Technical Resources | Standards Cross-Reference & Torque Chart
2 technical resources, 5 class-based torque datasets, 40+ standard cross-references.
DIN / GB / ISO Fastener Cross-Reference Chart | Purchase Matching Guide
The most common confusion in export trade: drawings say DIN, factories produce to GB, inspectors cite ISO. This chart covers the DIN-GB-ISO equivalents for the most-used bolts and nuts (e.g. hex bolt fully threaded DIN 933 = GB/T 5783 = ISO 4017), plus notes on across-flats differences and superseded standards.
Bolt Torque Chart (M6–M24) | Recommended Tightening Torques for 8.8 / 10.9 / Stainless
The most common question on the shop floor: how hard should this bolt be tightened? This chart lists recommended tightening torques for M6-M24 coarse threads in 8.8, 10.9 and A2-70 stainless (dry assembly, mu about 0.14, based on 70% of yield), plus the four factors that shift real torque values and a quick field formula.
Bolt & Nut Selection Guide | Grade, Material, Thread, Finish and Locking in One Page
A complete inquiry states five things: grade, material, thread, finish and locking method. This guide explains how grade numbers read, how to choose between 304 / 316 / zinc-plated carbon steel, the trade-offs of coarse vs fine thread and locking options, and lists the five most common selection mistakes.
Bolt Torque Formula & Friction Coefficients Explained | T = F x (0.16P + 0.58d2mu + 0.775dmu)
The full method behind our online torque calculator: tightening torque by T = F x (0.16P + 0.58d2mu + 0.775dmu), preload F = 0.7 x yield x stress area, for M5-M42 coarse threads; including pitch / pitch-diameter / stress-area formulas, the three friction-condition steps and the grade-to-yield lookup table.
Downloads
Product catalogue, DIN / GB / ISO cross-reference, bolt torque chart and mill certificate samples — direct downloads.
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