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Home Product 1/4-20*4 Titan Series Stainless Steel Hex Bolt, High-Strength Fastener for Automotive Assembly
US hexagon socket head cap 1/4-20*4

1/4-20*4 Titan Series Stainless Steel Hex Bolt, High-Strength Fastener for Automotive Assembly

1/4-20 UNC Screw
1/4-20 Hex Bolt
1/4-20x4 Machine Screw
1/4-20*4
1/4-20 UNC Screw, 1/4-20 Hex Bolt, also referred to as 1/4-20x4 Machine Screw, designed for secure fastening in machinery, equipment, and hardware applications. Features 1/4-inch diameter, 20 threads per inch, 4-inch length, and UNC thread specification. Ideal for industrial or DIY projects requiring reliable hex-head bolting solutions.
Categories:Fasteners & Fixings
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Product Description

The 1/4-20x4 Machine Screw is a precision-engineered fastening component compliant with 1/4-20 UNC Screw threading standards, featuring a 4-inch length and a 1/4-20 Hex Bolt configuration for secure mechanical integration. Designed for industrial automation, robotics, and automotive systems, it operates within a voltage-agnostic environment and is compatible with standard modular assemblies. Its corrosion-resistant steel construction ensures durability across a temperature range of -40°C to +120°C. While offering high tensile strength (up to 150 ksi) and compatibility with universal wrench sizes (7/16" hex), installation requires proper torque calibration to prevent thread stripping. The screw's 1/4-20 UNC profile enables direct connection with pre-tapped modules, eliminating adapters in most mechanical interfaces. Limited to physical mounting applications, it does not incorporate electrical or communication interfaces but serves as a critical structural element in multi-component systems requiring precise alignment and vibration resistance.
Parameter Specification
Thread Specification 1/4-20 UNC
Nominal Diameter 0.250" (1/4 inch)
Threads Per Inch 20
Shank Length 4"
Drive Type Hex Head / Phillips (varies by product type)
Material Grade Grade 2, Grade 5, or 18-8 Stainless Steel
Surface Finish Zinc Plated, Plain, or Black Oxide
Product Type Hex Bolt, Machine Screw, Cap Screw
Head Style Hexagonal (1/4-20 Hex Bolt), Flat Head (Machine Screw)
Thread Engagement Full Thread Length (1/4-20x4 Machine Screw)
question:Why are the labels cut off when we received the goods?
answer:Labels may be removed due to authorization or regional sales policies. This doesn’t affect product functionality. Contact us for further checks.
question:What payment methods do you accept?
answer:We accept TT, PayPal, and other mainstream methods. Choose the most convenient option, and we’ll provide secure payment instructions.
question:Why can’t you supply discontinued models others have?
answer:We focus on current models to ensure quality and stock. Others may offer refurbished/used items, which carry reliability risks.
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 are the labels cut off when we received the goods?
answer:Labels may be removed due to authorization or regional sales policies. This doesn’t affect product functionality. Contact us for further checks.
question:What payment methods do you accept?
answer:We accept TT, PayPal, and other mainstream methods. Choose the most convenient option, and we’ll provide secure payment instructions.
question:Why can’t you supply discontinued models others have?
answer:We focus on current models to ensure quality and stock. Others may offer refurbished/used items, which carry reliability risks.
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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