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Home Product Model 1/4-20x5.5" Hex Bolt, Grade 8 Stainless Steel, Zinc Plated - Heavy Duty Machinery Fastener

Model 1/4-20x5.5" Hex Bolt, Grade 8 Stainless Steel, Zinc Plated - Heavy Duty Machinery Fastener

1/4-20 threaded fasteners
1/4-20 hex bolts
5.5 inch machine screws
1/4-20*5-1/2
1/4-20 hex bolts and threaded fasteners, 5.5 inch machine screws with durable steel construction for industrial fastening solutions. ANSI-compliant coarse thread design.

Product Description

The model 1/4-20*5-1/2 is a heavy-duty 1/4-20 threaded fastener designed for robust mechanical applications, featuring a 5.5-inch shank length and 1/4-20 thread specifications (0.25-inch diameter, 20 threads per inch). Constructed from high-strength carbon steel with a zinc-plated finish for corrosion resistance, this 1/4-20 hex bolt combines durability with versatility, ideal for assembly in manufacturing, automotive, or construction industries. The hexagonal head enables secure torque application using standard wrenches, while the 5.5-inch machine screw design accommodates thick materials or components requiring extended grip range. Its coarse threads ensure rapid installation and reliable clamping force in high-vibration environments. While offering excellent tensile strength (typically up to 120,000 PSI), the extended length may limit use in confined spaces. Suitable for temperatures ranging from -20°F to 200°F, this fastener meets ASTM standards for industrial-grade hardware, balancing precision engineering with cost-effective maintenance solutions.
Parameter Specification
Thread Specification 1/4-20 UNC
Diameter 0.25 inch (1/4")
Threads per Inch 20 TPI
Length 5.5 inch
Head Type Hex
Material Carbon Steel / Stainless Steel
Surface Finish Zinc-Plated or Plain
Grade Grade 2 / Grade 5 (ASTM)
Drive Type Hex Socket or External Hex
Application 1/4-20 threaded fasteners, hex bolts, 5.5 inch machine screws
question:What is the after-sales process if a product is found to be refurbished and malfunctions?
answer:We offer replacement or refund for verified refurbished items under warranty. Genuine products are ensured for all orders.
question:Can the company provide upgraded or alternative models if needed?
answer:Yes, we can provide upgraded or alternative models. Contact us to confirm specifications and pricing details.
question:Can shipments apply for low-value declaration?
answer:Low-value declaration is permissible per destination regulations. Clients should confirm local customs requirements first.
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 after-sales process if a product is found to be refurbished and malfunctions?
answer:We offer replacement or refund for verified refurbished items under warranty. Genuine products are ensured for all orders.
question:Can the company provide upgraded or alternative models if needed?
answer:Yes, we can provide upgraded or alternative models. Contact us to confirm specifications and pricing details.
question:Can shipments apply for low-value declaration?
answer:Low-value declaration is permissible per destination regulations. Clients should confirm local customs requirements first.
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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