Collection: Knobs - Ball - Knock On Phenolic

Knobs (With Images)

Ball

Female Threaded
Knock On Phenolic
Male Threaded

8 Products in this selection

Moulded from black phenolic resin.
Light Weight.
Thermal insulating.
Non corrosive.
POK Type have a ribbed insert. Shaft should be 0 to 0.007 mm undersized for best results
712 Type suit standard metric rod

Additional resources:
Knobs PDF Quick Guide by Thread Size

A more comprehensive listing may be found on the MBA Minibearings main store at Knobs - Ball - Knock On Phenolic.

Thread or Hole Size	Ball Diameter (A)	Thread Length	Colour	Style
4.00 mm Push On	16.00 mm		Black
Material: Phenolic Hole Type: Slightly Oversized
Part Number: KF040-016-KOPH (5 Pcs) Ball Knobs - 4.00 mm Push On 16 mm - - - Phenolic 1 pack (5 pcs) Available Now \| Item Discontinued - Only the quantity available may be ordered - Please contact us if you need a larger quantity Regular price $8.00 AUD Regular price ~~$15.20 AUD~~ Sale price $8.00 AUD Unit price per Per 5
Thread or Hole Size	Ball Diameter (A)	Thread Length	Colour	Indicative Image
4.00 mm Push On	16.00 mm		Black
Material: Phenolic Hole Type: Slightly Oversized
Part Number: KF040-016-KOPH (5 Pcs) Ball Knobs - 4.00 mm Push On 16 mm - - - Phenolic 1 pack (5 pcs) Available Now \| Item Discontinued - Only the quantity available may be ordered - Please contact us if you need a larger quantity Regular price $8.00 AUD Regular price ~~$15.20 AUD~~ Sale price $8.00 AUD Unit price per Per 5
KF040-016-KOPH (5 Pcs) --- Ball Knobs - 4.00 mm Push On 16 mm - - - Phenolic Sale KF040-016-KOPH (5 Pcs) --- Ball Knobs - 4.00 mm Push On 16 mm - - - Phenolic Regular price $8.00 AUD Regular price ~~$15.20 AUD~~ Sale price $8.00 AUD Unit price per 1 Available Now Sale
4.76 mm Push On	19.05 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF048-019-KOPH Ball Knobs - 4.76 mm Push On 19.05 mm - - - Phenolic 8 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $13.41 AUD Regular price Sale price $13.41 AUD Unit price per Each
4.76 mm Push On	19.05 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF048-019-KOPH Ball Knobs - 4.76 mm Push On 19.05 mm - - - Phenolic 8 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $13.41 AUD Regular price Sale price $13.41 AUD Unit price per Each View the product page first if you are unsure.
KF048-019-KOPH --- Ball Knobs - 4.76 mm Push On 19.05 mm - - - Phenolic KF048-019-KOPH --- Ball Knobs - 4.76 mm Push On 19.05 mm - - - Phenolic Regular price $13.41 AUD Regular price Sale price $13.41 AUD Unit price per 8 Available Now
6.35 mm Knock On	31.75 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF064-032-KOPH Ball Knobs - 6.35 mm Knock On 31.75 mm - - - Phenolic 1 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $11.14 AUD Regular price Sale price $11.14 AUD Unit price per Each
6.35 mm Knock On	31.75 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF064-032-KOPH Ball Knobs - 6.35 mm Knock On 31.75 mm - - - Phenolic 1 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $11.14 AUD Regular price Sale price $11.14 AUD Unit price per Each View the product page first if you are unsure.
KF064-032-KOPH --- Ball Knobs - 6.35 mm Knock On 31.75 mm - - - Phenolic KF064-032-KOPH --- Ball Knobs - 6.35 mm Knock On 31.75 mm - - - Phenolic Regular price $11.14 AUD Regular price Sale price $11.14 AUD Unit price per 1 Available Now
7.94 mm Knock On	25.40 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF079-025-KOPH Ball Knobs - 7.94 mm Knock On 25.4 mm - - - Phenolic 2 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $10.77 AUD Regular price Sale price $10.77 AUD Unit price per Each
7.94 mm Knock On	25.40 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF079-025-KOPH Ball Knobs - 7.94 mm Knock On 25.4 mm - - - Phenolic 2 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $10.77 AUD Regular price Sale price $10.77 AUD Unit price per Each View the product page first if you are unsure.
KF079-025-KOPH --- Ball Knobs - 7.94 mm Knock On 25.4 mm - - - Phenolic KF079-025-KOPH --- Ball Knobs - 7.94 mm Knock On 25.4 mm - - - Phenolic Regular price $10.77 AUD Regular price Sale price $10.77 AUD Unit price per 2 Available Now
9.53 mm Knock On	31.75 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF095-032-KOPH Ball Knobs - 9.53 mm Knock On 31.75 mm - - - Phenolic 1 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $12.50 AUD Regular price Sale price $12.50 AUD Unit price per Each
9.53 mm Knock On	31.75 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF095-032-KOPH Ball Knobs - 9.53 mm Knock On 31.75 mm - - - Phenolic 1 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $12.50 AUD Regular price Sale price $12.50 AUD Unit price per Each View the product page first if you are unsure.
KF095-032-KOPH --- Ball Knobs - 9.53 mm Knock On 31.75 mm - - - Phenolic KF095-032-KOPH --- Ball Knobs - 9.53 mm Knock On 31.75 mm - - - Phenolic Regular price $12.50 AUD Regular price Sale price $12.50 AUD Unit price per 1 Available Now
9.53 mm Knock On	38.10 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF095-038-KOPH Ball Knobs - 9.53 mm Knock On 38.1 mm - - - Phenolic 2 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $19.32 AUD Regular price Sale price $19.32 AUD Unit price per Each
9.53 mm Knock On	38.10 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF095-038-KOPH Ball Knobs - 9.53 mm Knock On 38.1 mm - - - Phenolic 2 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $19.32 AUD Regular price Sale price $19.32 AUD Unit price per Each View the product page first if you are unsure.
KF095-038-KOPH --- Ball Knobs - 9.53 mm Knock On 38.1 mm - - - Phenolic KF095-038-KOPH --- Ball Knobs - 9.53 mm Knock On 38.1 mm - - - Phenolic Regular price $19.32 AUD Regular price Sale price $19.32 AUD Unit price per 2 Available Now
15.88 mm Knock On	44.45 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF159-044-KOPH Ball Knobs - 15.88 mm Knock On 44.45 mm - - - Phenolic 1 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $17.23 AUD Regular price Sale price $17.23 AUD Unit price per Each
15.88 mm Knock On	44.45 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF159-044-KOPH Ball Knobs - 15.88 mm Knock On 44.45 mm - - - Phenolic 1 Available Now \| Further orders can be expected around Fri, May 02, 2025 Regular price $17.23 AUD Regular price Sale price $17.23 AUD Unit price per Each View the product page first if you are unsure.
KF159-044-KOPH --- Ball Knobs - 15.88 mm Knock On 44.45 mm - - - Phenolic KF159-044-KOPH --- Ball Knobs - 15.88 mm Knock On 44.45 mm - - - Phenolic Regular price $17.23 AUD Regular price Sale price $17.23 AUD Unit price per 1 Available Now
15.88 mm Knock On	50.80 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF159-051-KOPH Ball Knobs - 15.88 mm Knock On 50.8 mm - - - Phenolic 2 Available Now \| Item Discontinued - Only the quantity available may be ordered - Please contact us if you need a larger quantity Regular price $8.59 AUD Regular price ~~$10.31 AUD~~ Sale price $8.59 AUD Unit price per Each
15.88 mm Knock On	50.80 mm		Black
Material: Phenolic Hole Type: Ribbed Insert
Part Number: KF159-051-KOPH Ball Knobs - 15.88 mm Knock On 50.8 mm - - - Phenolic 2 Available Now \| Item Discontinued - Only the quantity available may be ordered - Please contact us if you need a larger quantity Regular price $8.59 AUD Regular price ~~$10.31 AUD~~ Sale price $8.59 AUD Unit price per Each
KF159-051-KOPH --- Ball Knobs - 15.88 mm Knock On 50.8 mm - - - Phenolic Sale KF159-051-KOPH --- Ball Knobs - 15.88 mm Knock On 50.8 mm - - - Phenolic Regular price $8.59 AUD Regular price ~~$10.31 AUD~~ Sale price $8.59 AUD Unit price per 2 Available Now Sale