Hex Nuts (Coarse/Fine/Lock)
Hex nuts: coarse thread (GB/T 6170-2015), fine thread (GB/T 6171-2016) and lock nuts (GB/T 889.1-2015). Filter by standard, pitch, grade, material and finish.
See all sizes → Hex nut weight chart (M6–M36)
Reference StandardsGB/T 6170-2015GB/T 6171-2016GB/T 889.1-2015
Hex nuts: coarse thread (GB/T 6170-2015), fine thread (GB/T 6171-2016) and lock nuts (GB/T 889.1-2015). Filter by standard, pitch, grade, material and finish.
SKU Matrix
136 SKUs| SKU | Size (Dia × Len) | Material / Finish | Threading | Pitch | Unit Wt (g) | Action | |
|---|---|---|---|---|---|---|---|
| HN-000065 | M3 | Carbon Steel· 10· Dacromet8 material/finish options | — | 0.5 | 0.4 Estimated | Request a Quote | |
| HN-000071 | M4 | Carbon Steel· 10· Dacromet8 material/finish options | — | 0.7 | 0.7 Estimated | Request a Quote | |
| HN-000077 | M5 | Carbon Steel· 10· Dacromet8 material/finish options | — | 0.8 | 1 Estimated | Request a Quote | |
| HN-000092 | M6 | Carbon Steel· 10· Dacromet8 material/finish options | — | 1.0 | 2 Estimated | Request a Quote | |
| HN-000015 | M8 | Carbon Steel14 material/finish options | — | 1.25 | 5 Estimated | Request a Quote | |
| HN-000021 | M10 | Carbon Steel· Hot-Dip Galvanized17 material/finish options | — | 1.5 | 10 Estimated | Request a Quote | |
| HN-000001 | M12 | Carbon Steel17 material/finish options | — | 1.75 | 15 Estimated | Request a Quote | |
| HN-000014 | M14×50 | Alloy Steel· 12.9 | — | — | 24 Estimated | Request a Quote | |
| HN-000104 | M16 | Carbon Steel· 10· Dacromet14 material/finish options | — | 2.0 | 31 Estimated | Request a Quote | |
| HN-000026 | M18 | Carbon Steel | — | — | 43 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 6170-2015 / GB/T 6171-2016 / GB/T 889.1-2015
Common equivalents are listed below; confirm dimensions and drawing details before substitution.
Spec Range
M3–M48 · 17 sizes / 136 SKUs
Carbon Steel, Stainless 304, Stainless 316L, Stainless Steel, Alloy Steel, Stainless 316, A2 Stainless, Q235 Steel, 42CRMO, Nylon; Dacromet, Hot-Dip Galvanized, Zinc Plated, Black Oxide, Galvanized
Grades
A2-70, 8.8, A4-80, 12.9, 42CRMO, 10.9, A4-70, 8, 10, 12
Confirm grade together with mating nuts, washers and certificate requirements.
What to include
Quoted by full spec
Send diameter, property class, material, finish and the mating bolt standard with your inquiry. For use with hot-dip galvanized bolts, let us know so we can confirm tapping allowance and assembly fit.
Standard Equivalents
Cross-referenced equivalents, order to the primary standard
| Standard | Fit | Remark |
|---|---|---|
| GB GB/T 6170-2015 | Identical family | Chinese hex nut standard family |
| DIN DIN 934 | Commercial equivalent | Common commercial equivalent; confirm height/property class |
| ISO ISO 4032 | Commercial equivalent | Common commercial equivalent; confirm height/property class |
| GB/T GB/T 889.1-2015 | Identical family | Primary standard from source content |
Related Procurement Guides
Hex Nut Weight Chart
Grams per piece and kg per 1,000 pcs on the GB/T 6170-2015 basis, with width across flats and nut height, kg/1,000 ↔ lb/100 toggle.
How to Read an MTC (Material Test Certificate)
What MTC stands for, who issues it, how it differs from a COC, and the checks that expose a forged certificate.
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.