Howdo's Clive, Ah took my old nuts and bolts to my local ironmongery place and they matched them up for me. here's the bolts mentioned in the parts catalogue..
253952 BOLT 1/2 UNF X 6.1/2 | shop | www.lrseries.com | L. R. Series
NY608041L NUT 1/2 UNF NYLOC | shop | www.lrseries.com | L. R. Series
hope that helps;)
253952 BOLT 1/2 UNF X 6.1/2 | shop | www.lrseries.com | L. R. Series
NY608041L NUT 1/2 UNF NYLOC | shop | www.lrseries.com | L. R. Series
hope that helps;)