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Starrett 54391 Precision Ground Flat Stock 5/16" x 5/16" x 36" AISI O1 Tool Steel

Part of: Starrett Precision Ground Flat Stock Tool Steel

Other options in this family: Starrett 53998 Starrett 53978 Starrett 54110 Starrett 54118 Starrett 57519

Manufacturer

Picture for manufacturer Starrett

Part Number

54391
8 reviews
Sale Price

$81.71

2 left at this price

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Usually delivered within 2 days

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Product Details

The Starrett 54391 is a precision ground flat stock bar made from AISI O1 oil hardening tool steel, measuring 5/16" x 5/16" x 36". This high-quality tool steel is ideal for tool and die making, jigs, fixtures, gauges, and precision machining applications.

Key Features:

  • AISI O1 oil hardening tool steel for superior performance and durability
  • Precision ground to tight tolerances for accurate work
  • Dimensionally stable throughout heat treatment processes
  • Excellent for intricate work including thin sections with minimal risk of cracking
  • 5/16" x 5/16" cross-section, 36" length provides versatile material for various projects
  • Ideal for toolmaking, dies, gauges, jigs, and fixtures

O1 tool steel is known for its excellent machinability in the annealed condition and its ability to achieve high hardness levels (up to 62 HRC) after proper heat treatment. The oil hardening process provides deep hardening penetration while maintaining dimensional stability, making this flat stock an excellent choice for both hobbyists and professional machinists working on precision applications.

Easy to order and affordable price.

Easy peasy - Found what I wanted with free shipping.

They had what I needed at a good price and got it to me in good time. Recommended!

You had what I needed. Filling out the form and paying was quick and easy.

very good ok

Product arrived exactly when promised and in perfect condition.

P

Product was easy to find and what I wanted. The whole process was seamless. I love the free shipping but also the option to pay a little and get it out faster which this time I needed.

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