Cart Over $1000? Contact Us Now for Further Discounts on Large Orders!


Shop all Products
Shop Aerospace Materials

Open for Orders 24/7!

Deals
Get a Quick Quote!
round-bar-large-drillrod-new-min-4superZoom

Round Bar

-2955 Products

We carry metal round bar stock in alloy steel, aluminum, beryllium copper, brass, bronze, carbon fiber, carbon steel, cast iron, copper, maraging steel, nickel silver, nickel, plastic, stainless steel, and titanium. Most of our metal round bar is available in full size and custom cut lengths. Whether you're looking for a perfectly sized bright bar or a large quantity of durable plastic, you can price and order round bar from Online Metals and enjoy the convenience of delivery directly to you.

Sort by

Size
  • Size
  • Price:Low to High
  • Product Name: A to Z
  • Product Name: Z to A
  • Relevance
  • Price:High to Low

Close

Refine Your Results

Clear Search

Filters

Material

Alloy/Type

Production Method

Surface

Grade

Color

Domestic

Finish

Temper

DFARS

ASIN

Shape

Can't find what you need?

Contact our experienced US-based customer service team for hard-to-source materials.


3/8" Carbon Steel Round Bar Commercial Grade Hot Rolled - 
Part #: 10234

3/8" Carbon Steel Round Bar Commercial Grade Hot Rolled -
Part #: 10234

Click for more details

mild-steel-round-bar-hot-rolled-a36-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $4.50 ea.
  • 24″ (2 ft.) - $4.96 ea.
  • 36″ (3 ft.) - $5.01 ea.
  • 48″ (4 ft.) - $5.12 ea.
  • 72″ (6 ft.) - $6.73 ea.
  • 96″ (8 ft.) - $8.38 ea.
  • 240″ (20 ft.) - $17.40 ea. -LTL freight rates apply
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$4.50 ea.
$4.50 for 1

3/8" Beryllium Copper Round Bar-173 - 
Part #: 19667

3/8" Beryllium Copper Round Bar-173 -
Part #: 19667

Click for more details

copper-round-bar-173-hard-drawn-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $48.27 ea.
  • 24″ (2 ft.) - $91.25 ea.
  • 36″ (3 ft.) - $134.75 ea.
  • 48″ (4 ft.) - $174.73 ea.
  • 72″ (6 ft.) - $240.85 ea.
  • 96″ (8 ft.) - $308.40 ea.
  • 144″ (12 ft.) - $424.42 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$48.27 ea.
$48.27 for 1

3/8" Brass Round Bar 314-H02 Extruded - 
Part #: 18181

3/8" Brass Round Bar 314-H02 Extruded -
Part #: 18181

Click for more details

beryllium-copper-round-bar-moldmax-high-hard-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $13.10 ea.
  • 24″ (2 ft.) - $25.52 ea.
  • 36″ (3 ft.) - $34.81 ea.
  • 48″ (4 ft.) - $43.39 ea.
  • 72″ (6 ft.) - $61.30 ea.
  • 96″ (8 ft.) - $76.37 ea.
  • 144″ (12 ft.) - $95.05 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$13.10 ea.
$13.10 for 1

3/8" Brass Round Bar 360-H02 Extruded - 
Part #: 1259

3/8" Brass Round Bar 360-H02 Extruded -
Part #: 1259

Click for more details

brass-round-bar-360-h02-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $7.83 ea.
  • 24″ (2 ft.) - $15.27 ea.
  • 36″ (3 ft.) - $20.82 ea.
  • 48″ (4 ft.) - $25.95 ea.
  • 72″ (6 ft.) - $36.67 ea.
  • 96″ (8 ft.) - $45.66 ea.
  • 120″ (10 ft.) - $47.37 ea.
  • 144″ (12 ft.) - $56.85 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$7.83 ea.
$7.83 for 1

3/8" Stainless Round Bar 455-Annealed - 
Part #: 20968

3/8" Stainless Round Bar 455-Annealed -
Part #: 20968

Click for more details

stainless-round-bar-455-annealed-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $22.01 ea.
  • 24″ (2 ft.) - $42.82 ea.
  • 36″ (3 ft.) - $58.45 ea.
  • 48″ (4 ft.) - $72.88 ea.
  • 72″ (6 ft.) - $102.90 ea.
  • 96″ (8 ft.) - $128.16 ea.
  • 144″ (12 ft.) - $159.55 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$22.01 ea.
$22.01 for 1

3/8" Lead Free Brass Round Bar 693 - 
Part #: 24877

3/8" Lead Free Brass Round Bar 693 -
Part #: 24877

Click for more details

brass-round-bar-360-h02-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $12.26 ea.
  • 24″ (2 ft.) - $23.87 ea.
  • 36″ (3 ft.) - $32.58 ea.
  • 48″ (4 ft.) - $40.61 ea.
  • 72″ (6 ft.) - $57.34 ea.
  • 96″ (8 ft.) - $71.43 ea.
  • 144″ (12 ft.) - $88.92 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$12.26 ea.
$12.26 for 1

3/8" Nickel Round Bar 400 - 
Part #: 24923

3/8" Nickel Round Bar 400 -
Part #: 24923

Click for more details

nickel-round-bar-400-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $43.38 ea.
  • 24″ (2 ft.) - $82.00 ea.
  • 36″ (3 ft.) - $121.12 ea.
  • 48″ (4 ft.) - $157.05 ea.
  • 72″ (6 ft.) - $216.47 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$43.38 ea.
$43.38 for 1

3/8" Nickel Round Bar C276 - 
Part #: 10670

3/8" Nickel Round Bar C276 -
Part #: 10670

Click for more details

nickel-round-bar-c276-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $64.42 ea.
  • 24″ (2 ft.) - $121.74 ea.
  • 36″ (3 ft.) - $179.80 ea.
  • 48″ (4 ft.) - $233.10 ea.
  • 72″ (6 ft.) - $321.36 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$64.42 ea.
$64.42 for 1

3/8" Stainless Round Bar 304/304L Cold Finish Domestic - 
Part #: 23771

3/8" Stainless Round Bar 304/304L Cold Finish Domestic -
Part #: 23771

Click for more details

Stainless Round Bar 304

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $4.50 ea.
  • 24″ (2 ft.) - $8.35 ea.
  • 36″ (3 ft.) - $11.47 ea.
  • 48″ (4 ft.) - $14.36 ea.
  • 60″ (5 ft.) - $56.82 ea.
  • 72″ (6 ft.) - $20.36 ea.
  • 96″ (8 ft.) - $25.46 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$4.50 ea.
$4.50 for 1

3/8" Titanium Round Bar Grade 5 6AL-4V - 
Part #: 4732

3/8" Titanium Round Bar Grade 5 6AL-4V -
Part #: 4732

Click for more details

titanium-round-bar-6al-4v-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $36.90 ea.
  • 24″ (2 ft.) - $69.74 ea.
  • 36″ (3 ft.) - $102.99 ea.
  • 48″ (4 ft.) - $133.57 ea.
  • 72″ (6 ft.) - $184.11 ea.
  • 96″ (8 ft.) - $235.75 ea.
  • 144″ (12 ft.) - $324.43 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$36.90 ea.
$36.90 for 1

3/8" Titanium Round Bar Grade 23 6AL-4V ELI - 
Part #: 6771

3/8" Titanium Round Bar Grade 23 6AL-4V ELI -
Part #: 6771

Click for more details

titanium-round-bar-6al-4v-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $38.56 ea.
  • 24″ (2 ft.) - $72.92 ea.
  • 36″ (3 ft.) - $107.67 ea.
  • 48″ (4 ft.) - $139.62 ea.
  • 72″ (6 ft.) - $192.47 ea.
  • 96″ (8 ft.) - $246.46 ea.
  • 144″ (12 ft.) - $339.16 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$38.56 ea.
$38.56 for 1

3/8" Titanium Round Bar Grade 2 - 
Part #: 6786

3/8" Titanium Round Bar Grade 2 -
Part #: 6786

Click for more details

titanium-round-bar-grade-2-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $37.86 ea.
  • 24″ (2 ft.) - $71.51 ea.
  • 36″ (3 ft.) - $105.62 ea.
  • 48″ (4 ft.) - $136.93 ea.
  • 72″ (6 ft.) - $188.79 ea.
  • 96″ (8 ft.) - $241.73 ea.
  • 144″ (12 ft.) - $332.65 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$37.86 ea.
$37.86 for 1

3/8" Stainless Round Bar 13-8 PH Cond. A - 
Part #: 25627

3/8" Stainless Round Bar 13-8 PH Cond. A-
Part #: 25627

Click for more details

stainless-round-bar-13-8-centerless-ground-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

3/8" Beryllium Copper Round Bar-172 - 
Part #: 27596

3/8" Beryllium Copper Round Bar-172 -
Part #: 27596

Click for more details

copper-round-bar-172-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $45.56 ea.
  • 24″ (2 ft.) - $86.11 ea.
  • 36″ (3 ft.) - $127.16 ea.
  • 48″ (4 ft.) - $164.91 ea.
  • 72″ (6 ft.) - $227.31 ea.
  • 96″ (8 ft.) - $291.06 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

$45.56 ea.
$45.56 for 1

3/8" Dia. Aluminum Round Rod 6061-T6 - 36" Long (3 Pieces) - 
Part #: mp-00000624

3/8" Dia. Aluminum Round Rod 6061-T6 - 36" Long (3 Pieces) -
Part #: mp-00000624

Click for more details

Sold & shipped by K&S Precision Metals

Dimensions

  • Diameter: 0.375"
  • Ships In: 1 Business Day
See all available dimensions for this product

Pack of 3

QTY

$26.99 ea.
$26.99

3/8" Dia. Aluminum Round Rod 6061-T6 - 12" Long (1 Piece) - 
Part #: mp-00000621

3/8" Dia. Aluminum Round Rod 6061-T6 - 12" Long (1 Piece) -
Part #: mp-00000621

Click for more details

Sold & shipped by K&S Precision Metals

Dimensions

  • Diameter: 0.375"
  • Ships In: 1 Business Day
See all available dimensions for this product

Pack of 1

QTY

$6.99 ea.
$6.99

3/8" Dia. Stainless Round Rod 303 - 12" Long (1 Piece) - 
Part #: mp-00000671

3/8" Dia. Stainless Round Rod 303 - 12" Long (1 Piece) -
Part #: mp-00000671

Click for more details

Sold & shipped by K&S Precision Metals

Dimensions

  • Diameter: 0.375"
  • Ships In: 1 Business Day
See all available dimensions for this product

Pack of 1

QTY

$15.99 ea.
$15.99

3/8" Dia. Stainless Round Rod 303 - 36" Long (3 Pieces) - 
Part #: mp-00000676

3/8" Dia. Stainless Round Rod 303 - 36" Long (3 Pieces) -
Part #: mp-00000676

Click for more details

Sold & shipped by K&S Precision Metals

Dimensions

  • Diameter: 0.375"
  • Ships In: 1 Business Day
See all available dimensions for this product

Pack of 3

QTY

$82.99 ea.
$82.99

3/8" Dia. Brass Round Rod 260 - 36" Long (3 Pieces) - 
Part #: mp-00000706

3/8" Dia. Brass Round Rod 260 - 36" Long (3 Pieces) -
Part #: mp-00000706

Click for more details

Sold & shipped by K&S Precision Metals

Dimensions

  • Diameter: 0.375"
  • Ships In: 1 Business Day
See all available dimensions for this product

Pack of 3

QTY

$89.99 ea.
$89.99

3/8" Aluminum Round Bar 6063-T5-Extruded - 
Part #: 26909

3/8" Aluminum Round Bar 6063-T5-Extruded -
Part #: 26909

Click for more details

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $4.50 ea.
  • 24″ (2 ft.) - $5.01 ea.
  • 36″ (3 ft.) - $6.87 ea.
  • 48″ (4 ft.) - $8.57 ea.
  • 72″ (6 ft.) - $12.09 ea.
  • 96″ (8 ft.) - $15.05 ea.
  • 192″ (16 ft.) - $24.98 ea. -LTL freight rates apply
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$4.50 ea.
$4.50 for 1

3/8" Nickel Round Bar Alloy 22 - 
Part #: 27970

3/8" Nickel Round Bar Alloy 22 -
Part #: 27970

Click for more details

nickel-round-bar-600-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $64.13 ea.
  • 24″ (2 ft.) - $121.21 ea.
  • 36″ (3 ft.) - $178.99 ea.
  • 48″ (4 ft.) - $232.08 ea.
  • 72″ (6 ft.) - $319.93 ea.
  • 96″ (8 ft.) - $409.67 ea.
  • 144″ (12 ft.) - $563.76 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

$64.13 ea.
$64.13 for 1

3/8" Stainless Round Bar 17-4 Centerless Ground - 
Part #: mp-00002877

3/8" Stainless Round Bar 17-4 Centerless Ground -
Part #: mp-00002877

Click for more details

Sold & shipped by Boston Centerless

Dimensions

  • Diameter: 0.375"
  • Tolerance: +/-.0001”
  • Ships In: 1-2 Business Days
See all available dimensions for this product
  • 72″ (6 ft.) - $254.20 ea.
  • 144″ (12 ft.) - $266.91 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

$254.20 ea.
$254.20 for 1
quantity discountBuy More & Save up to 82% !
Qty
Price ea.
Savings
2-4
$141.33
44%
5-9
$73.60
71%
10-14
$45.08
82%
15+
$43.50
82%
More
Less

3/8" Stainless Round Bar 17-4 H900 Centerless Ground - 
Part #: mp-00002907

3/8" Stainless Round Bar 17-4 H900 Centerless Ground -
Part #: mp-00002907

Click for more details

Sold & shipped by Boston Centerless

Dimensions

  • Diameter: 0.375"
  • Tolerance: +/-.0001”
  • Ships In: 1-2 Business Days
See all available dimensions for this product
  • 72″ (6 ft.) - $259.58 ea.
  • 144″ (12 ft.) - $272.56 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

$259.58 ea.
$259.58 for 1
quantity discountBuy More & Save up to 81% !
Qty
Price ea.
Savings
2-4
$146.71
43%
5-9
$78.98
69%
10-14
$50.39
80%
15+
$48.88
81%
More
Less

3/8" Brass Round Bar 385-M30 Extruded - 
Part #: 27106

3/8" Brass Round Bar 385-M30 Extruded -
Part #: 27106

Click for more details

brass-round-bar-385-h02-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $11.01 ea.
  • 24″ (2 ft.) - $21.37 ea.
  • 36″ (3 ft.) - $29.19 ea.
  • 48″ (4 ft.) - $36.41 ea.
  • 72″ (6 ft.) - $51.40 ea.
  • 96″ (8 ft.) - $64.02 ea.
  • 144″ (12 ft.) - $79.70 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$11.01 ea.
$11.01 for 1

3/8" Alloy Steel Round Bar 4140 Cold Finished Heat Treated - 
Part #: mp-00002485

3/8" Alloy Steel Round Bar 4140 Cold Finished Heat Treated -
Part #: mp-00002485

Click for more details

Sold & shipped by MSP Metals

Dimensions

  • Diameter: 0.375"
  • Ships In: 1 Business Day
See all available dimensions for this product
  • 12″ (1 ft.) - $5.22 ea.
  • 24″ (2 ft.) - $10.43 ea.
  • 36″ (3 ft.) - $15.65 ea.
  • 48″ (4 ft.) - $20.88 ea.
  • 72″ (6 ft.) - $31.31 ea.
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.
Create Custom Cut

QTY

$5.22 ea.
$5.22 for 1

Can't find what you're looking for?

Contact us for a custom quote