Tornado Screw Socket Head Cap 1/2-13 x 1″ Stainless 05441

A socket head cap screw is driven by a hex key in a recess rather than by a spanner on a hexagon. That choice is made where there is no room to swing a wrench, or where the head has to sit in a counterbore. Part number 05441 is the genuine OEM 1/2-13 x 1 inch stainless socket head cap screw. It also fits the Tornado 98166 20″ Marathon 800 carpet extractor (8 Gallon, 115V). It also fits the Tornado 98167 20″ Marathon 800 carpet extractor (8 Gallon, 230V).

Compatible Models for the Screw Socket Head Cap 1/2-13 x 1″ Stainless

This part is shared across a wide run of machines. On the Marathon 1200 family it is fitted to:

• Tornado 98168 12 Gallon Self Contained Carpet Extractor
• Tornado 98168 20″ Marathon 1200 Carpet Extractor (12 Gallon, 115V) — all series
• Tornado 98169 20″ Marathon 1200 Carpet Extractor (12 Gallon, 230V)
• Fits many other machines — call 763-535-0770 and we will confirm fitment for your machine.
• Tornado 98166 20″ Marathon 800 Carpet Extractor (8 Gallon, 115V)
• Tornado 98167 20″ Marathon 800 (8 Gallon, 230V)

At 1/2-13 this is the largest fastener thread in this part of the machine, which means it is carrying real load wherever it is used. That has a practical consequence: a socket head at this size can be torqued very hard with a short key and a long lever, and the head will take far more than the joint needs. Tighten to a firm, considered figure rather than to what the tool allows.

The weakness of a socket head is the recess. Grit packed into the hex, or a key that is slightly worn, rounds the socket out, and a rounded socket on a flush or counterbored head is genuinely awkward to remove because there is nothing standing proud to grip. Clean the recess out before inserting the key, and use a key that is a proper fit rather than the nearest one in the set.

Stainless gives the corrosion resistance this environment needs, with the usual caution: stainless on stainless galls under fast running, so start the screw by hand and let it seat before applying torque. A galled 1/2-13 seized half way in is a bad afternoon.

Inspect a used one before refitting. Look for a rounded recess, for thread crests that have gone dull and slightly flat on the first few turns, and for a stretched section under the head. All three mean it has yielded and will not clamp the same way again.

Fit with clean threads, the specified washer arrangement, and a new lock washer if one is called for.

Browse every assembly for this machine on the Tornado 98168 Marathon 1200 parts hub, and see the manufacturer’s range at tornadovac.com.

Frequently Asked Questions

What machines does the screw 05441 fit?

It is fitted to the Tornado 98168 12 Gallon Self Contained carpet extractor and the 98168 20″ Marathon 1200 in all series, and it is shared across many other machines. Call 763-535-0770 with your model and serial number and we will confirm fitment before you order It also fits the Tornado 98167 Marathon 800 (8 Gallon, 230V).

Why a socket head rather than a hex head?

Because there is no room to swing a spanner, or because the head has to sit down in a counterbore. The trade-off is the recess: grit in the hex or a slightly worn key rounds it out, and a rounded socket on a flush head is awkward to remove because nothing stands proud to grip.

How tight should a 1/2-13 socket screw be?

Firm and considered rather than as hard as the tool allows. A socket head at this size will take far more torque than the joint needs, particularly with a long lever on a short key, and over-tightening stretches the screw so it clamps less rather than more.

How do I order the Screw Socket Head Cap 1/2-13 x 1″ Stainless (part# 05441) or get help?

You can add the Screw Socket Head Cap 1/2-13 x 1″ Stainless (part# 05441) 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 Tornado 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.