Screw 1/4-20 x 5/16 in 02011

The Screw 1/4-20 x 5/16 in (part# 02011) is a genuine Tacony OEM socket set screw in black oxide finish, used on the Tornado CK 3030 wide-area vacuum (Model 93030). E, F, G and H, including on the Series J brush motor sheet. It is a genuine Tacony OEM part shared across CleanMax, Powr-Flite and Tornado machines — see the full compatibility list below.

This is not an ordinary machine screw despite the shared thread size. A set screw is headless and driven with a hex key through a socket in its end, so it can be run down flush or below the surface of the part it passes through. Its job is to clamp a component onto a shaft or into a bore by pressing against it — on this machine, locking pulleys and collars in position so they cannot creep along the shaft under drive load.

Set screws are high-stress fasteners in a small package. The socket is the weak point: once a worn or undersized hex key has rounded it out, the screw cannot be tightened or removed properly and usually has to be drilled. Replace any set screw with a damaged socket, a mushroomed or chewed tip, or a thread that has picked up. Always use a correctly sized hex key fully inserted, and fit a new screw rather than reusing one that has already been torqued hard onto a shaft.

Compatible Models for the Screw 1/4-20 x 5/16 in

• Tornado 93030 30″ Clean-Air Carpetkeeper (Wide Area) — Series D, E, F, G and H
• Tornado 93031 30″ Clean-Air Carpetkeeper (Wide Area) 230V
• CleanMax CM-WAV Wide Area Vacuum

These machines are built on the same wide-area platform under different brands and share the great majority of their parts.

Many Tacony fasteners are shared more widely across the Tornado, CleanMax, Riccar, Simplicity and Powr-Flite ranges; if your machine is not listed, call 763-535-0770 and we will confirm before you order.

Twin City Vacuum has been selling and servicing Tacony equipment since 1956 and stocks the genuine 02011 part rather than a hardware-store substitute. Browse the full Tornado 93030 main assembly parts, or read more on the Tornado manufacturer site.

Frequently Asked Questions

What does the Screw 1/4-20 x 5/16 in do on the Tornado 93030?

It is a headless socket set screw, used to lock rotating components such as pulleys and collars onto their shafts. Tightening it clamps the part so it cannot slide or spin on the shaft under drive load.

Is this the same as the other 1/4-20 screws on this machine?

No. It shares the 1/4-20 thread but it is a headless set screw driven by a hex key, not a Phillips machine screw. It cannot be substituted for the round-head screws such as 00086, and they cannot be used in its place — a headed screw will not sit flush in the bore it fits into.

How do I know if my Screw 1/4-20 x 5/16 in needs replacing?

Replace it if the hex socket is rounded or has begun to cam out, if the tip is mushroomed or chewed from bearing on a shaft, or if the thread has galled. A set screw that will not hold a pulley in position after being properly torqued has usually deformed at the tip and should be renewed.

How do I order the Screw 1/4-20 x 5/16 in (part# 02011) or get help?

You can add the Screw 1/4-20 x 5/16 in (part# 02011) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tacony equipment since 1956 and can help confirm the right part for your machine.

Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428.