Features

Counter Bore Nut Thread Adaptors Add Threads to Clearance Holes

The CN-Series Counter bore Nut Thread Adaptors provide 1/4-20 or 8-32 threads (M4 or M6 for metric versions) to clearance holes of the same size. Model CN-E8T-6 (CN-M4T-6) converts 1/4-20(M6) clearance holes to have 8-32 (M4) threading. These adaptors feature a slotted edge that enables tightening or removal and are sold in sets of 6.

Male-Male Thread Adaptors Convert Between Sizes & Threading Unit

The TA Series Thread Adaptors convert 1/4-20, 8-32, M6, and M4 threads to each other, available in all permutations. Each version is sold in sets of 10 thread adaptors.

Male-Female Adaptors Convert Threads to Smaller Size

The TR series Thread Adaptors convert between a larger threaded hole and either a smaller threaded hole or comparable threading of a different unit. These thread reducers can be used for general purpose needs, but model TR-E2E8-10 is specifically intended to allow post mounting of the New Focus brand Tiny Mounts. These thread reducers are tightened and loosened with a slot in the top designed for a flat-head screw driver and sold in packs of 10.

Easily Attach Mirror Mounts

TR-series thread adaptors are ideal for attaching mirror mounts. Shown here is an ULTIMA® Clear Edge mount attached to an SR-Z series magnetic pedestal.

Box Sets

The SK-TA and M-SK-TA (metric version) Thread Adaptor Sets are organized boxes of 8 different types of male-male and male-female thread adaptors, 10 of each type for a total of 80 pieces. The English unit set includes male-male thread adaptors for 8-32 to 1/4-20, 8-32 to M4, 8-32 to M6, M6 to 1/4-20, and M4 to 1/4-20. The male-female thread adaptors included convert 8-32 to 1/4-20, 8-32 to M6 and M4 to 1/4-20. This kit provides a less expensive option for stocking any optics lab.
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