Lever handle HS10 smooth hole black

HS10 with a plain hole is the neatest lever handle series in the range, meant to be pressed onto a plain or lightly knurled stud. The hole is unthreaded and the handle sits by press fit; an assembly that is quick in production and gives a clean lever without visible fasteners.

The series covers nine sizes that you pick as a variant on the product page. The length spans from 39 to 84 mm, the hole diameter from 8 to 16 mm and the largest diameter of the grip from 16 to 25 mm. The smallest designs suit controls on instruments and small machines; the larger ones sit comfortably in the hand on control levers where the whole grip is used.

The material is PA6, nylon 6. It is a tough and impact resistant engineering plastic that stands up to oils, greases and normal lubricants in a workshop, and it never rusts. The natural spring in the nylon also makes the press fit forgiving; the hole gives way a little during assembly and then squeezes the stud with even pressure.

The surface is glossy black as standard. The manufacturer also makes the series with a matte surface, and the material is available in TPE on request for applications that call for a softer grip.

Compared with the other mountings in the family, the plain hole is the fastest option in assembly, but it takes for granted that you turn or buy the stud yourself. If the lever already has a threaded end, HS10 with a threaded stud or a bushing is a more convenient choice; they are separate products in the same family. The advantage of a plastic handle over metal holds whatever the mounting: lower weight, no corrosion and a grip that does not carry cold from the machine to the hand.

Typical places for HS10 are feed levers on lathes and pillar drills, gear levers on smaller machines, controls in packaging machines, levers on farm implements and controls in fixture and jig building. Another common role is the replacement lever: when the original handle on an older machine has cracked, a plain hole is easy to match, only the diameter has to be right. In short, everywhere a hand has to guide a movement many times a day.

For mounting, normal press fit practice applies. The stud should be just over the hole dimension and preferably lightly grooved or knurled for a better grip. A proven workshop trick is to warm the handle in hot water before pressing; the plastic becomes more willing and then grips as it cools. If you want extra security, adhesive intended for nylon works too.

The hole does not go all the way through; it ends just before the top of the grip, so the lever gets a closed and neat end without a plug. The hole depth varies with the size and is given in the dimension sheet for each version.

The handles are volume items. The standard pack from the manufacturer holds 250 pieces; the smallest size is packed in 1000. For machine builders assembling in series that means even quality and the same shade across the whole batch.

The size choice is rarely harder than measuring the stud and feeling it in your hand. Controls that are only touched with two fingers manage with the shortest grips, while levers that are pulled with force do best with a length of 70 or 84 mm. If you are between two sizes the larger one is usually the more comfortable choice; a grip that fills the hand tires less than one that is squeezed between fingertips.

Do you want help choosing the right size for your stud? Get in touch, and we will look at the dimension drawing together.