Cold Rolled Square 1018 - 5/16 Inch
1018 Cold Rolled Square Bar - 5/16" x 5/16" x 144"
This 5/16" x 5/16" 1018 Cold Rolled Square Bar is a low-carbon steel known for its superior surface finish and tight dimensional accuracy. Conforming to ASTM A108, it provides 63,800 PSI tensile strength, ideal for general-purpose machining and fabrication. In stock Los Angeles.
- 1018 Steel Construction
- ASTM A108 Certified
- 63,800 PSI Tensile Strength
- Excellent Machinability
1018 is a low-carbon steel processed through cold drawing, which increases its hardness and strength while creating a smooth, scale-free surface and tight dimensional tolerances. This material offers a good balance of strength, ductility, and toughness, conforming to ASTM A108 standards. Its excellent machinability and good weldability make it a versatile choice for a wide range of manufacturing applications.
As a small-sized bar, this 5/16" square is perfectly suited for producing precision parts such as small shafts, dowel pins, mounting blocks, and custom fasteners. Its clean finish is also beneficial for decorative braces and frames where aesthetics are important and minimal surface prep is desired.
Specifications
- Material: 1018 Cold Rolled Steel
- Standards: ASTM A108
- Strength/Tensile: 63,800 PSI
- Dimensions: 5/16" x 5/16" x 144"
- Finish: Cold Drawn
- Certifications: MTR Available
Applications
- Machinery Components: Shafts, spindles, and pins - tight tolerances reduce secondary processing.
- Fixtures & Jigs: Mounting blocks and alignment guides - machinability allows for precise features.
- Fasteners: Dowel pins and custom studs - good strength and formability for threading.
- General Fabrication: Decorative braces and supports - smooth surface is ready for finishing.
Target Users
Machinists, fabricators, and engineers rely on 1018 Cold Rolled Square for precision and reliability in manufacturing applications throughout the Los Angeles area.
Finish Options
This product comes standard with a cold drawn finish, providing a smooth, scale-free surface and tight dimensional control. This finish is ideal for immediate machining. For specific project requirements, other finishes such as polishing or plating may be available via special order. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Square bar is measured by the length of one of its sides (A) and its overall length. Both sides of a square bar are equal. Use calipers for an accurate reading of the side dimension.
Example: To order this square bar, specify "1018 Cold Rolled Square, 5/16" x 144" length".
Order Checklist
- Product name and required dimensions (5/16" x 5/16" x 144")
- Material specification and quantity
- Confirm grade (1018) meets requirements
- Surface finish requirements (Cold Drawn)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- Cold Rolled Square 1018 - 5/16 Inch
- Material
- 1018 Cold Rolled Steel
- Standards
- ASTM A108
- Key Properties
- 63,800 PSI tensile, Excellent Machinability, Good Weldability
- Primary Applications
- Shafts, Dowels, Fixtures
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 1018 Cold Rolled Square in sizes from 3/16" to 1/2" and lengths up to 144". This 5/16" x 144" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing


