Value Collection 6630-4010 1-2-3 Setup Block Hardened Steel

Product Description

The VALUE COLLECTION 6630-4010 is a matched pair of hardened steel 1-2-3 setup blocks used for precision layout, fixturing, and machining operations. Each block measures 1 inch wide, 2 inches tall, and 3 inches long with an overall tolerance of 0.0001 to 0.0007 inches and a squareness specification of 0.0003 inches. Hardness is rated at 58 to 60 HRC, providing resistance to wear and deformation under repeated clamping loads. Machinists, toolmakers, and setup technicians use these blocks to establish reference planes, square workpieces on milling tables, and support precision grinding setups.

These 1-2-3 blocks are suited for use in machine shops, tool rooms, and production environments where consistent, repeatable setups are required. The 23 total holes — 5 tapped at 3/8-16 and 18 untapped — allow clamping, stacking, and fixture building in multiple orientations. Typical applications include layout work on surface plates, workholding on magnetic chucks, and use as parallels or angle references during precision grinding operations. The matched pair configuration ensures both blocks share the same dimensional profile, making them interchangeable in symmetric setups.

Key Features

• Squareness of 0.0003 inches for reliable reference surface accuracy
• Overall tolerance range of 0.0001 to 0.0007 inches across critical dimensions
• 58 to 60 HRC hardened steel construction resists wear under heavy shop use
• 5 tapped holes (3/8-16) and 18 untapped holes for versatile clamping and stacking configurations
• Sold as a matched pair for symmetric and interchangeable setup applications
• Nominal dimensions of 1 inch x 2 inches x 3 inches provide a known, multi-face reference

Compatibility

Designed as a standard 1-2-3 setup block for general precision machining, layout, and fixturing applications on milling machines, surface grinders, and surface plates.

Installation Notes

Setup blocks are installed and positioned by machinists or toolmakers — no specialized certifications are required, but familiarity with precision measurement practices is recommended. Always clean all mating surfaces of chips, oil, and debris before placing blocks against a reference surface or chuck. Inspect tapped holes for damage before threading fasteners to avoid galling the hardened steel. When using on a magnetic chuck, verify the block is fully seated and stable before engaging the magnetic hold.