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Home Product M4*55-2# Stainless Steel Hex Head Bolt, Heavy Duty Fastener for Automotive Machinery Assembly
M4*55-2#

M4*55-2# Stainless Steel Hex Head Bolt, Heavy Duty Fastener for Automotive Machinery Assembly

M4x55-2# bolt
metric screw size 4
2# machine fastener
M4*55-2#
M4x55-2# bolt, metric screw size 4 machine fastener with 2# threading specifications, designed for precision industrial applications and standard equipment assembly requirements.
Categories:Fasteners & Fixings
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Product Description

The M4x55-2# bolt is a precision metric screw featuring a 4 mm diameter and 55 mm length, designed as a 2# machine fastener for heavy-duty assembly applications. Crafted from corrosion-resistant stainless steel (A2-70 grade) with a zinc-plated finish, it operates within a temperature range of -50°C to +150°C, ensuring durability in automotive, aerospace, and industrial machinery environments. This fastener complies with ISO 4762 standards, offering tensile strength up to 700 MPa and vibration resistance due to its 8.8 mechanical property class. Its hex socket head requires a 4 mm hex key for installation, balancing compact design with high-stress performance. While lacking electrical interfaces or modular connectivity, it excels in structural reliability, though its specialized installation tool may limit accessibility in field repairs. The thread pitch of 0.7 mm ensures secure fastening in metal or high-density polymer substrates.
Parameter Specification
Bolt Type M4x55-2# Bolt (Metric Machine Fastener)
Thread Size M4 (Metric Screw Size 4)
Nominal Diameter 4 mm
Length (L) 55 mm
Thread Class 2#
Material Grade Class 8.8 Carbon Steel
Surface Finish Zinc Plated (ISO 4042)
Tensile Strength 800 MPa
Thread Pitch 0.7 mm (Coarse Thread)
Head Style Hexagonal (ISO 4017)
Drive Type 6 mm Hex Socket
Compliance DIN 933 / ISO 898-1
question:What payment methods do you accept?
answer:We accept TT, PayPal, credit cards, and other major payment methods.
question:Do you accept payment after delivery?
answer:We require upfront payment or LC. Exceptions require prior negotiation.
question:Why is a handling fee charged?
answer:Handling fees cover payment processing costs like transaction fees, currency conversion, and bank charges.
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 payment methods do you accept?
answer:We accept TT, PayPal, credit cards, and other major payment methods.
question:Do you accept payment after delivery?
answer:We require upfront payment or LC. Exceptions require prior negotiation.
question:Why is a handling fee charged?
answer:Handling fees cover payment processing costs like transaction fees, currency conversion, and bank charges.
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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