Thread plug gauge: a tool to measure the correctness of the internal thread size. The plug gauge is a special tool for detecting whether the rebar connection sleeve joint is standard or not. According to the sleeves used in each construction site, the tooth angle is 75 degrees and 60 degrees. Please clarify the tooth angle and pitch of the sleeve produced by yourself before purchasing. The thread plug gauge (bolt gauge) has two ends of the same specification as a set for simultaneous use, namely the through gauge and the stop gauge.
1. Use the through gauge to try to screw. If it cannot be screwed in, it is unqualified. At this time, there is no need to use the stop gauge because it is already a defective product.
2. Use the through gauge to try to screw. If it can be screwed in, then use the stop gauge to screw. If the stop gauge cannot be screwed in or only one or two teeth are screwed in, it is qualified.
3. Use the through gauge to try to screw. If it can be screwed in, then use the stop gauge to screw. If the stop gauge cannot be screwed in or only one or two teeth are screwed in, it is qualified.
Thread ring gauge: a tool for measuring the correctness of the external thread size. Our ring gauge is a special tool for detecting whether the steel bar connection thread head is standard or not. According to the sleeve used in each construction site, the tooth angle is 75 degrees and 60 degrees. Please clarify the tooth angle and pitch of the thread head you produce before purchasing. The purpose of the thread ring gauge is to check whether the external thread size of the workpiece is qualified.
Each specification of thread ring gauge is divided into two types: through gauge and stop gauge, which can be purchased separately or together (the marked price is the price of one model, one through gauge or one stop gauge).
During the inspection, only when the through gauge can be screwed with the external thread of the workpiece, and the stop gauge is only screwed with the external thread of the workpiece, and the screwing amount does not exceed two pitches, can the external thread be judged to be qualified; otherwise, the external thread size can be judged to be unqualified. The thread ring gauge is used to detect the quality of the external thread. It only detects whether the external thread meets the use requirements.
For example, to check whether the M25 thread with a pitch of 3.0 meets the process requirements, use an M25*3.0 thread ring gauge (there are two types, one is a through gauge and the other is a stop gauge). The through gauge is for passing, and the stop gauge is for stopping, proving that the processed thread is qualified.
