DIN 931-1 Hexagon head bolts with shank (ISO 4014 modified)

Is DIN 931-1 still current?

No, it has been replaced. DIN 931-1 has been replaced by ISO 4014 (MechAtlas review: 27 October 2026). Use the replacement for new work, and check differences before interchanging parts.

What it covers

Former German part-threaded hex bolt standard.

Before you interchange parts

• DIN 931 → ISO 4014 (2022): AF changes at M10/M12/M14/M22
• DIN 931 → ISO 4014 / EN ISO 4014 (stated by catalogue): Catalogue prints 'in compliance with ISO 4014'. Its own spec tables mix DIN and ISO across-flats for M10-M22, so check head size when interchanging.

Parts that use DIN 931-1

• Hex head bolt (partly threaded) (Germany (DIN), old)
  Bolt with a hexagon head and a plain shank part, used with a nut to clamp flanges, brackets and machine parts.
  DIN 931 - M12 x 80 - 8.8
  Withdrawn; was a modified ISO 4014. Replaced by DIN EN ISO 4014.

Official source

MechAtlas does not reproduce standards. Check the official edition at the publisher's page for DIN 931-1 or the DIN store.

Other fasteners & threads standards

• DIN 125-1 Replaced
  Washers, product grade A, up to 250 HV
• DIN 1481 Replaced
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• DIN 2999-1 Replaced
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• DIN 6325 Replaced
  Hardened parallel pins m6 (old)
• DIN 6914 Replaced
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• DIN 7 Replaced
  Parallel pins (old)
• DIN 7337 Replaced
  Break mandrel blind rivets (old)
• DIN 7991 Replaced
  Hexagon socket countersunk head screws
• DIN 9021 Replaced
  Washers, outside diameter about 3 x thread
• DIN 912 Replaced
  Hexagon socket head cap screws (ISO 4762 modified)
• DIN 913 Replaced
  Hexagon socket set screws, flat point (ISO 4026 modified)
• DIN 916 Replaced
  Hexagon socket set screws, cup point (ISO 4029 modified)

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