•

The Suburban Tool B-3-SP is a compact 4" x 4" Master-Sine sine plate built for precise angular setups on small, high-accuracy parts in the toolroom and inspection area.

Made of steel and hardened to Rc 58-60, the B-3-SP stands up to repeated toolroom use. Its roll bar and hinge are hardened steel, ground and lapped for straightness and roundness, while the swivel block delivers full face contact with your gage blocks to hold the stack securely. An exclusive locking device inside the hinge roll provides a positive, expanding lock, pulling the top plate down onto the gage blocks without distortion.

  • Steel construction hardened to Rc 58-60 for durability
  • Roll bar and hinge ground and lapped for straightness and roundness
  • Swivel block gives full face contact to hold gage blocks securely
  • Positive expanding hinge lock seats the top plate without distortion
  • 1/4-20 tapped holes for easy part and fixture mounting
  • Made in the USA by Suburban Tool
  • B-3-SP and B-5-SP have 1/4-20 tapped holes. The remaining models have 5/16-18.
  • Side and back rail included.

Available with No Certification, Short Form, or Long Form Certification.

Suburban Tool

Sine Plate, 4" × 4" (B-3-SP)

SKU B-3-SP
$2,403.45

The Suburban Tool B-3-SP is a compact 4" x 4" Master-Sine sine plate built for precise angular setups on small, high-accuracy parts in the toolroom and inspection area.

Made of steel and hardened to Rc 58-60, the B-3-SP stands up to repeated toolroom use. Its roll bar and hinge are hardened steel, ground and lapped for straightness and roundness, while the swivel block delivers full face contact with your gage blocks to hold the stack securely. An exclusive locking device inside the hinge roll provides a positive, expanding lock, pulling the top plate down onto the gage blocks without distortion.

  • Steel construction hardened to Rc 58-60 for durability
  • Roll bar and hinge ground and lapped for straightness and roundness
  • Swivel block gives full face contact to hold gage blocks securely
  • Positive expanding hinge lock seats the top plate without distortion
  • 1/4-20 tapped holes for easy part and fixture mounting
  • Made in the USA by Suburban Tool
  • B-3-SP and B-5-SP have 1/4-20 tapped holes. The remaining models have 5/16-18.
  • Side and back rail included.

Available with No Certification, Short Form, or Long Form Certification.

Specifications

Model B-3-SP
Length 4"
Width 4"
Height 2"
C 3" ±0.0002"
Square & Parallel 0.0002"
Weight 8 lb
$2,403.45

Add a certification?

The certificate is added to your cart as a separate line for this tool.

Allow up to 2 days for order processing. Items not in stock are made to order in Auburn Hills, Michigan; we email you the expected date, and they ship separately with their own shipping charge.

∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology ∼ Made in Auburn Hills, Michigan ∼ America’s Toolmaker for 60+ Years ∼ Precision Workholding & Metrology

The Suburban Tool B-3-SP is a compact 4" x 4" Master-Sine sine plate built for precise angular setups on small, high-accuracy parts in the toolroom and inspection area.

Made of steel and hardened to Rc 58-60, the B-3-SP stands up to repeated toolroom use. Its roll bar and hinge are hardened steel, ground and lapped for straightness and roundness, while the swivel block delivers full face contact with your gage blocks to hold the stack securely. An exclusive locking device inside the hinge roll provides a positive, expanding lock, pulling the top plate down onto the gage blocks without distortion.

  • Steel construction hardened to Rc 58-60 for durability
  • Roll bar and hinge ground and lapped for straightness and roundness
  • Swivel block gives full face contact to hold gage blocks securely
  • Positive expanding hinge lock seats the top plate without distortion
  • 1/4-20 tapped holes for easy part and fixture mounting
  • Made in the USA by Suburban Tool
  • B-3-SP and B-5-SP have 1/4-20 tapped holes. The remaining models have 5/16-18.
  • Side and back rail included.

Available with No Certification, Short Form, or Long Form Certification.

You may also like

See It In Action

  • Made in Auburn Hills, Michigan

    Precision workholding and metrology since the 1960s

  • UPS shipping on tools 80 lb and under

    Heavier tools are quoted by phone

  • Questions? Call (248) 391-7800

    Or email tools@subtool.com for a quote