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Home Product M4x30 Metric External Hex Bolt Stainless Steel A2 DIN 933 Fastener Machine Screw
Metric external hexagonal bolts M4*30

M4x30 Metric External Hex Bolt Stainless Steel A2 DIN 933 Fastener Machine Screw

M4x30 hex bolts
metric hexagonal head bolts
metric hex cap screws M4x30
Metric external hexagonal bolts M4*30
Metric external hexagonal bolts M4x30, also called M4x30 hex bolts or metric hex cap screws. DIN 933 standard metric hexagonal head bolts with full threading, available in steel or stainless steel with zinc plating. Suitable for machinery, automotive, and construction fastening applications.
Categories:Fasteners & Fixings
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Product Description

The metric external hexagonal bolts M4x30, also known as metric hex cap screws M4x30, feature a 4mm nominal diameter and 30mm shank length with full threading. Designed as standard metric hexagonal head bolts, these fasteners typically employ a 6mm hex key drive (across-flats width) and 3mm head height, compatible with ISO 4017/DIN 931 standards. Constructed from stainless steel (A2/A4) or carbon steel (grade 8.8/10.9/12.9), they offer tensile strengths ranging from 800 MPa to 1200 MPa depending on material grade. Suitable for industrial machinery, automotive assemblies, and structural applications requiring vibration resistance, these M4x30 hex bolts operate effectively in temperature ranges from -50°C to +300°C (material-dependent), with torque values between 1.3-2.5 Nm for standard installations. Their hex head design enables high-torque application with standard tools, while potential disadvantages include limited shear resistance in undersized applications and possible galling in stainless variants without lubrication.
Parameter Specification
Thread Size M4x30
Overall Length 30 mm
Material Carbon Steel (Grade 8.8) / Stainless Steel (A2-70)
Strength Grade 8.8 / A2-70
Head Dimensions (Hexagon) 7 mm (Width Across Flats), 3 mm Head Height
Surface Treatment Zinc Plated / Plain / Dacromet
Standards Compliance ISO 4014 / ISO 4017 / DIN 933 / DIN 931
Thread Pitch 0.7 mm (Standard Metric Coarse)
Torque Specifications 3.4 Nm (Grade 8.8) / 2.8 Nm (A2-70)
question:Why choose your company for purchasing industrial automation products?
answer:As Asia's leading industrial automation trader with 20 years' experience, we ensure reliable quality and trusted by 85% repeat clients.
question:Can I self-collect goods via official courier booking?
answer:Yes, self-collection via official courier can be arranged. Please contact our logistics team for details.
question:Can you provide shipment photos or purchase dates for similar products?
answer:We can share relevant shipment photos and details upon request while maintaining client confidentiality.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Why choose your company for purchasing industrial automation products?
answer:As Asia's leading industrial automation trader with 20 years' experience, we ensure reliable quality and trusted by 85% repeat clients.
question:Can I self-collect goods via official courier booking?
answer:Yes, self-collection via official courier can be arranged. Please contact our logistics team for details.
question:Can you provide shipment photos or purchase dates for similar products?
answer:We can share relevant shipment photos and details upon request while maintaining client confidentiality.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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