Prevailing-torque (self-locking) nuts resist loosening under vibration: DIN 985 / ISO 10511 (thin) and ISO 7040 / DIN 982 (full height) use a polyamide insert and are limited to about 120 °C; DIN 980 / ISO 7042 all-metal nuts use a deformed thread and suit higher temperatures and repeated use. Flange nuts DIN 6923 / ISO 4161 (plain or serrated) replace nut plus washer on flange screws. Cap (acorn) nuts DIN 1587 protect and cover exposed thread ends; wing nuts DIN 315 allow tool-free adjustment; coupling nuts DIN 6334 (3 d long) join threaded rods. The finder lists each standard by thread size with one column per class and material.
Polyamide-insert nuts lose their prevailing torque after a few reuses and should not be used above 120 °C or with hot-dip galvanised bolts that have not been cleaned of zinc drips. Match property class and material to the bolt (class 8 for 8.8, A4 for A4). Cap nuts DIN 1587 need a bolt projection shorter than the dome depth (about 1 d) or the nut will bottom out before clamping.
Coverage: 1,756 catalogue rows with a readable rating, of 5,446 in these categories. Each cell lists up to 3 part numbers per column; click a part number for the product page and a quotation.
| Thread | Steel class 8 zinc-plated | Steel class 5–8 plain / other | Steel class 10 / 12 | Hot-dip galvanised | Stainless A2 | Stainless A4 | Brass / polyamide / other |
|---|---|---|---|---|---|---|---|
| M3 | — | — | — | — | 315A203 | 315A403 | — |
| M4 | 315041 | 31504040 315B04 | — | — | — | 315A404 | — |
| M5 | 315051 31505ZN5 | 315AM051 315B05 315P05 | — | — | 315A205 315AMA205 | 315A405 | — |
| M6 | 315061 315061SST096 | 31506 31506PH 315B06 | — | — | 315A206 315A206AM | 315A406 315AMA406 | — |
| M8 | 31508S2 315081 315081SST096 | 31508 315B08 | — | — | 315A208 | 315A408 | — |
| M10 | 31510S2 315101 315101SST096 | 31510 315B10 | — | — | 315A210 | 315A410 315A41080 | — |
| M12 | 315121 315121SST096 | 315B12 | — | — | 315A212 | 315A412 | — |
| M16 | 315161 315161SST096 | — | — | — | — | 315A416 | — |
| M20 | 315201 | 31520 | — | — | — | — | — |
| M24 | 315241 | 31524 | — | — | — | — | — |
| Thread | Steel class 8 zinc-plated | Steel class 5–8 plain / other | Steel class 10 / 12 | Hot-dip galvanised | Stainless A2 | Stainless A4 | Brass / polyamide / other |
|---|---|---|---|---|---|---|---|
| M8 | 6334082 | — | — | — | — | — | — |
| M16 | 6334162 | — | — | — | — | — | — |
Part numbers and designations are those of the original manufacturers and are given for identification. cBallast is an independent supplier; confirm ratings against the nameplate of the installed equipment before ordering. Table generated from the cBallast catalogue on 2026-09-29.