Hand Tools, Hardware & Consumer Products · Application
Grip knurling on knobs, handles and thumb screws
Straight and diamond knurls give a secure, comfortable grip on control knobs, tool handles, adjusters and hand-tightened screws.
- What was needed
- Male Diamond Form Knurling Wheel, Straight Form Knurling Wheel, Left-Hand Cut Knurling Wheel, Right-Hand Cut Knurling Wheel, Rotating Head Double Cut Knurling Tool Holder
- Requirements
- Secure grip with oily or gloved hands
- Even, attractive pattern
- Knurled in the turning set-up
- Industries
- Hand Tools, Hardware & Consumer ProductsAutomotive & Auto ComponentsMedical Devices & Lab AutomationAerospace & DefenceFasteners & Cold Forging
- Result
- A consistent grip pattern produced in the same operation as turning.
Products used
RapidMale Diamond Form Knurling WheelGEDiamond grip, points raised (GE)View product
RapidStraight Form Knurling WheelAAStraight grip for turned-only parts (AA)View product
RapidLeft-Hand Cut Knurling WheelC-BLWith the right-hand wheel for a cut diamond patternView product
RapidRight-Hand Cut Knurling WheelC-BRWith the left-hand wheel for a cut diamond patternView product
RapidRotating Head Double Cut Knurling Tool HolderC210Holds both cut wheelsView product
Problem
Parts that are turned or held by hand (instrument and control knobs, adjuster screws, tool handles, bit holders, thumb screws and knurled nuts) need a grip that works with oily or gloved hands, looks consistent and doesn't wear smooth. The pattern often also identifies the part as a quality product.
Solution
A diamond knurl (form profiles GE/GV, or cut BL + BR together) gives grip in every direction; a straight knurl (AA) is preferred where the part is only turned.
- Form knurling suits most steels and brass and leaves no chips; it raises the diameter slightly.
- Cut knurling produces a sharper, cleaner pattern with little diameter change and lower forces; good for thin-walled or small parts and for decorative finishes.
- Coarser pitches give a stronger grip; finer pitches a softer feel and better look on small parts.
Benefits
Why it works
Secure grip
Works with oily hands and gloves.
Consistent appearance
A sharp, even pattern that reads as a quality product.
One operation on the lathe
Knurled in the same set-up as turning.
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