Fastener tools and charts.
Reference values buyers and engineers check before they write a specification, each one naming the standard it comes from.
Thread and bolt size chart
Metric and UNC/UNF pitches, stress areas, tap drills, clearance holes and spanner sizes.
Fastener weight calculator
Weight per piece and per 1,000 for bolts, nuts, washers and threaded rod, by material.
Bolt grade and property class chart
ISO 898-1 classes 4.6 to 12.9, stainless A2/A4, SAE and ASTM grades, proof loads by size.
Bolt torque and preload guide
Guide tightening torque from size, class and finish, with the method shown.
Metric bolt torque chart
Guide torque and preload tables, M6 to M36, classes 8.8, 10.9 and 12.9, for each thread finish.
Steel weight calculator
Mass per metre, per piece and per order for bar, plate, tube and pipe in steel, stainless or aluminium.
DIN to ISO cross-reference
Equivalent DIN, ISO and ASME standards, and the dimensions that changed.
EN 10204 certificate guide
What 2.1, 2.2, 3.1 and 3.2 documents contain and which one to ask for.
Standards library
The ISO, DIN, EN, ASME and ASTM standards that fastener, scaffolding and certificate specifications name.
Hardness converter
HRC, HRB, HV and HB conversion with approximate tensile strength, from the ASTM A370 tables for steel.
Galvanic corrosion chart
Fastener metal against base metal: relative corrosion risk and how to isolate the joint.
Fastener spec check
Paste order lines: each is normalised and checked for galvanizing, nut class, inch-metric and other errors, with weight and certificate.
AI Bill of Materials Takeoff
Upload a drawing or parts list (PDF, DXF, XLSX, CSV): get the BOM and bolt schedule as order lines, with the parts we supply marked for a quote. Free, 2 drawing sets a day.
Landed cost and CBAM calculator
Duty, Section 232, surtax, EU CBAM, indicative freight and import VAT for fasteners from India to the EU, UK, USA, Canada and the Gulf.
MTC Checker
Upload a mill test certificate (PDF or photo): chemistry, strength and hardness checked against ISO 898-1, ISO 3506 and ASTM limits, with missing EN 10204 content flagged. Free, 5 a day.
RFQ line builder
Write a correct fastener designation and send it as a quote request.
Printable wall charts.
A4 landscape PDFs generated from the same data as the tools, with sources and review date on every sheet.
Metric thread and bolt size chart (PDF)
Metric and UNC/UNF pitches, stress areas, tap drills, clearance holes and spanner sizes.
Bolt property class chart (PDF)
ISO 898-1 classes 4.6 to 12.9, stainless A2/A4, SAE and ASTM grades, proof loads by size.
Guide bolt torque chart (PDF)
Guide torque and preload tables, M6 to M36, classes 8.8, 10.9 and 12.9, for each thread finish.
Shipping tools from our group.
For freight planning and import duty, use the tools of iKargos, our group company for trade compliance, certification and logistics.
Send your drawing. We reply within one business day.
Specification, quantity and destination. PDF, DWG, DXF and STEP welcome.
Request a quote