1640T-256-N,ROUND STANDOFFNO FINISH - NYLON3
1640T-256-S,ROUND STANDOFFPLAIN STEEL3/16 RD
1640T-256-SS,ROUND STANDOFFPLAIN STAINLESS ST
1640T-440-AL,ROUND STANDOFFPLAIN ALUMINUM3/16
1640T-440-B,ROUND STANDOFFPLAIN BRASS3/16 RD
1640T-440-N,ROUND STANDOFFNO FINISH - NYLON3
1640T-440-S,ROUND STANDOFFPLAIN STEEL3/16 RD
1640T-440-SS,ROUND STANDOFFPLAIN STAINLESS ST