Hobson data sheet
316 Stainless Countersunk Coach Screw: Sizes and Pilot Holes
Hobson's one-page product data sheet for its 316 stainless countersunk coach screw (part SC16PLM), a gimlet point screw with a countersunk head for a flush finish. It lists four sizes with pilot hole sizes, thread length, head dimensions, drive size and pack quantity.
What this covers
- Applications
- Sizes and part numbers
- Pilot hole sizes
- Thread and head dimensions
Applies to Coach Screws (Lag Screws) and Countersunk Coach Screw.
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- Four sizes: M8 x 100, M8 x 140, M10 x 100 and M10 x 140, part numbers SC16PLM080100, SC16PLM080140, SC16PLM100100 and SC16PLM100140.
- Not self-drilling: drill a pilot hole first. M8: 4mm in softwood, 6.0mm in hardwood. M10: 5mm in softwood, 7.5mm in hardwood.
- Thread length is 60mm on the 100mm screws and 84mm on the 140mm screws.
- Head: M8 16mm diameter, 4.4mm high, 5mm hex drive; M10 20mm diameter, 5.5mm high, 6mm hex drive.
- Thread pitch 3.6mm (M8) and 4.5mm (M10). Packs of 100 (M8) and 50 (M10).
- For timber: fencing, brackets, hinges, decking, landscaping and retaining walls. Can go into concrete or brick with wall plugs.
- Material and finish: 316 stainless.
Who it helps: Builders and landscapers who want a flush-finish stainless coach screw for decks, fences and retaining walls.
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This document is published by Hobson Engineering, who supply this range to us. We show it here in full so you can read it next to the product; the summary above is ours. Read it on this page or download the PDF. For the most current version, ask us.
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