Machining glossary
What is H7 Bore?
An ISO 286 hole tolerance class widely used for bearing and dowel fits; for a Ø20 mm bore it allows 0 to +0.021 mm.
ISO 9001:2015 Certified
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Calipers, micrometers, height gauge, DTIs
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VCI film, ISPM-15 wooden crates
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Definition
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Why it matters when buying machined parts
Specifying H7 on bores and h6/g6 on shafts gives predictable clearance or transition fits.
At Precision Machining India we apply this daily in our ISO 9001:2015 certified plant in Pune, India. Send us your drawing for a quote within 24 hours.
Illustrative machining and inspection imagery.
Frequently asked questions
Get a quote in 24hWhat is H7 Bore?
An ISO 286 hole tolerance class widely used for bearing and dowel fits; for a Ø20 mm bore it allows 0 to +0.021 mm.
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Related capabilities, materials and markets
Everything below is machined in the same Pune plant to the same ISO 9001:2015 system. Follow whichever is closest to the part you are sourcing.
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Upload STEP, IGES or PDF files. NDA available on request. Quoting: H7 Bore.