Conical Hexagonal Nut Cadium Plated 1-1/2-6 Grade 9 length_6 The elbows have a 2-11-1/2

The elbows have a 2-11-1/2 thread and they are 90 degrees

The screw has a length of 2" and a thread of 1/2-13

The screws have a thread of 1-3/8-6 and a length of 4-1/2

The screws have a thread of 1-1/2-6 and a length of 9-1/2

Conical Hexagonal Nut Cadium Plated 1-1/2-6 Grade 9 length_6 The elbows have a 2-11-1/2These locknuts have an irregularly shaped thread at the top of the nut that grips the bolt for a stronger hold than nylon insert locknuts. They thread on from the bottom of the nut, allowing more threads to engage the bolt before tightening for easier installation than center lock distorted thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. They'renot reusable. About 20%stronger than high