Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

OEM 4140 Alloy Steel Flat Bar - High-Strength 4140 Alloy Steel Flat Bars
OEMHigh-Strength 4140 Alloy Steel Flat Bars

OEM 4140 Alloy Steel Flat Bar

The APPROVED VENDOR Alloy Steel Square Bar is a high-strength 4140 alloy steel flat bar, cold rolled and heat treatable, with a nominal size of 2 1/2 in x 6 in and a thickness tolerance of 0 in/-0.006 in. It includes…

SKU 3G-OTH-591366

Also listed as: 40S256 · 40S2 5 6 · 40S2-5-6

Brand
OEM
Item
4140 Alloy Steel Flat Bar
Part Number
40S2.5-6
Category
High-Strength 4140 Alloy Steel Flat Bars
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.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OEM
Manufacturer Part Number
40S2.5-6
Type
0 in/-0.006 in, Mill
Fabrication
Cold Rolled
Nominal Size (WxL)
2 1/2 in x 6 in
Thickness Tolerance
0 in/-0.006 in
Certifications Included
Material Certificate with Lot Number

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

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

Product Description

The APPROVED VENDOR Alloy Steel Square Bar is a high-strength 4140 alloy steel flat bar, cold rolled and heat treatable, with a nominal size of 2 1/2 in x 6 in and a thickness tolerance of 0 in/-0.006 in. It includes a Material Certificate with Lot Number for traceability.

Frequently Asked Questions

What is the APPROVED VENDOR Alloy Steel Square Bar used for?

This high-strength 4140 alloy steel square bar is used for machining shafts, gears, and structural components in industrial equipment. Its cold-rolled finish and heat-treatable property make it suitable for applications requiring wear resistance and dimensional stability across manufacturing and maintenance operations.

What are the specifications of the APPROVED VENDOR Alloy Steel Square Bar?

The APPROVED VENDOR Alloy Steel Square Bar is cold-rolled 4140 alloy steel, heat treatable, with a nominal size of 2 1/2 in x 6 in. Thickness tolerance is 0 in/-0.006 in. It includes a Material Certificate with Lot Number for traceability. MPN 40S2.5-6.

Where to buy the APPROVED VENDOR Alloy Steel Square Bar worldwide?

3G Electric supplies the APPROVED VENDOR Alloy Steel Square Bar worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this 4140 alloy steel flat bar with material certification.

How to select the right alloy steel square bar for machining?

Select based on required strength, heat treatability, and dimensional tolerance. The APPROVED VENDOR 4140 alloy steel square bar offers cold-rolled finish and a thickness tolerance of 0 in/-0.006 in. Verify nominal size (2 1/2 in x 6 in) matches your application. Always request a Material Certificate with Lot Number for traceability.

Not sure this is the right part? Photo-identify it

OEM Products

3G Electric supplies OEM high-strength 4140 alloy steel flat bars. 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
Cold-rolled 4140 alloy steel flat bar, heat treatable, with a nominal size of 3 1/2 in x 12 in and thickness tolerance of 0 in/-0.008 in. Includes Material Certificate with Lot Number for traceability. Commonly used for machining shafts, gears, and tooling components requiring wear resistance and dimensional stability
Cold-rolled 4140 alloy steel flat bar, heat treatable, with a nominal size of 3 1/2 in x 12 in and thickness tolerance of 0 in/-0.008 in. Includes Material Certificate with Lot Number for traceability. Commonly used for machining shafts, gears, and tooling components requiring wear resistance and dimensional stability
This 4140 alloy steel flat bar is cold rolled and heat treatable, with a nominal size of 1 1/8 in x 12 in and a thickness tolerance of 0 in/-0.005 in. It includes a Material Certificate with Lot Number for traceability. Commonly used in machining, tooling, and structural applications requiring strength and heat treatability
This 4140 alloy steel flat bar is cold rolled and heat treatable, with a nominal size of 1 1/8 in x 12 in and a thickness tolerance of 0 in/-0.005 in. It includes a Material Certificate with Lot Number for traceability. Commonly used in machining, tooling, and structural applications requiring strength and heat treatability
Cold-rolled 4140 alloy steel flat bar, heat treatable, with nominal dimensions of 3 1/2 in width by 24 in length and a thickness tolerance of 0 in/-0.005 in. Includes a Material Certificate with Lot Number for traceability. Commonly used for machined components such as shafts, gears, and structural parts requiring strength and dimensional accuracy
Cold-rolled 4140 alloy steel flat bar, heat treatable, with nominal dimensions of 3 1/2 in width by 24 in length and a thickness tolerance of 0 in/-0.005 in. Includes a Material Certificate with Lot Number for traceability. Commonly used for machined components such as shafts, gears, and structural parts requiring strength and dimensional accuracy
This cold-rolled 4140 alloy steel flat bar is heat treatable and features a thickness tolerance of 0 in/-0.004 in. Nominal size is 1 in x 12 in (WxL). Includes a material certificate with lot number for traceability. Commonly used in industrial machining, tooling, and structural applications requiring strength and heat treatability
This cold-rolled 4140 alloy steel flat bar is heat treatable and features a thickness tolerance of 0 in/-0.004 in. Nominal size is 1 in x 12 in (WxL). Includes a material certificate with lot number for traceability. Commonly used in industrial machining, tooling, and structural applications requiring strength and heat treatability
Cold-rolled 4140 alloy steel flat bar, heat treatable for increased hardness. Nominal size 1.5 in x 24 in with thickness tolerance 0 in/-0.004 in. Suitable for high-strength components such as shafts, gears, jigs, and fixtures. Includes material certificate with lot number for traceability
Cold-rolled 4140 alloy steel flat bar, heat treatable for increased hardness. Nominal size 1.5 in x 24 in with thickness tolerance 0 in/-0.004 in. Suitable for high-strength components such as shafts, gears, jigs, and fixtures. Includes material certificate with lot number for traceability
High-strength 4140 alloy steel flat bar, cold rolled for tight tolerances and heat treatable. Nominal size 1 3/4 in x 12 in with thickness tolerance 0 in/-0.005 in. Includes material certificate with lot number for traceability. Suitable for machining, tooling, and structural applications requiring strength and heat treatability
High-strength 4140 alloy steel flat bar, cold rolled for tight tolerances and heat treatable. Nominal size 1 3/4 in x 12 in with thickness tolerance 0 in/-0.005 in. Includes material certificate with lot number for traceability. Suitable for machining, tooling, and structural applications requiring strength and heat treatability