Description and Translation of DIN 934 Fasteners
DIN 934 fasteners, a fundamental German industrial standard, function as essential hexagonal nuts widely used in mechanical engineering, automotive manufacturing, and structural assemblies. Their primary role is to form secure threaded connections with bolts or studs, transmitting axial clamping forces to maintain joint integrity under static and dynamic loads. These nuts ensure reliable component fastening while enabling controlled disassembly for maintenance and repair operations.
In terms of materials, DIN 934 fasteners are predominantly manufactured from carbon steel (e.g., property class 8 per DIN EN ISO 898-2) and alloy steel, providing excellent load-bearing capacity and mechanical stability. For corrosion-resistant applications, stainless steel variants (e.g., A2-70, A4-80 conforming to DIN EN ISO 3506) are specified to ensure durability in humid, chemical, or outdoor environments.
Surface treatments include zinc plating with chromate passivation for enhanced rust resistance, hot-dip galvanizing for robust corrosion protection in harsh conditions, and phosphate coating to improve thread lubrication during assembly. These treatments effectively extend service life and optimize performance across diverse operating environments.
Key characteristics of DIN 934 fasteners include standardized metric coarse threads, full hexagonal profiles with chamfered edges, and precise dimensional tolerances ensuring interchangeability across global markets. Their mechanical attributes feature specified proof loads (minimum 600 MPa for class 8), appropriate hardness values, and uniform thread geometry. Additionally, they exhibit consistent torque-clamping force relationships and reliable locking performance when paired with compatible bolts, making them indispensable in industrial fastening applications worldwide.
| Thread Size d | M1 | M1.2 | M1.4 | M1.6 | (M1.7) | M2 | (M2.3) | M2.5 | (M2.6) | M3 | (M3.5) | M4 | M5 | M6 | (M7) | M8 | ||||
| P | Pitch | Coarse thread | 0.25 | 0.25 | 0.3 | 0.35 | 0.35 | 0.4 | 0.45 | 0.45 | 0.45 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1 | 1.25 | ||
| Fine thread-1 | / | / | / | / | / | / | / | / | / | / | / | / | / | / | / | 1 | ||||
| Fine thread-2 | / | / | / | / | / | / | / | / | / | / | / | / | / | / | / | / | ||||
| m | max=nominal size | 0.8 | 1 | 1.2 | 1.3 | 1.4 | 1.6 | 1.8 | 2 | 2 | 2.4 | 2.8 | 3.2 | 4 | 5 | 5.5 | 6.5 | |||
| min | 0.55 | 0.75 | 0.95 | 1.05 | 1.15 | 1.35 | 1.55 | 1.75 | 1.75 | 2.15 | 2.55 | 2.9 | 3.7 | 4.7 | 5.2 | 6.14 | ||||
| mw | min | 0.44 | 0.6 | 0.76 | 0.84 | 0.92 | 1.08 | 1.24 | 1.4 | 1.4 | 1.72 | 2.04 | 2.32 | 2.96 | 3.76 | 4.16 | 4.91 | |||
| s | max=nominal size | 2.5 | 3 | 3 | 3.2 | 3.5 | 4 | 4.5 | 5 | 5 | 5.5 | 6 | 7 | 8 | 10 | 11 | 13 | |||
| min | 2.4 | 2.9 | 2.9 | 3.02 | 3.38 | 3.82 | 4.32 | 4.82 | 4.82 | 5.32 | 5.82 | 6.78 | 7.78 | 9.78 | 10.73 | 12.73 | ||||
| e ① | min | 2.71 | 3.28 | 3.28 | 3.41 | 3.82 | 4.32 | 4.88 | 5.45 | 5.45 | 6.01 | 6.58 | 7.66 | 8.79 | 11.05 | 12.12 | 14.38 | |||
| * | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | ||||
| per 1000 units ≈ kg | 0.03 | 0.054 | 0.063 | 0.076 | 0.1 | 0.142 | 0.2 | 0.28 | 0.72 | 0.384 | 0.514 | 0.81 | 1.23 | 2.5 | 3.12 | 5.2 | ||||
Hexagon nuts sourced to match the mating bolt, thread system, mechanical grade and surface-treatment requirement.
General industrial bolted joints where the selected nut is compatible with the mating fastener and design load.
Suitability must be approved against the customer drawing, joint design and service conditions. Product-specific numbers are not published until confirmed by Shuojia and the selected manufacturing partner.
Drawing- and sample-based requests are reviewed with qualified manufacturing partners. State any required material certificate, dimensional report, thread-gauge result, hardness record, coating-thickness report or third-party inspection before quotation.
State the complete standard designation and revision for the Hexagon Nut, or attach a controlled drawing. Similar product names do not guarantee dimensional interchangeability.
Specify the required material, property class or grade for the Hexagon Nut. The proposed supply is confirmed against those requirements before quotation.
Confirm thread system, diameter, pitch, nut grade, style, finish and proof-load requirement. Add any tolerances or mating-part details that control fit or function.
State the service environment, coating system, colour, thickness and corrosion-test requirement. Shuojia will confirm the available Hexagon Nut sourcing route against the RFQ.
Request the exact records needed, such as material certificates, dimensional results, thread-gauge checks, hardness results or coating-thickness reports. Availability is confirmed in the quotation.
They depend on the final Hexagon Nut specification, quantity, tooling, finish, inspection and packing. The written quotation confirms all three before an order is placed.
Send the standard or drawing, material and grade, dimensions, finish, quantity, packing, documentation, destination and required delivery date for the Hexagon Nut.
