Hexagon head bolts with partial thread, coarse metric thread.
FASTENERS · HEX BOLTS
Hex Bolts by DIN & ISO Standard
Coarse and fine thread hex bolts for industrial and construction procurement. The standard number must be confirmed because thread length, pitch and across-flats dimensions can differ between legacy DIN and current ISO versions.
STANDARD MAPDIN 931 / ISO 4014 DIN 933 / ISO 4017 DIN 960 / ISO 8765 DIN 961 / ISO 8676
Common Hex Bolt Standards
Hexagon head screws with thread up to the head, coarse metric thread.
Partially threaded hexagon head bolts with metric fine pitch thread.
Fully threaded hexagon head screws with metric fine pitch thread.
DIMENSION REFERENCE
DIN 931 / 933 Legacy Reference
| Thread | M6 | M8 | M10 | M12 | M16 | M20 | M24 |
|---|---|---|---|---|---|---|---|
| Coarse pitch P (mm) | 1.0 | 1.25 | 1.5 | 1.75 | 2.0 | 2.5 | 3.0 |
| Head height k (mm) | 4.0 | 5.3 | 6.4 | 7.5 | 10.0 | 12.5 | 15.0 |
| Width across flats s · DIN (mm) | 10 | 13 | 17 | 19 | 24 | 30 | 36 |
Important: ISO 4014 / 4017 use different across-flats values for some diameters. RFQs should state DIN or ISO explicitly rather than using the numbers interchangeably.
FINE THREAD
Common DIN 960 / 961 Fine-Pitch Callouts
M8×1M10×1 / 1.25M12×1.25 / 1.5M16×1.5M20×1.5 / 2M24×1.5 / 2
RFQ CHECKLIST