Many buyers ask for “ISO 4017 hex bolts,” but in the standard language, ISO 4017 refers to hexagon head screws with full thread. In daily trade, people still call them full-thread hex bolts. That is acceptable in conversation, but your purchase order should be precise.

For global sourcing, this small wording issue matters. A supplier may quote DIN 933, ISO 4017, or “full thread hex bolt” as if they are always interchangeable. They are close, but serious buyers should still confirm the exact standard, grade, coating, and inspection requirements.

What ISO 4017 Covers

ISO 4017 defines metric hex head fasteners with full thread. These bolts are common in machinery, brackets, equipment frames, maintenance work, and general industrial assembly.

For product references, buyers can review the 螺栓类别 and compare available materials and finishes.

关键规格点

ISO 4017 vs ISO 4014

Full Thread or Partial Thread

This is where many purchasing errors happen.

If the joint carries shear across the shank, ISO 4014 may be a better fit. If the assembly needs thread adjustment through the full length, ISO 4017 is usually more practical.

For a wider standards overview, see this guide to DIN和ISO紧固件标准.

Strength, Coating, and Inspection

Do Not Specify the Standard Alone

ISO 4017 only tells part of the story. It does not replace the need to define strength, material, and surface treatment.

A complete order line should look like:

1. ISO 4017 hex head screw
2. M12 x 50 mm
3. 8.8级碳钢
4. 镀锌
5. 全螺纹
6. Matching ISO nut and washer if required
7. MTC or inspection report if needed

对于负载关键型应用，请查看 高强度紧固件 before choosing 8.8, 10.9, or 12.9. For outdoor or corrosive use, compare 涂层紧固件选项.

实用的购买建议

ISO 4017 is a reliable global standard, but it must be used with clear purchasing language. Do not write only “M12 ISO bolt.” Confirm full thread, grade, material, finish, nut compatibility, and packaging.

Good specifications prevent the most common problems: wrong thread length, mismatched nuts, coating disputes, and failed incoming inspection.