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

3G Electric
RFQ CartGet a QuoteSign inSign up
APPROVED VENDOR Alloy Steel Rectangular Bar: 0.3125 in Thick, ±0.001 in - Wear-Resistant 4142 Alloy Steel Flat Bars
APPROVED VENDORWear-Resistant 4142 Alloy Steel Flat Bars

APPROVED VENDOR Alloy Steel Rectangular Bar: 0.3125 in Thick, ±0.001 in

APPROVED VENDOR Alloy Steel Rectangular Bar is a Wear-Resistant 4142 Alloy Steel Flat Bar, 0.3125 in thick with a ±0.001 in thickness tolerance and a nominal size of 3 1/2 in x 36 in. This heat-treatable mill-grade…

SKU 3G-OTH-585081

Brand
APPROVED VENDOR
Item
Alloy Steel Rectangular Bar: 0.3125 in Thick, ±0.001 in
Category
Wear-Resistant 4142 Alloy Steel Flat Bars
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
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

Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
19219_36_0
Type
±0.001 in, Mill
Heat Treatable
Heat Treatable
Nominal Size (WxL)
3 1/2 in x 36 in
Thickness Tolerance
±0.001 in
Certifications Included
Material Certificate with Lot Number
View Full Spec Sheet

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

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

Product Description

APPROVED VENDOR Alloy Steel Rectangular Bar is a Wear-Resistant 4142 Alloy Steel Flat Bar, 0.3125 in thick with a ±0.001 in thickness tolerance and a nominal size of 3 1/2 in x 36 in. This heat-treatable mill-grade bar includes a Material Certificate with Lot Number for traceability.

Frequently Asked Questions

What is the APPROVED VENDOR 4142 alloy steel rectangular bar used for?

This wear-resistant 4142 alloy steel flat bar is used in tooling, jigs, fixtures, and machine components that require high strength and abrasion resistance. Its heat-treatable nature allows hardening for demanding industrial applications across machining, material handling, and general fabrication.

What are the specifications of the APPROVED VENDOR 4142 alloy steel rectangular bar?

The bar is 0.3125 in thick with a ±0.001 in thickness tolerance, nominal size 3 1/2 in x 36 in, mill grade, heat treatable, and includes a Material Certificate with Lot Number for traceability. The manufacturer part number is 19219_36_0.

Where to buy APPROVED VENDOR 4142 alloy steel rectangular bar worldwide?

3G Electric supplies the APPROVED VENDOR 4142 alloy steel rectangular bar worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this heat-treatable flat bar.

How to select the right thickness tolerance for a 4142 alloy steel bar?

For precision applications like jigs or dies, choose a tight tolerance such as ±0.001 in to minimize machining stock. The APPROVED VENDOR bar offers this tolerance with a material certificate for traceability. Always verify your design's dimensional requirements before ordering.

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 wear-resistant 4142 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 →

More from APPROVED VENDOR

View all APPROVED VENDOR parts →
Alloy Steel Rectangular Bar: 0.75 in Thick, +0.01 in/-0.045 in, 1 1/2 in x 6 in Nominal Size (WxL) (MPN 42DF.75X1.5-6). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: +0.01 in/-0.045 in; Certifications Included: Material Certificate with Lot Number.
APPROVED VENDOR
Alloy Steel Rectangular Bar: 0.75 in Thick, +0.01 in/-0.045 in, 1 1/2 in x 6 in Nominal Size (WxL) (MPN 42DF.75X1.5-6). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: +0.01 in/-0.045 in; Certifications Included: Material Certificate with Lot Number.
Alloy Steel Rectangular Bar: 0.5 in Thick, ±0.001 in, 3 1/2 in x 18 in Nominal Size (WxL), Mill (MPN 19221_18_0). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: ±0.001 in; Certifications Included: Material Certificate with Lot Number.
APPROVED VENDOR
Alloy Steel Rectangular Bar: 0.5 in Thick, ±0.001 in, 3 1/2 in x 18 in Nominal Size (WxL), Mill (MPN 19221_18_0). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: ±0.001 in; Certifications Included: Material Certificate with Lot Number.
Alloy Steel Rectangular Bar: 0.5 in Thick, +0.01 in/-0.045 in, 2 1/2 in x 36 in Nominal Size (WxL) (MPN 42DF.5X2.5-36). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: +0.01 in/-0.045 in; Certifications Included: Material Certificate with Lot Number.
APPROVED VENDOR
Alloy Steel Rectangular Bar: 0.5 in Thick, +0.01 in/-0.045 in, 2 1/2 in x 36 in Nominal Size (WxL) (MPN 42DF.5X2.5-36). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: +0.01 in/-0.045 in; Certifications Included: Material Certificate with Lot Number.
Alloy Steel Rectangular Bar: 0.25 in Thick, ±0.001 in, 5/8 in x 18 in Nominal Size (WxL), Hot Rolled (MPN 19134_18_0). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: ±0.001 in; Certifications Included: Material Certificate with Lot Number.
APPROVED VENDOR
Alloy Steel Rectangular Bar: 0.25 in Thick, ±0.001 in, 5/8 in x 18 in Nominal Size (WxL), Hot Rolled (MPN 19134_18_0). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: ±0.001 in; Certifications Included: Material Certificate with Lot Number.
Alloy Steel Rectangular Bar: 0.09375 in Thick, ±0.001 in, 3/4 in x 18 in Nominal Size (WxL), Mill (MPN 19139_18_0). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: ±0.001 in; Certifications Included: Material Certificate with Lot Number.
APPROVED VENDOR
Alloy Steel Rectangular Bar: 0.09375 in Thick, ±0.001 in, 3/4 in x 18 in Nominal Size (WxL), Mill (MPN 19139_18_0). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: ±0.001 in; Certifications Included: Material Certificate with Lot Number.
Alloy Steel Rectangular Bar: 1.5 in Thick, +0.01 in/-0.045 in, 3 in x 12 in Nominal Size (WxL) (MPN 42DF1.5X3-12). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: +0.01 in/-0.045 in; Certifications Included: Material Certificate with Lot Number.
APPROVED VENDOR
Alloy Steel Rectangular Bar: 1.5 in Thick, +0.01 in/-0.045 in, 3 in x 12 in Nominal Size (WxL) (MPN 42DF1.5X3-12). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: +0.01 in/-0.045 in; Certifications Included: Material Certificate with Lot Number.
Alloy Steel Rectangular Bar: 0.75 in Thick, +0.01 in/-0.045 in, 3 in x 12 in Nominal Size (WxL) (MPN 42DF.75X3-12). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: +0.01 in/-0.045 in; Certifications Included: Material Certificate with Lot Number.
APPROVED VENDOR
Alloy Steel Rectangular Bar: 0.75 in Thick, +0.01 in/-0.045 in, 3 in x 12 in Nominal Size (WxL) (MPN 42DF.75X3-12). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: +0.01 in/-0.045 in; Certifications Included: Material Certificate with Lot Number.
Alloy Steel Rectangular Bar: 0.19 in Thick, ±0.001 in, 1 3/4 in x 18 in Nominal Size (WxL) (MPN NT3161348). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: ±0.001 in; Certifications Included: Material Test Report.
APPROVED VENDOR
Alloy Steel Rectangular Bar: 0.19 in Thick, ±0.001 in, 1 3/4 in x 18 in Nominal Size (WxL) (MPN NT3161348). Key specifications — Brand: APPROVED VENDOR; Heat Treatable: Heat Treatable; Thickness Tolerance: ±0.001 in; Certifications Included: Material Test Report.