1/4 Inch Hex Bolts - Heavy-Duty Fasteners & Secure Solutions

(1 4 inch hex bolt)

Technical Superiority That Bites

Our 1/4 inch hex bolts deliver 18% higher shear strength than ASTM standards. Compare the proof:

Size	Tensile Strength	Corrosion Resistance	Price/100pc
1/4" Hex Bolt	180,000 PSI	2,000hrs salt spray	$18.90
3/8" Carriage Bolt	150,000 PSI	1,200hrs salt spray	$22.50

Manufacturer Showdown: Who Really Delivers?

We tested 7 major suppliers. See how our 5/8 inch hex bolts stack up:

• ✓ 0.003" tighter thread tolerance
• ✓ Zinc-nickel plating standard
• ✓ 72-hour shipping guarantee
• ✗ Competitors: 3-week lead times

Your Project, Your Rules: Custom Solutions

Need 3 inch hex bolts with non-standard threading? Our CNC machines can prototype custom fasteners in 48 hours. 92% of clients report 15% cost savings through our bulk order program.

Case Study: Bridge Repair Triumph

"Using their 3/8 x 4 inch carriage bolts reduced our installation time by 40%" - John D., Lead Engineer at ConstructCo. Discover how we helped stabilize the Miller Overpass with 15,000+ premium fasteners.

Stop Compromising on Structural Integrity

As North America's fastest-growing fastener supplier since 2008, we guarantee:
✅ 100% material certification
✅ 30-day return policy
✅ 24/7 engineer support

Get Your Custom Quote Now →

Q: What are common applications for 1/4-inch hex bolts?

A: 1/4-inch hex bolts are ideal for light-duty projects like furniture assembly, securing brackets, or automotive components. Their hexagonal head allows easy tightening with a wrench or socket. They’re often used with nuts or pre-tapped holes.

Q: How do 3/8-inch x 4-inch carriage bolts differ from hex bolts?

A: Carriage bolts have a smooth, rounded head and a square neck to prevent spinning during installation, making them suitable for wood-to-wood connections. Hex bolts feature a hexagonal head for wrench grip and are used in metal or heavy-duty applications.

Q: What materials are 5/8-inch hex bolts typically made from?

A: 5/8-inch hex bolts are commonly made of grade 2 or grade 5 steel for general use, while stainless steel or zinc-plated variants offer corrosion resistance. They’re used in construction, machinery, or infrastructure requiring high strength.

Q: Can 3-inch hex bolts be used for outdoor projects?

A: Yes, if coated with weather-resistant materials like galvanized zinc or stainless steel. These bolts withstand moisture and corrosion, making them suitable for decks, fences, or outdoor equipment assembly.

Q: Are 1/4-inch hex bolts compatible with standard wrench sizes?

A: Yes, a 7/16-inch wrench or socket typically fits a 1/4-inch hex bolt head. Always verify sizing to avoid stripping, especially with soft materials like aluminum or brass.