Body diameter is central to flats "A" and "B" within .002 T.I.R.
Eliminates the necessity of milling long slots or pockets for other stiles of keys. All sizes have 5/8 diameter shank making them interchangeable. Can be fastened from the bottom with a 1/4-20 socket head cap screw or from the top with a 5/16-18 socket head cap screw.
BLACK OXIDE FINISH.

Carburized and Hardened 1/32 deep. Precision Ground.
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• INCH SIZES
• METRIC SIZES

- Reduce fixture costs
- Cut extra set-up time
- Meet blueprint tolerances to the decimal point
- Completely interchangeable
Material 4140
Heat Treat: RC34-38
Now you can locate jig and fixtures on machine tool tables and position the part to be machined in one operation. Our Sine Fixture Keys eliminate the need to slot fixture bases, make step fixture keys, drill and tap keys. All you need to do is ream two 5/8" or 3/4" holes, depending on the table size. Variations in table slot sizes are easily taken care of by the wide variety of Sine Fixture Keys available.
Table slot sizes are designated by the "B" column. Shank sizes are designated in the "A" column. The shanks have an expansion feature whereby the keys can be locked in the fixture from either the top or the bottom of the fixture base.

Step Fixture Keys are used for two different table slot sizes by rotating key 90o.
BLACK OXIDE FINISH.