Limit Screw Plug Set for Testing

Brand :

NIIGATASEIKI

Caution

Product Description

Essential product for checking thread precision. Screw gauge enabling easy checking of screw accuracy on the Go and No Go sides.
[Features]
· Inspects the upper limit and lower limit of the predetermined dimension accuracy of the screw part.
· Machining (GPWP) and ISO system specifications can also be manufactured.
[Applications]
· Used for inspecting screws.
· The gauge classifications for screw limit gauge are determined with the same grades as the screws to be measured.
· If the gauge GO side is passed through comfortably and the NO GO side does not screw in two turns or more, then the screw is judged to have passed.

What is thread gauge

Thread gauge is used to check the pitch of female screw for specifications.
As to limit thread gauge, it can check and decide whether the grade of screw
is the same as the grade of gauge.

Instructions for use

① First, the GO side will pass through smoothly.
② Then, the NO-GO side will not pass through even with two or more turns .(JIS Grade)
Then, the NO-GO side will not pass through when turned more than two times. (ISO Grade)
If the grade inspection of manufactured screw by thread gauge meets above conditions
① and ②, it can be judged as a qualified product.
*Make sure there is no error with specifications and grades.

Example for use

■GO side

① First, GO side will pass through smoothly.

■NO-GO side

② Then, NO-GO side will not pass through even with two or more
turns. (JIS Grade)
Then, NO-GO side will not pass through when turned more than
two times. (ISO Grade)

If the grade inspection of manufactured screw by thread gauge meets above conditions
① and ②, it can be judged as a qualified product.