Clearance Holes

clearance holes
High quality shims from Stephens Gaskets

Brass Shim Washers Manufacturing Experts & Bespoke Brass Shim Washers Specialists
Call 0121 544 5808 Today 

Bespoke Manufacturing

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Instant Quote Service

Worldwide Delivery

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Various Gauges/Thicknesses

Bespoke Manufacturing

l

Instant Quote Service

Worldwide Delivery

R

Various Gauges/Thicknesses

What is a clearance hole?

A clearance hole is a hole through an object which is big enough to enable threads of a screw or bolt to pass through but not the head of the screw or bolt. It allows a screw to pass through it without the threads biting into the material. This is particularly important when using screws with threads that are formed on the entire length of the screw shank. 

Please contact us if you have any questions regarding clearance holes. 

Clearance holes for metric bolts:

THREAD CLEARANCE HOLE
CLOSE FIT MEDIUM FIT FREE FIT
M1.6 1.7 1.8 2.0
M2 2.2 2.4 2.6
M2.5 2.7 2.9 3.1
M3 3.2 3.4 3.6
M4 4.3 4.5 4.8
M5 5.3 5.5 5.8
M6 6.4 6.6 7.0
M7 7.4 7.6 8.0
M8 8.4 9.0 10.0
M10 10.5 11.0 12.0
M12 13.0 14.0 15.0
M14 15.0 16.0 17.0
M16 17.0 18.0 19.0
M18 19.0 20.0 21.0
M20 21.0 22.0 24.0
M22 23.0 24.0 26.0
M24 25.0 26.0 28.0
M27 28.0 30.0 32.0
M30 31.0 33.0 35.0
M33 34.0 36.0 38.0
M36 37.0 39.0 42.0
M39 40.0 42.0 45.0
M42 43.0 45.0 48.0
M45 46.0 48.0 50.0
M48 50.0 52.0 54.0
M52 54.0 56.0 58.0

Stephens Gaskets are Brass Shim Washer Manufacturing Experts.
For more information on shim washers or any of our products get in touch today.

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Stephens Gaskets Limited
Units 1-4 Alston Road Oldbury Oldbury, West Midlands B69 2PP
Phone: 0121 544 5808 Fax:121 544 4188, E-mail: sales@stephensgaskets.co.uk