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Home Product M3*40 Electronic Screws - Stainless Steel PCB Mounting, High Torque Micro Fasteners for Electronics Assembly
Electronic screws M3*40

M3*40 Electronic Screws - Stainless Steel PCB Mounting, High Torque Micro Fasteners for Electronics Assembly

M3x40 machine screws
DIN 912 hex screws
PCB mounting screws M3
Electronic screws M3*40
M3x40 machine screws, DIN 912 hex screws, designed for PCB mounting applications. Precision-threaded for secure electronic assemblies with durable zinc-plated steel construction.
Categories:Fasteners & Fixings
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Product Description

These M3x40 machine screws are precision-engineered DIN 912 hex screws designed for secure PCB mounting in industrial electronics. Measuring 3mm diameter with 40mm length, these PCB mounting screws M3 feature ISO 4762-compliant hex socket heads for tool compatibility and vibration resistance. Constructed in steel with optional corrosion-resistant plating, they support operating temperatures from -40°C to +120°C and maintain structural integrity in high-voltage environments up to 600V. Widely used in automation systems, telecom infrastructure, and power supply units, their salient advantages include enhanced thread engagement for improved thermal stability and recessed head design for low-profile installations. Potential limitations include reduced torque capacity in hardened aluminum substrates without proper thread preparation. Compatible with standard M3 nuts and standoffs, these screws accommodate standard 2.5mm hex keys for installation.
Parameter Specification
Thread Size M3x0.5
Length 40 mm
Standard DIN 912/ISO 4762
Head Type Hex Socket
Drive Type Hex Key (2.5 mm)
Material Stainless Steel A2-70
Tensile Strength 700 MPa min
Surface Finish Plain
Torque Rating 4.6 Nm max
Application PCB board installation, electronics assembly, mechanical fixtures
question:What happens if a product malfunctions and is found to be refurbished?
answer:We offer free repair or replacement for refurbished items under warranty.
question:Can shipments be declared with low value for customs?
answer:Yes, low value declaration is possible if compliant with local customs regulations.
question:Can you provide upgraded or alternative models?
answer:Yes, we offer upgraded/alternative models based on availability and client needs.
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:What happens if a product malfunctions and is found to be refurbished?
answer:We offer free repair or replacement for refurbished items under warranty.
question:Can shipments be declared with low value for customs?
answer:Yes, low value declaration is possible if compliant with local customs regulations.
question:Can you provide upgraded or alternative models?
answer:Yes, we offer upgraded/alternative models based on availability and client needs.
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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