Design from round head with square necks, common used in wood connections..Jetty do have more stocks for various sizes on carriage bolts at full thread…
Available production capacity from 3/8"-1-3/8" diameter and length to 17",and the quality as grade 10.9..no nuts matched..
Mechanical Properties as below for referrence:
|Grade 8.8||120,000 P.S.I (85.0 Kg/mm2)||HRC26~32|
|Grade 10.9||150,000 P.S.I (105.0 Kg/mm2)||HRC32~38|
|Grade 12.9||170,000 P.S.I (120.0 Kg/mm2)||HRC38~42|