Notes for specifiers and buyers. — Technical resources on expansion anchors and structural bolts
Short technical notes written for the people who have to make the fixing work: what to check before ordering, how the products differ, and which assumptions usually cause problems on site.
- Articles
- 4 published notes
- Topics
- Selection Guide · Product Comparison · Materials & Finishing
- Scope
- General guidance, not project approval
How to Choose Expansion Anchors for Concrete
A practical selection sequence for wedge, sleeve, drop-in and bolt-type anchors — starting with the base material and load case rather than the catalogue page.
All articles
3 moreWedge Anchor vs Sleeve Anchor: What Differs
Both are expansion anchors, but they expand differently and suit different base materials. Here is how to decide between them.
Hot-Dip Galvanizing vs Zinc Plating for Fasteners
The two finishes look similar in a photo and behave very differently on site. A short guide to choosing the coating and writing it clearly in an RFQ.
Steel Structure Bolt Grades 8.8 and 10.9 Explained
The two numbers on a bolt head describe tensile strength and yield ratio — not the size, and not the tightening method. Here is how to read them.
Articles are general technical guidance. They are not an approval, a load table or a substitute for the project engineer. Values that depend on testing are deliberately not published here.
Question not covered?
Send the product, the base material and the load case. A technical answer can be given together with the quotation.