Hex Nuts DIN 934 (GB/T 6170 / ISO 4032)
Hex nuts: coarse thread (GB/T 6170), fine thread (GB/T 6171) and lock nuts (GB/T 889.1). Filter by standard, pitch, grade, material and finish.
This is the DIN 934 / GB/T 6170 hex nut (type 1, coarse thread) product page. DIN 934 is the German standard, GB/T 6170 is the Chinese standard, and ISO 4032 is the international standard — all three refer to the same ordinary hex nut. We supply to GB/T 6170 as the primary standard, and take DIN 934 and ISO 4032 as equivalent standards for quoting.
Sizes made to order cover M3–M30 (coarse thread). Carbon steel is available in property classes 8 / 10 / 12; stainless in A2-70 (304) and A4-70 (316 / 316L). Carbon steel finishes include zinc plating, hot-dip galvanizing, Dacromet and black oxide. Unit weights are geometry-based estimates.
Buyers switch between DIN 934 and GB/T 6170 all the time — a DIN 934 inquiry is supplied to GB/T 6170, with nut height and property class confirmed on order. For fine thread, see GB/T 6171 fine hex nuts; for locking, see GB/T 889.1 lock nuts.
Spec Notes
- Sizes made to order: M3, M4, M5, M6, M8, M10, M12, M16, M20, M24, M30 (coarse thread)
- Carbon steel property classes: 8 / 10 / 12; stainless: A2-70 (304), A4-70 (316 / 316L)
- Carbon steel finishes: zinc plating, hot-dip galvanizing (HDG), Dacromet, black oxide
- Unit weights are geometry-based estimates for reference only; unlisted sizes are quoted to your drawing
Standard Comparison
Cross-references are parameter-level only, order to the primary standard and drawing.
| GB/T 6170 (CN) | DIN 934 (DE) | ISO 4032 (ISO) | |
|---|---|---|---|
| Standard system | Chinese GB | German DIN | International ISO |
| Relation to this site | Primary | Equivalent | Equivalent |
| Ordering basis | Supplied to GB/T 6170 | Confirm height/property class | Confirm height/property class |
FAQ
Can you supply to DIN 934?+
Yes. DIN 934 is the equivalent standard for this GB/T 6170 hex nut in our standard-alias registry. We supply to GB/T 6170 and confirm nut height and property class against your requirement on order.
Are DIN 934 and GB/T 6170 interchangeable?+
They describe the same type 1 coarse-thread hex nut with essentially the same dimension system, as commercial equivalents. They are not verbatim identical documents — confirm height, dimensions and property class when substituting.
How do I read the nut property class?+
The property class is one digit equal to the first digit of the highest bolt grade it mates with: class 8 pairs with 8.8 bolts, 10 with 10.9, 12 with 12.9 (GB/T 3098.2). A higher nut class may substitute for a lower one.
What is the minimum order quantity (MOQ)?+
Confirmed per inquiry by spec and quantity; MOQ varies by size, material and finish. Send your full spec and we will quote.
How do I choose between coarse, fine and lock nuts?+
Coarse (GB/T 6170), fine (GB/T 6171) and lock nuts (GB/T 889.1) are three separate families. This page covers coarse thread; see the corresponding families for fine or lock nuts.
Certification & Inspection
This block only lists what the standard requires the buyer to verify on order; it is not a claim that our products hold any third-party certification.
Verify on order:
- Material certificate (carbon steel grade, stainless 304 / 316 / 316L)
- Property class (8 / 10 / 12 and the mating bolt grade)
- Coating and finish requirements (including salt-spray testing)
- Thread accuracy (6H) and dimensional tolerances
For CE / DoP / MTC 3.1 certificates, specify at order and we will assess against your project requirements separately.
Product tech package
Download the product tech package
The technical files on this page are bundled into one zip — enter your email to get it.
This package contains 4 items
- Product specification & dimension sheet (M3–M30)
- MTC / EN 10204 reading guide
- Salt spray & coating test methods
- Receiving inspection checklist (39 items)
Key Parameters
Standard Basis
GB/T 6170 / GB/T 6171 / GB/T 889.1
Common equivalents are listed below; confirm dimensions and drawing details before substitution.
Spec Range
M3–M48 · 11 sizes / 90 SKUs
Stainless 304, Stainless 316, Stainless 316L, Carbon Steel; Zinc Plated, Hot-Dip Galvanized, Dacromet, Black Oxide
Grades
A2-70, 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 | 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 | Identical family | Primary standard from source content |
Hex nuts: coarse thread (GB/T 6170), fine thread (GB/T 6171) and lock nuts (GB/T 889.1). Filter by standard, pitch, grade, material and finish.
Spec Range
M3–M48 · 11 sizes
SKU Matrix
90 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 | |
 | HN-000071 | M4 | Carbon Steel· 10· Dacromet8 material/finish options | — | 0.7 | 0.7 Estimated | |
 | HN-000077 | M5 | Carbon Steel· 10· Dacromet8 material/finish options | — | 0.8 | 1 Estimated | |
 | HN-000092 | M6 | Carbon Steel· 10· Dacromet8 material/finish options | — | 1.0 | 2 Estimated | |
 | HN-000095 | M8 | Carbon Steel· 10· Dacromet8 material/finish options | — | 1.25 | 5 Estimated | |
 | HN-000098 | M10 | Carbon Steel· 10· Dacromet10 material/finish options | — | 1.5 | 10 Estimated | |
 | HN-000101 | M12 | Carbon Steel· 10· Dacromet8 material/finish options | — | 1.75 | 15 Estimated | |
 | HN-000104 | M16 | Carbon Steel· 10· Dacromet8 material/finish options | — | 2.0 | 31 Estimated | |
 | HN-000107 | M20 | Carbon Steel· 10· Dacromet8 material/finish options | — | 2.5 | 61 Estimated | |
 | HN-000083 | M24 | Carbon Steel· 10· Dacromet8 material/finish options | — | 3.0 | 100 Estimated | |
 | HN-000089 | M30 | Carbon Steel· 10· Dacromet8 material/finish options | — | 3.5 | 240 Estimated |