Standard Door Handle Spindle Size

The standard size you need to look out for is 57mm and this is the size between the lever centre or the spindle and the lock centre and thankfully that is a very popular uk size.

Standard door handle spindle size.

Lever to lock size is 57mm on a typical interior locking door handle. Door handle spindle reducers are available in sizes 5mm 8mm 6mm 7mm 7mm 8mm 8 9mm and 8mm 10mm. Spindle 3 1 2 inch straight spindle set with screws for old style mortise door knobs view item 42940 rosette for door knob 2 1 4 inch dia. The majority of spindles are 9 32 square.

You need to establish the spindle size that goes into the knob or lever and also if the center is bigger. It should be noted however. The standard thickness of a spindle is 7 6mm most uk latch manufacturers produce latch openings at 8mm to accommodate this. This size has become the standard size for modern spindles.

Along with a large selection of door handle spindle expansion sleeves adaptors which allow a smaller spindle to be used with standard door furniture. A smaller portion are 5 16 square mostly for levers. However we know that there are a number of latches particularly from the early 20th century that had a slightly smaller opening meaning that a 7mm spindle is required. The modern industry standard cross section thickness size of a door handle spindle is 8mm 5 16 square.