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Home Product M3*25 Metric Hex Bolts SteelFast Grade 8.8 Corrosion-Resistant Heavy-Duty Machine Screws for Automotive
Metric external hexagonal bolts M3*25

M3*25 Metric Hex Bolts SteelFast Grade 8.8 Corrosion-Resistant Heavy-Duty Machine Screws for Automotive

metric external hex bolts M3x25
M3x25 hexagonal head bolts
DIN 933 M3x25 screws
Metric external hexagonal bolts M3*25
Metric external hex bolts M3x25, M3x25 hexagonal head bolts with full thread, compliant with DIN 933 M3x25 screws standard. Durable zinc-plated or stainless steel options for machinery, electronics & automotive applications. High-strength fasteners with precise tolerances.
Categories:Fasteners & Fixings
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Product Description

The metric external hex bolts M3x25, also known as M3x25 hexagonal head bolts or DIN 933 M3x25 screws, feature a 3mm nominal diameter and 25mm shaft length with a full-threaded design. These ISO-standard fasteners comply with DIN 933 specifications, utilizing a 5.5mm hexagonal head width for tool engagement. Typically manufactured in steel (grade 4.8/8.8) or stainless steel (A2/A4), they operate in temperature ranges from -50°C to +300°C depending on material. Widely used in machinery, automotive, and electronics industries, these bolts offer high tensile strength (up to 800 MPa for grade 8.8) and corrosion resistance. Their standardized design ensures compatibility with M3 nuts and metric threading, though proper torque application requires calibrated tools to prevent thread stripping. Surface treatments may include zinc plating or black oxide for enhanced durability.
Parameter Specification
Product Designation Metric external hex bolts M3x25
Thread Size M3×25
Thread Pitch 0.5 mm (ISO standard)
Standard DIN 933 M3x25 screws
Head Style Hexagonal head bolts
Material Grade 4.8/8.8/A2-70
Surface Treatment Zinc plated/Black oxide/Geomet®
Hexagon Width 5.5 mm (AF)
Head Height 2.0 mm
Head Diameter 5.7 mm
Thread Length Full thread (DIN 933)
Mechanical Properties 400 MPa (4.8 grade)/800 MPa (8.8 grade)
question:Why is shipping cost high? Are there cheaper options?
answer:Shipping cost varies by carrier and destination. We offer DHL, FedEx, UPS. Contact us for discounted rates.
question:What shipping methods do you support?
answer:We support global shipping via DHL, FedEx, UPS, and other major carriers to ensure reliable delivery.
question:Can you provide upgraded or alternative models?
answer:Yes, upgraded or alternative models are available. Contact us for details and compatibility verification.
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 is shipping cost high? Are there cheaper options?
answer:Shipping cost varies by carrier and destination. We offer DHL, FedEx, UPS. Contact us for discounted rates.
question:What shipping methods do you support?
answer:We support global shipping via DHL, FedEx, UPS, and other major carriers to ensure reliable delivery.
question:Can you provide upgraded or alternative models?
answer:Yes, upgraded or alternative models are available. Contact us for details and compatibility verification.
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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