Evolution A4 Bi-Metal Masonry Screw

For fixing timber battens, trunking, track and general components to concrete and masonry substrate.

Head style: 5/16″ hexagonal head
Drill point: Type 17
Shank material: Bi-Metal
Material grade: AISI 316/A4
Coating: Electroplated zinc

Carbon steel point and lead thread ensures superior tapping characteristics giving consistent fastening every time.

Bi-metal fasteners have a hardened carbon steel drill point married to a 316 / Euro A4 grade stainless steel shank and head.

Aggressive threadform design ensures consistent tapping and holding power. Fast and simple installation.

Non-expansion fixing allows fixing closer to the edge of the substrate. Euro A4 grade stainless washers available.

Product Range

Supplier Code	Size / Nom. Length (mm)	Box	Carton	Min. Embed. Depth (mm)	Max. Embed. Depth (mm)	Fixture / Build Up Thickness
A4HH66.3-32-GP	6.3 x 32	100	2,400	25.00	32.0	0.0-5.0
A4HH6.3-45-GP	6.3 x 45	100	2,400	25.0	35.0	5.0-15.0
A4HH6.3-57-GP	6.3 x 57.0	100	2,400	25.0	45.0	15.0-27.0
A4HH6.3-70-GP	6.3 x 70.0	100	1,000	25.0	45.0	25.0-50.0
A4HH6.3-82-GP	6.3 x 82.0	100	1,000	25.0	45.0	40.0-50.0
A4HH6.3-100-GP	6.3 x 100.0	100	1,000	25.0	45.0	50.0-70.0
A4HH6.3-125-GP	6.3 x 125.0	100	1,000	25.0	45.0	75.0-100.0
A4HH6.3-140-GP	6.3 x 140.0	100	1,000	25.0	45.0	80.0-105.0
A4HH6.3-160-GP	6.3 x 160.0	100	1,000	25.0	45.0	95.0-125.0
A4HH6.3-180-GP	6.3 x 180.0	100	1,000	25.0	45.0	120.0-145.0
A4HH6.3-200-GP	6.3 x 200.0	100	1,000	25.0	45.0	140.0-165.0
A4HH6.3-250-GP	6.3 x 250.0	100	1,000	25.0	45.0	185.0-210.0

Technical Information

A4HH Bi-Metal Masonry Screw Datasheet