Specifically designed to attach wood to heavy section steel (Max. 12mm). Metric thread with wings designed to ream out the timber, so the screw can achieve Max. R.P.M. without burning out. When the wings hit the metal they will break off to permit the thread to self-tap into the metal.
WingTip Screw S/DRILL No4 Zinc

WingTip Screw S/DRILL No4 Zinc - 5.5 x 85 (Box 100)

SKU: HW85B
£16.34 inc. VAT
£19.71 Sale £16.34 inc. VAT
Description

TIMCO Self-Drilling Wing-Tip Steel to Timber Heavy Section Silver Screws - 5.5 x 85

Specifically designed to attach wood to heavy section steel (Max. 12mm). Metric thread with wings designed to ream out the timber, so the screw can achieve Max. R.P.M. without burning out. When the wings hit the metal they will break off to permit the thread to self-tap into the metal.

Pack Quantity 100
Pack Type Box
Description Specifically designed to attach wood to heavy section steel (Max. 12mm). Metric thread with wings designed to ream out the timber, so the screw can achieve Max. R.P.M. without burning out. When the wings hit the metal they will break off to permit the thread to self-tap into the metal.
Product Code HW85B
To Suit Timber mm 30 - 49
SKU Barcode 5055017532285
Pack Quantity Unit Pieces
Finish Zinc
Recess Type Phillips
Material Case & Core Hardened Carbon Steel
Corrosion Rating 1 - Clean, dry & low humidity environments
Included Items PH3 S2 Bit (Qty 1)
Rec RPM 1,000 - 1,800
Substrates Steel, Timber
Length mm 85
Head Type Countersunk with Ribs
Thread Type Metric
Point Type Self-Drilling No.5
Size mm 5.5 x 85
Driver Bit Size PH3
Type For Timber to Heavy Section Steel
Effective Thread Length mm 51
Thread Dia. mm 5.5
Carton Qty pcs 1600
Carton Qty Packs 16
Max Drilling Thickness mm 12
Drill Tip Length mm 25
Head Height mm 5
Approval BS EN 10666 (DIN 7504)
Head Dia. mm 11
Steel and Fixture Thickness mm 55
Pack Dimensions L x W x H mm 135 x 90 x 90
Pack Weight kg 1.219
Thread Coverage Fully Threaded