / no-go ring gauges to ISO 965 tolerance class 6g.
03

Heat treatment

Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it.

Core hardness and tensile tested per lot to ISO 898-1.
04

Surface treatment

Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list.

Coating thickness and neutral salt spray hours to ISO 9227.

Frequently Asked Questions

Which standard governs Roofing Screws with Bonded EPDM Washer?

Roofing Screws with Bonded EPDM Washer are manufactured to Trade series (cladding fastener). The dimensional values on this page follow that standard.

What sizes are available for Roofing Screws with Bonded EPDM Washer?

The table on this page lists 5 sizes for Roofing Screws with Bonded EPDM Washer, ranging from 5.5 to 6.3. Sizes outside the table can be quoted on request.

In which materials are Roofing Screws with Bonded EPDM Washer supplied?

Roofing Screws with Bonded EPDM Washer are supplied in alloy steel (typically 10.9 / 12.9 for socket screws), carbon steel and stainless A2 / A4, with finishes including zinc plating, hot-dip galvanizing and black oxide. Choose material and finish to suit the load and the service environment for Roofing Screws with Bonded EPDM Washer.

How do I request a quotation?

Use the parametric drawing on this page to set the exact configuration (size, material, finish) and click "Request this configuration" — a specialist from Engineering Hardware will respond within one business day.