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APPROVED VENDOR Alloy Steel Square Bar: 3.5 in Thick, 0 in/-0.008 in, 3 1/2 in x 6 in Nominal Size (WxL) - High-Strength 4140 Alloy Steel Flat Bars
APPROVED VENDORHigh-Strength 4140 Alloy Steel Flat Bars

APPROVED VENDOR Alloy Steel Square Bar: 3.5 in Thick, 0 in/-0.008 in, 3 1/2 in x 6 in Nominal Size (WxL)

The APPROVED VENDOR Alloy Steel Square Bar (SKU 782M61) is a cold-rolled, heat-treatable 4140 alloy steel flat bar with a nominal size of 3 1/2 in x 6 in and a thickness tolerance of 0 in/-0.008 in. It is supplied as…

SKU 3G-OTH-591170

Brand
APPROVED VENDOR
Item
Alloy Steel Square Bar: 3.5 in Thick, 0 in/-0.008 in, 3 1/2 in x 6 in Nominal Size
Category
High-Strength 4140 Alloy Steel Flat Bars
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
40S3.5-6
Type
0 in/-0.008 in, Mill
Fabrication
Cold Rolled
Heat Treatable
Heat Treatable
Nominal Size (WxL)
3 1/2 in x 6 in
Thickness Tolerance
0 in/-0.008 in
Certifications Included
Material Certificate with Lot Number
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APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APPROVED VENDOR Alloy Steel Square Bar (SKU 782M61) is a cold-rolled, heat-treatable 4140 alloy steel flat bar with a nominal size of 3 1/2 in x 6 in and a thickness tolerance of 0 in/-0.008 in. It is supplied as a mill product with a Material Certificate including Lot Number (MPN 40S3.5-6).

Frequently Asked Questions

What is the APPROVED VENDOR 4140 alloy steel square bar used for?

This cold-rolled, heat-treatable 4140 alloy steel square bar is used for high-strength structural components, shafts, gears, and tooling in industrial machining and fabrication. The material certificate with lot number ensures traceability for critical applications.

What are the specifications of the APPROVED VENDOR 40S3.5-6 alloy steel bar?

The APPROVED VENDOR 40S3.5-6 is a cold-rolled 4140 alloy steel square bar with a nominal size of 3 1/2 in x 6 in, thickness tolerance of 0 in/-0.008 in, and is heat treatable. It includes a material certificate with lot number.

Where to buy APPROVED VENDOR 4140 alloy steel square bar worldwide?

3G Electric supplies the APPROVED VENDOR 4140 alloy steel square bar worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this mill product with material certificate.

How to select the right 4140 alloy steel bar for heat treating?

Select a cold-rolled, heat-treatable 4140 bar like the APPROVED VENDOR 40S3.5-6 for consistent response to hardening. Verify the thickness tolerance (0 in/-0.008 in) matches your machining allowance. Always request a material certificate with lot number for traceability.

Used in

Common applications for APPROVED VENDOR
Laboratory sampling — APPROVED VENDOR clear wide mouth glass bottles for collecting and storing liquid samples in non-sterile environments.
Steam heating maintenance — APPROVED VENDOR forged brass radiator valves for regulating steam flow in commercial building heating systems.
High-pressure cleaning — APPROVED VENDOR turbo spray nozzles for pressure washers used in industrial equipment cleaning up to 6,000 psi.
Cleanroom operations — APPROVED VENDOR vinyl task chairs for seating in ISO 5 classified manufacturing or assembly areas.
General sealing — APPROVED VENDOR natural rubber stoppers for closing laboratory flasks or test tubes in educational or research settings.
Tamper-evident security — APPROVED VENDOR brass lead and wire seals for securing utility meters, cargo containers, or access panels.

APPROVED 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.

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