Hex Head Bolts (incl. Hex Flange)
Hex head bolts: fully threaded (GB/T 5783-2025), partially threaded (GB/T 5782-2025), fine thread (GB/T 5785-2025/5786) and hex flange (GB/T 5789-1986). Filter by head form, threading, standard, grade, material and finish.
Hex head bolts: fully threaded (GB/T 5783-2025), partially threaded (GB/T 5782-2025), fine thread (GB/T 5785-2025/5786) and hex flange (GB/T 5789-1986). Filter by head form, threading, standard, grade, material and finish.
SKU Matrix
2000 SKUs| SKU | Size (Dia × Len) | Material / Finish | Threading | Pitch | Unit Wt (g) | Action | |
|---|---|---|---|---|---|---|---|
| HB-000450 | M3×5 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.5 | 0.6 Estimated | Request a Quote | |
| HB-000453 | M3×6 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.5 | 0.6 Estimated | Request a Quote | |
| HB-000456 | M3×8 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.5 | 0.7 Estimated | Request a Quote | |
| HB-000459 | M3×10 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.5 | 0.8 Estimated | Request a Quote | |
| HB-000462 | M3×12 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.5 | 0.9 Estimated | Request a Quote | |
| HB-000465 | M3×16 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.5 | 1 Estimated | Request a Quote | |
| HB-000468 | M3×20 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.5 | 1 Estimated | Request a Quote | |
| HB-000471 | M3×25 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.5 | 1 Estimated | Request a Quote | |
| HB-000474 | M3×30 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.5 | 2 Estimated | Request a Quote | |
| HB-000477 | M4×6 | Carbon Steel· 8.8· Zinc Plated5 material/finish options | Fully Threaded | 0.7 | 1 Estimated | Request a Quote |
Unit weight is a geometric estimate (base metal, coating excluded; HDG ≈ +4.5%); trade settlement by actual weight.
Key Parameters
Standard Basis
GB/T 5782-2025 / GB/T 5783-2025 / GB/T 5785-2025 / GB/T 5786-2016 / GB/T 5789-1986
Common equivalents are listed below; confirm dimensions and drawing details before substitution.
Spec Range
M3–M56 · 175 sizes / 2000 SKUs
Carbon Steel, Alloy Steel, Stainless 304, Aluminum Alloy, Q235 Steel, A4, 42CRMO, Stainless 316L, Q345, Stainless 316, Nylon, EPDM; Zinc Plated, Dacromet, Hot-Dip Galvanized, Polished, Black Oxide
Grades
8.8, 10.9, A2-70, 4.8, 12.9, A4-80, A4-70
Confirm grade together with mating nuts, washers and certificate requirements.
What to include
Quoted by full spec
Send diameter, length, property class, material and finish with your inquiry. A standard number alone (DIN/ISO/GB) also works, we confirm the equivalent dimensions before quoting.
Standard Equivalents
Cross-referenced equivalents, order to the primary standard
| Standard | Fit | Remark |
|---|---|---|
| GB GB/T 5783-2025 | Identical family | Chinese hex head bolt standard family |
| DIN DIN 933 | Commercial equivalent | Common commercial equivalent; confirm thread/detail on order |
| ISO ISO 4017 | Commercial equivalent | Common commercial equivalent; confirm thread/detail on order |
| ГОСТ ГОСТ Р ИСО 4017-2013 | Commercial equivalent | RF national standard adopting ISO 4017 (full thread hex bolt) |
| EN EN 15048 | Commercial equivalent | EN 15048 covers non-preloaded structural bolting ASSEMBLIES (bolt + nut + washer set), not single bolts. This site supplies the bolt component to GB/T 5783 (size basis ISO 4014 / ISO 4017); set requirements are confirmed per drawing. |
| GB GB/T 5782-2025 | Identical family | Chinese partially threaded hex bolt standard family |
| ISO ISO 4014 | Commercial equivalent | Common commercial equivalent; confirm thread length on order |
| DIN DIN 931 | Commercial equivalent | Common commercial equivalent; confirm thread length on order |
| ГОСТ ГОСТ Р ИСО 4014-2013 | Commercial equivalent | RF national standard adopting ISO 4014 (partially threaded hex bolt) |
| GB GB/T 5789-1986 | Identical family | Chinese hex flange bolt standard family |
| ISO ISO 4162 | Related standard | ISO 4162 is the small series (smaller dc and s, e.g. M12 dc 24.7 / s 15); different dimensional system, not interchangeable |
| DIN DIN 6921 | Related standard | dc identical size by size; s and k differ from M12 up (M12 s 18 vs 16, M14 21 vs 18, M16 24 vs 21); not interchangeable |
Related Procurement Guides
Bolt Torque Chart (Metric & Inch)
Metric M6–M36 by property class and inch 1/4″–2″ by SAE grade in one table, five friction states per size, Nm↔ft-lb toggle.
Fastener Receiving Inspection Checklist
39 acceptance items drawn from three public tender specifications: document pack, MTC field checks, galvanizing and salt spray, torque and rejection rules.
How to Choose a Fastener Supplier
Sourcing channels compared, ten supplier verification questions, and the downgrade tricks to catch at delivery, with a scorecard and RFQ template.