APPROVED VENDOR Alloy Steel Square Bar: 1 in Thick, 0 in/-0.009 in, 1 in x 6 ft Nominal Size (WxL)
The APPROVED VENDOR Alloy Steel Square Bar (SKU 2HKK3) is a High-Strength 4140 Alloy Steel Flat Bar, cold rolled with a thickness tolerance of 0 in/-0.009 in and a nominal size of 1 in x 6 ft. It is heat treatable…
SKU 3G-OTH-591125
Need installation or engineering help?
Ask a question
Product Description
The APPROVED VENDOR Alloy Steel Square Bar (SKU 2HKK3) is a High-Strength 4140 Alloy Steel Flat Bar, cold rolled with a thickness tolerance of 0 in/-0.009 in and a nominal size of 1 in x 6 ft. It is heat treatable and includes a Material Certificate with Lot Number (MPN 40S1-72).
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 tooling components that require heat treatable properties. It is commonly specified in industrial maintenance, automotive, and general fabrication applications where dimensional stability and strength are critical.
What are the specifications of the APPROVED VENDOR Alloy Steel Square Bar?
The bar is cold rolled, 1 in thick with a thickness tolerance of 0 in/-0.009 in, and a nominal size of 1 in x 6 ft. It is heat treatable and includes a Material Certificate with Lot Number. The manufacturer part number is 40S1-72.
Where to buy the APPROVED VENDOR Alloy Steel Square Bar worldwide?
3G Electric supplies the APPROVED VENDOR Alloy Steel Square Bar to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this cold rolled 4140 bar with material certification.
How to select the right alloy steel square bar for heat treating?
Select a bar that is explicitly marked heat treatable, like this 4140 cold rolled square bar. Verify the thickness tolerance matches your machining allowance. Always request a Material Certificate with Lot Number to confirm chemistry and traceability before heat treatment.
Used in
Common applications for APPROVED VENDORAPPROVED VENDOR Products
3G Electric supplies APPROVED VENDOR 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.









