Hobson technical document
Nyloc Nut Proof Load Chart: DIN 985 Nylon Insert Nuts M3 to M39
Hobson's one-page proof load table for Nyloc DIN 985 nylon insert nuts with metric coarse threads. For each size from M3 to M39 it lists the pitch, nominal stress area and proof load in newtons for property classes 4 to 12.
What this covers
- Thread size and pitch
- Stress area
- Proof load by property class
For Nyloc Nut.
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- Covers metric coarse sizes M3 to M39, with property classes 5, 6, 8, 10 and 12 at every size and class 4 from M18 up.
- M10: proof load 29,000N (class 5), 35,000N (class 6), 46,000N (class 8), 58,000N (class 10), 69,500N (class 12).
- M16: 78,500N, 94,000N, 126,000N, 157,000N and 188,000N for the same classes.
- M24: 141,000N (class 4), 176,000N (class 5), 212,000N (class 6), 282,000N (class 8), 353,000N (class 10), 423,000N (class 12).
- The table gives proof loads only; it lists no working loads or tightening torques.
Who it helps: Engineers and staff checking which Nyloc nut class suits a bolt.
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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.