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Home Product M3x12 Metric External Hex Bolts | Hex Head Screws, Stainless Steel Fasteners for Automotive, Machinery
Metric external hexagonal bolts M3*12

M3x12 Metric External Hex Bolts | Hex Head Screws, Stainless Steel Fasteners for Automotive, Machinery

Metric external hex bolts M3x12
M3-12 hex head screws
M3x12 hexagon bolts
Metric external hexagonal bolts M3*12
Metric external hex bolts M3x12 (M3-12 hex head screws), M3x12 hexagon bolts for secure mechanical fastening in machinery, electronics, and equipment assemblies.
Categories:Fasteners & Fixings
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Product Description

Metric external hex bolts M3x12, also known as M3-12 hex head screws or M3x12 hexagon bolts, are precision fasteners designed for secure mechanical connections in tight spaces. These 3mm diameter, 12mm long bolts feature a hexagonal head compatible with standard 2.5mm wrenches, manufactured from steel grade 4.8 or stainless steel A2/A4 with optional zinc plating. They operate effectively in temperatures from -50°C to +150°C, meeting DIN 933 standards. Widely used in electronics, automotive assembly, and machinery for their compact size and high torque capability, their hex head design enables tool access in confined areas while maintaining 4Nm maximum tightening torque. Primary advantages include corrosion resistance and reliable vibration resistance, though their small size limits load-bearing capacity in structural applications. Proper installation requires matching M3 nuts or threaded holes.
Parameter Specification
Standard designation ISO 4017/DIN 933
Thread size M3x12 metric external hex bolts
Head type Hexagon (M3-12 hex head screws)
Overall length 12±0.3mm
Thread pitch 0.5mm coarse thread
Hex head width 5.5mm across flats
Material grade Class 8.8 steel
Surface finish Electro-zinc plated
Drive type Hex key (Allen) driven
Thread tolerance 6g per ISO 965-1
Applicable standards M3x12 hexagon bolts compliant with ISO 898-1
question:What is the average delivery time for international orders?
answer:Delivery time varies by destination and shipping method, typically 7-21 business days with tracking provided.
question:What payment methods do you accept for international transactions?
answer:We accept bank transfer, LC, PayPal, and other secure methods for international payments.
question:What is your return policy for defective products?
answer:Defective products can be returned or replaced within 30 days of receipt with proof of issue.
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 is the average delivery time for international orders?
answer:Delivery time varies by destination and shipping method, typically 7-21 business days with tracking provided.
question:What payment methods do you accept for international transactions?
answer:We accept bank transfer, LC, PayPal, and other secure methods for international payments.
question:What is your return policy for defective products?
answer:Defective products can be returned or replaced within 30 days of receipt with proof of issue.
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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