Key principles.
H7 baseline
Hole H7 (positive deviation, 0 to +X). Shaft varies.
h6 baseline
Shaft h6 (negative deviation, 0 to -X). Hole varies.
H7/p6
Standard press fit. Permanent assembly.
H7/g6
Sliding fit. Easy assembly, no clearance.
H7/f7
Running clearance fit. Rotating shafts.
H7/d10
Free running clearance fit.
FAQ
Hole-basis common for machined holes. Shaft-basis for ground shafts. Same outcome.
H7 hole 0 to +0.025 mm (10 mm shaft). p6 shaft +0.014 to +0.026 mm. Press fit interference.
Press fits, slip fits, running fits, free fits. Each has specific clearance/interference range.
Bearing bores H7/h6 typical. Slip fits H7/g6. Press fits H7/p6 or n6.
GD&T defines feature relationships. ISO 286 defines hole-shaft fits. Use either.
Note "10 H7" for hole, "10 p6" for shaft. Mating dimensions implied.
Get an instant quote
Send your CAD — we reply with detailed pricing, lead time, and DFM feedback within 4 working hours.
Talk to an engineer
WhatsApp our team directly. Most messages answered within 12 minutes during work hours.
Explore all services
CNC, 3D printing, injection molding, sheet metal, casting, finishing — one quality system, one partner.
Working on a live project? Send the STEP file and the two or three features you are unsure about — an engineer replies with DFM notes and a price, usually within four working hours.