Bolt Strength Grades: 4.8 / 8.8 / 10.9 / 12.9
What the numbers mean, a tensile & yield comparison table, stainless A2-70 / A4-80, and how to pick the grade for your application.
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Resource Center
Fastener Resources & Selection Guides
Practical, standard-based explainers to help importers, engineers and buyers specify the right fastener — grade, thread system, surface treatment and anchor type — before requesting a quote.
Choosing the correct fastener is rarely about one product — it starts with the right standard, strength grade and environment. These guides translate the technical facts behind our catalog into plain decisions. Each article links back to the matching product families so you can move from "what does this mean" to "request a quote" in one step.
Published Guides
Start With the Right Spec
In-depth articles grounded in our product knowledge base (materials, grades and standards we actually manufacture).
DIN vs ANSI: Which Fastener Standard Do You Need?
Metric (DIN) vs inch (ANSI) thread systems, common part equivalents and how market determines the standard you should specify.
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Coming Soon
More Guides in Production
We are expanding the resource center with the following topics. Links activate as each guide is published.
Anchor & Fixing Selection Guide
Choosing drop-in, concrete, nylon and wall-plug anchors by substrate, load type and installation method.
Surface Treatment Selection Guide
Zinc plating, black oxide, hot-dip galvanizing and Dacromet — matched to indoor, outdoor and marine environments.
Corrosion Protection for Mining & Harsh Duty
High-strength and corrosion-resistant fastener strategies for mining equipment and structures.
Need a Specific Fastener Spec?
Send your standard, grade, material and quantity — we respond within 24 hours with a factory-direct quote.
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