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Home Product 1/4-20x3 Hex Bolts | FastenMaster ProSeries | Stainless Steel Machine Screws for Automotive & Construction
US hexagon socket head cap 1/4-20*3

1/4-20x3 Hex Bolts | FastenMaster ProSeries | Stainless Steel Machine Screws for Automotive & Construction

1/4-20x3 Hex Bolt
UNC Threaded Fastener
1/4-20 Machine Screw
1/4-20*3
1/4-20x3 Hex Bolt, UNC Threaded Fastener, 1/4-20 Machine Screw with Full Threads, Zinc-Plated Grade 2 Steel for General Purpose Applications.
Categories:Fasteners & Fixings
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Product Description

The 1/4-20x3 Hex Bolt is a precision UNC Threaded Fastener engineered for robust mechanical assemblies. Featuring a 1/4-inch nominal diameter with 20 threads per inch (UNC specification) and a 3-inch shaft length, this 1/4-20 Machine Screw provides secure fastening in industrial machinery, automotive systems, and construction frameworks. Constructed from grade-8 steel with optional galvanized or stainless steel coatings, it operates reliably within -40°F to 250°F (-40°C to 121°C) environments, offering tensile strengths up to 150,000 psi. Its hex-head design ensures compatibility with standard 7/16-inch wrenches for easy installation. While ideal for high-load applications due to its shear resistance, prolonged exposure to corrosive agents may require additional protective treatments. This fastener excels in scenarios demanding precision threading alignment, structural stability, and compatibility with UNC-threaded nuts or pre-tapped components.
Parameter Specification
Product Name 1/4-20x3 Hex Bolt
Thread Type Unified National Coarse (UNC)
Nominal Diameter 1/4" (0.250")
Threads per Inch 20
Length 3" (76.2 mm)
Head Type Hexagon Head
Material Carbon Steel
Surface Finish Zinc Plated
Threaded Fastener Category Machine Screw
Drive Style Hex Key (Allen)
Tensile Strength Grade 2 (74,000 psi)
Compliance Standard ASME B18.2.1
Typical Applications Machinery Assembly, Structural Fastening
question:What shipping methods do you offer?
answer:We support DHL, FedEx, UPS, and other major shipping carriers.
question:Can you provide shipment photos or purchase details for similar products?
answer:Yes, we offer shipment photos, purchase dates, and product specifications upon request.
question:How is refurbished product failure handled post-purchase?
answer:We provide free replacement/refund for confirmed refurbished failures, with further investigations as needed.
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 shipping methods do you offer?
answer:We support DHL, FedEx, UPS, and other major shipping carriers.
question:Can you provide shipment photos or purchase details for similar products?
answer:Yes, we offer shipment photos, purchase dates, and product specifications upon request.
question:How is refurbished product failure handled post-purchase?
answer:We provide free replacement/refund for confirmed refurbished failures, with further investigations as needed.
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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