EXW Singapore — collect or forward from our Singapore office.

3G Electric
USA INDUSTRIALS Grade 2 Steel Square Neck Carriage Bolt - Grade 2 Steel Square Neck Carriage Bolts
USA INDUSTRIALSGrade 2 Steel Square Neck Carriage Bolts

USA INDUSTRIALS Grade 2 Steel Square Neck Carriage Bolt

USA INDUSTRIALS Grade 2 Steel Square Neck Carriage Bolts, 1/4"-20 thread size, 5 1/2 in length, supplied in a 50-pack (MPN ZBOLT-540). 3G Electric interprets your demand for standard fasteners and delivers this exact…

SKU 3G-OTH-684499

Also listed as: ZBOLT540 · ZBOLT 540

Brand
USA INDUSTRIALS
Item
Grade 2 Steel Square Neck Carriage Bolt
Part Number
ZBOLT-540
Category
Grade 2 Steel Square Neck Carriage Bolts
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

USA INDUSTRIALS
Manufacturer Part Number
ZBOLT-540
Type
5 1/2 in lg, Steel, Grade 2, 50 PK
Thread Size
1/4"-20

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

USA INDUSTRIALS Grade 2 Steel Square Neck Carriage Bolts, 1/4"-20 thread size, 5 1/2 in length, supplied in a 50-pack (MPN ZBOLT-540). 3G Electric interprets your demand for standard fasteners and delivers this exact OEM-sourced item across 14 industrial departments — with specialist depth in combustion, pumps and controls as a trust anchor, not a limit.

Frequently Asked Questions

What are Grade 2 Steel Square Neck Carriage Bolts used for?

These bolts are used to fasten metal to wood or metal to metal in industrial assemblies, such as conveyor systems, structural frames, and equipment mounting. The square neck prevents rotation during tightening, making them ideal for applications where a flush or low-profile head is required.

What are the specifications of USA INDUSTRIALS ZBOLT-540 carriage bolts?

These are Grade 2 steel square neck carriage bolts with a 1/4"-20 thread size and 5 1/2 in length, supplied in a 50-pack. The manufacturer part number is ZBOLT-540. They are made from steel and meet Grade 2 strength requirements for general-purpose fastening.

Where to buy USA INDUSTRIALS ZBOLT-540 carriage bolts worldwide?

3G Electric supplies USA INDUSTRIALS ZBOLT-540 carriage bolts worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source this exact OEM item across 14 departments, with specialist depth in combustion, pumps, and controls.

How to install square neck carriage bolts correctly?

Insert the bolt through a pre-drilled hole matching the square neck size to prevent spinning. Use a washer under the nut to distribute load, and tighten the nut with a wrench while holding the bolt head stationary. Avoid over-torquing to prevent stripping the threads or damaging the assembly.

Used in

Common applications for USA INDUSTRIALS
Petrochemical industry — USA Industrials A193 B7 heavy hex bolts used in high-temperature flange connections on process piping.
Power generation — A193 B7 heavy hex bolts for bolting applications in steam lines and turbine housings.
Structural steel — Heavy hex bolts for high-strength structural connections in industrial buildings and equipment.
Maintenance and repair — Small packs of A193 B7 bolts for on-site replacement in high-pressure systems.
Chemical processing — Corrosion-resistant bolting for reactors and heat exchangers where elevated temperatures are present.
Oil and gas — A193 B7 bolts for wellhead and pipeline flange assemblies requiring reliable sealing.
Not sure this is the right part? Photo-identify it→

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from USA INDUSTRIALS

View all USA INDUSTRIALS parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first