What is the name of the small plastic disc inserted into the center of a 45 record to allow it to fit onto the spindle in the center of a turntable?

Son of The Household Cavalry

It is imaginatively called a 45 R.P.M. adaptor in several hi-fi manuals. May 01 02, 5:55 AM

Barrow boy

A long time ago I had a record collection of 45s and several were ex-juke box discs that needed the plastic insert. From memory they were called 'spiders'. May 01 02, 7:40 AM

Jack Flash

Just to confirm Barrow Boy's answer they were certainly known as spiders when I purchased one in the UK a few years ago. Whether there is a more technical word used within the record industry itself I do not know. May 01 02, 9:03 AM

Son of The Household Cavalry

http://members.tripod.com/~graemej/accseng.htm Large hole adaptor for 45 RPM records ('Spiders') - For a while, many 45 RPM single and extended play records were supplied with a large centre hole. These adaptors fit in the hole and allow the record to be used on a standard turntable spindle. They are no longer manufactured and extremely difficult to find. Personal-CD has been fortunate to locate a quantity of brand new Duotone adaptors and this is possibly the last chance you will have for buying these items at 6 for 6 euros. ONCE THESE ARE SOLD, IT IS DOUBTFUL IF ANY MORE WILL BE FOUND. May 01 02, 6:00 PM

Curious

When I worked in a record shop in the 1970's, these were called spiders. May 01 02, 8:57 PM

mk2norwich

Being a fan of good old vinyl (what exactly ARE these new compact disc thingies?) I have known them as 'spiders' though my mother has always referred to them as 'middles.' They vary in quality - some are either too large or too small for the holes in the centres of the records, while others have a central hole that is too large to fit snugly on the turntable. In the UK, when seven inch single records were the dominant format, the majority of them were manufactured with only a small hole, thus eliminating the need for spiders. These little devices were useful for imported American singles, or ones where the holes had purposely been enlarged for use in Jukeboxes. May 03 02, 10:19 PM

paul6012

I was a DJ during the fifties at a five thousand watt AM station and the jocks all refered to them as "ads"; short for adaptor. Jul 22 08, 7:32 PM