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Home Product Model 1/4-20x1-5/8 Hex Cap Bolt, FastenPro Gr8 Zn-Plated Machine Screw for Auto Marine
US hexagon socket head cap 1/4-20*1-5/8

Model 1/4-20x1-5/8 Hex Cap Bolt, FastenPro Gr8 Zn-Plated Machine Screw for Auto Marine

1/4-20 Hex Head Screw
1-5/8 Machine Bolt
UNC Thread Stainless Fastener
1/4-20*1-5/8
1/4-20 Hex Head Screw, 1-5/8 Machine Bolt with UNC Thread Stainless Fastener. Corrosion-resistant steel construction for industrial and mechanical applications. Standard hex drive for secure torque.
Categories:Fasteners & Fixings
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Product Description

The 1/4-20 Hex Head Screw is a 1-5/8" machine bolt constructed as a UNC Thread Stainless Fastener with a nominal diameter of 0.25 inches and 20 threads per inch. Fabricated from grade 304/316 stainless steel, it provides corrosion resistance and tensile strength up to 120,000 PSI, suitable for industrial applications in construction, machinery, and automotive assemblies. Designed for standard hex wrench engagement (7/16" across flats), it supports torque up to 10 ft-lbs and operates reliably in temperatures ranging from -40°F to +500°F. Its unified coarse thread ensures compatibility with pre-tapped components, while the anti-galling properties reduce friction during installation. Though optimized for high-stress environments, prolonged exposure to extreme saltwater or acidic conditions may require supplemental coatings. Conforms to ASTM A574 specifications for precision fasteners.
Parameter Specification
Product Type 1/4-20 Hex Head Screw
Fastener Length 1-5/8 Inch (41.28 mm)
Thread Standard UNC Thread Coarse
Diameter (Nominal) 0.25 Inch (6.35 mm)
Threads per Inch 20 TPI
Head Style Hexagonal
Drive Type Hex Key/Wrench
Material Grade Stainless Steel A2/AISI 304
Surface Finish Passivated
Mechanical Property SAE J429 / ASTM A574
Thread Fit Class Class 2B
Torque Requirement 45-55 in-lbs (5.1-6.2 Nm)
question:Do you accept payment after shipment?
answer:We require upfront payment or LC terms; payment after shipment isn't accepted.
question:Why is shipping cost high? Any cheaper options?
answer:Costs depend on carriers, but we can suggest budget-friendly options to reduce your expenses.
question:Do you provide technical selection services?
answer:Yes, we offer tailored technical recommendations based on your needs to ensure optimal compatibility.
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:Do you accept payment after shipment?
answer:We require upfront payment or LC terms; payment after shipment isn't accepted.
question:Why is shipping cost high? Any cheaper options?
answer:Costs depend on carriers, but we can suggest budget-friendly options to reduce your expenses.
question:Do you provide technical selection services?
answer:Yes, we offer tailored technical recommendations based on your needs to ensure optimal compatibility.
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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