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USA INDUSTRIALS Carriage Bolt: Square Neck, 1/4"-20 Thread Size, 5 1/2 in lg, Steel, Grade 2 - Grade 2 Steel Square Neck Carriage Bolts
USA INDUSTRIALSGrade 2 Steel Square Neck Carriage Bolts

USA INDUSTRIALS Carriage Bolt: Square Neck, 1/4"-20 Thread Size, 5 1/2 in lg, Steel, Grade 2

USA INDUSTRIALS Grade 2 Steel Square Neck Carriage Bolts, 5 1/2 in lg, with 1/4"-20 thread size, zinc-plated, and supplied in a 50-pack (MPN ZBOLT-539).

SKU 3G-OTH-684516

Also listed as: ZBOLT539 · ZBOLT 539

Brand
USA INDUSTRIALS
Item
Carriage Bolt: Square Neck, 1/4"-20 Thread Size, 5 1/2 in lg, Steel, Grade 2
Category
Grade 2 Steel Square Neck Carriage Bolts
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Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

USA INDUSTRIALS
Manufacturer Part Number
ZBOLT-539
Type
5 1/2 in lg, Steel, Grade 2, Zinc-Plated, 50 PK
Thread Size
1/4"-20

Technical Documents

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USA INDUSTRIALS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

USA INDUSTRIALS Grade 2 Steel Square Neck Carriage Bolts, 5 1/2 in lg, with 1/4"-20 thread size, zinc-plated, and supplied in a 50-pack (MPN ZBOLT-539).

Frequently Asked Questions

What is a Grade 2 Steel Square Neck Carriage Bolt used for?

USA INDUSTRIALS Grade 2 Steel Square Neck Carriage Bolts are used to fasten metal to wood or metal to metal in construction, machinery assembly, and material handling equipment. The square neck prevents rotation during tightening, making them ideal for structural joints and conveyor systems.

What are the specifications of the ZBOLT-539 carriage bolt?

The ZBOLT-539 is a 5 1/2 in long, Grade 2 steel carriage bolt with a 1/4"-20 thread size. It features a square neck, zinc-plated finish for corrosion resistance, and is supplied in a 50-pack. This bolt is suitable for general industrial fastening applications.

Where to buy USA INDUSTRIALS carriage bolts in worldwide?

3G Electric supplies USA INDUSTRIALS Grade 2 Steel Square Neck Carriage Bolts (ZBOLT-539) to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 50-pack item.

How to select the right carriage bolt for an industrial application?

Select a carriage bolt based on length, thread size, material, and grade. For light-duty metal-to-wood fastening, Grade 2 steel with zinc plating offers adequate strength and corrosion resistance. Ensure the square neck matches the hole shape to prevent spinning during nut tightening.

Used in

Common applications for USA INDUSTRIALS
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Food and beverage — USA INDUSTRIALS food-grade FKM cam-and-groove gaskets for sanitary fluid transfer in processing lines.
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Pharmaceutical manufacturing — USA INDUSTRIALS 316 stainless steel globe valves for precise flow control in clean-room environments.
General industrial MRO — USA INDUSTRIALS polypropylene cam-and-groove fittings for temporary hose connections in plant maintenance.

USA INDUSTRIALS Products

3G Electric supplies USA INDUSTRIALS grade 2 steel square neck carriage bolts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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