Part Number: 0075210145306 (Bolt, ribbed neck)Part Number: 0117575775306 (Bolt, ribbed neck)Part Number: 0133671755306 (Bolt, ribbed neck)Part Number: 05584829 (Bolt, ribbed neck)Part Number: 7376152 (Bolt, ribbed neck)Part Number: 74255646-7 (Bolt, ribbed neck)