Inch Thumb Screws

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Inch Thumb Screws

Thumbscrews are hand-operated fasteners designed for quick and easy tightening or loosening without the need for tools. They feature a ridged or winged head that provides excellent grip, allowing users to adjust or secure components by hand.

Thumbscrews are commonly used where frequent adjustments, assembly, or maintenance are required—such as in machinery panels, enclosures, jigs, fixtures, and electronic equipment. Their tool-free design makes them ideal for applications prioritising convenience, accessibility, and repeatable use.

Available in a variety of materials and finishes.

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	Colour Cap	Component Material	D	D1	D3	D4	H	H1	H2	K	L	Male/Female	Material	T	Price (Exc. Tax)	Stock
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K0247.02A3 View product	Black	Stainless Steel	5/16-18	26	18	23	--	26	9.5	--	--	Female	--	14	£2.35	0
K0247.01A17X20 View product	Yellow	Stainless Steel	10-32	21	14	19	--	22	8	--	20	Male	--	--	£2.13	0
K0247.01A17 View product	Yellow	Stainless Steel	10-32	21	14	19	--	22	8	--	--	Female	--	10	£1.90	0
K0247.01A16 View product	Red	Stainless Steel	10-32	21	14	19	--	22	8	--	--	Female	--	10	£1.90	0
K0247.01A15X20 View product	Grey	Stainless Steel	10-32	21	14	19	--	22	8	--	20	Male	--	--	£2.13	0
K0140.A3X16 View product	--	--	5/16-18	30	16	--	18	--	--	6	16	--	Free-cutting Steel	--	£5.58	0
K0140.AEX16 View product	--	--	8-32	16	8	--	9.5	--	--	3.5	16	--	Free-cutting Steel	--	£2.65	0
K0140.AEX10 View product	--	--	8-32	16	8	--	9.5	--	--	3.5	10	--	Free-cutting Steel	--	£2.29	0
K0140.AE2X20 View product	--	--	8-32	16	8	--	9.5	--	--	3.5	20	--	Stainless Steel	--	£3.61	0
K0140.A2X25 View product	--	--	1/4-20	24	12	--	15	--	--	5	25	--	Free-cutting Steel	--	£4.76	0
K0140.A2X16 View product	--	--	1/4-20	24	12	--	15	--	--	5	16	--	Free-cutting Steel	--	£4.02	0
K0140.A4X20 View product	--	--	3/8-16	36	20	--	23	--	--	8	20	--	Free-cutting Steel	--	£8.60	0
K0140.A42X25 View product	--	--	3/8-16	36	20	--	23	--	--	8	25	--	Stainless Steel	--	£11.31	0
K0140.A1X20 View product	--	--	10-32	20	10	--	11.5	--	--	4	20	--	Free-cutting Steel	--	£3.34	0
K0140.A1X10 View product	--	--	10-32	20	10	--	11.5	--	--	4	10	--	Free-cutting Steel	--	£2.86	0
K0140.A12X20 View product	--	--	10-32	20	10	--	11.5	--	--	4	20	--	Stainless Steel	--	£4.06	0
K0140.A0X20 View product	--	--	10-24	20	10	--	11.5	--	--	4	20	--	Free-cutting Steel	--	£3.34	0
K0140.A0X16 View product	--	--	10-24	20	10	--	11.5	--	--	4	16	--	Free-cutting Steel	--	£3.02	0
K0140.A0X10 View product	--	--	10-24	20	10	--	11.5	--	--	4	10	--	Free-cutting Steel	--	£2.86	0
K0140.A02X20 View product	--	--	10-24	20	10	--	11.5	--	--	4	20	--	Stainless Steel	--	£4.06	0
K0140.A02X16 View product	--	--	10-24	20	10	--	11.5	--	--	4	16	--	Stainless Steel	--	£3.70	0
K0137.1A52 View product	--	--	1/2-13	40	32	34	24	--	--	16	--	--	Stainless Steel	14	£11.69	0
K0137.1A4 View product	--	--	3/8-16	36	28	30	20	--	--	14	--	--	Free-cutting Steel	8	£7.32	0
K0137.1A0 View product	--	--	10-24	20	14	15	12	--	--	8	--	--	Free-cutting Steel	5	£3.00	0

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Item Code: K0247.02A3

Knurled Knob Stainless Steel Thread. 5/16"-18 Thread. Black Cap.

£2.35 Excl VAT £2.82 Inc VAT

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Item Code: K0247.01A17X20

Knurled Knob Stainless Steel Thread. 10-32"x20 Thread. Yellow Cap.

£2.13 Excl VAT £2.56 Inc VAT

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Item Code: K0247.01A17

Knurled Knob Stainless Steel Thread. 10-32" Thread. Yellow Cap.

£1.90 Excl VAT £2.28 Inc VAT

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Item Code: K0247.01A16

Knurled Knob Stainless Steel Thread. 10-32" Thread. Red Cap.

£1.90 Excl VAT £2.28 Inc VAT

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Item Code: K0247.01A15X20

Knurled Knob Stainless Steel Thread. 10-32"x20 Thread. Grey Cap.

£2.13 Excl VAT £2.56 Inc VAT

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Item Code: K0140.A3X16

Knurled Thumbscrew. Free-cutting Steel. 5/16"-18x16mm Thread. 30mm Grip Diameter.

£5.58 Excl VAT £6.70 Inc VAT

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Item Code: K0140.AEX16

Knurled Thumbscrew. Free-cutting Steel. 8-32"x16mm Thread. 16mm Grip Diameter.

£2.65 Excl VAT £3.18 Inc VAT

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Item Code: K0140.AEX10

Knurled Thumbscrew. Free-cutting Steel. 8-32"x10mm Thread. 16mm Grip Diameter.

£2.29 Excl VAT £2.75 Inc VAT

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Item Code: K0140.AE2X20

Knurled Thumbscrew. Stainless Steel. 8-32"x20mm Thread. 16mm Grip Diameter.

£3.61 Excl VAT £4.33 Inc VAT

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Item Code: K0140.A2X25

Knurled Thumbscrew. Free-cutting Steel. 1/4"-20x25mm Thread. 24mm Grip Diameter.

£4.76 Excl VAT £5.71 Inc VAT

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Item Code: K0140.A2X16

Knurled Thumbscrew. Free-cutting Steel. 1/4"-20x16mm Thread. 24mm Grip Diameter.

£4.02 Excl VAT £4.82 Inc VAT

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Item Code: K0140.A4X20

Knurled Thumbscrew. Free-cutting Steel. 3/8"-16x20mm Thread. 36mm Grip Diameter.

£8.60 Excl VAT £10.32 Inc VAT

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Item Code: K0140.A42X25

Knurled Thumbscrew. Stainless Steel. 3/8"-16x25mm Thread. 36mm Grip Diameter.

£11.31 Excl VAT £13.57 Inc VAT

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Item Code: K0140.A1X20

Knurled Thumbscrew. Free-cutting Steel. 10-32"x20mm Thread. 20mm Grip Diameter.

£3.34 Excl VAT £4.01 Inc VAT

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Item Code: K0140.A1X10

Knurled Thumbscrew. Free-cutting Steel. 10-32"x10mm Thread. 20mm Grip Diameter.

£2.86 Excl VAT £3.43 Inc VAT

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Item Code: K0140.A12X20

Knurled Thumbscrew. Stainless Steel. 10-32"x20mm Thread. 20mm Grip Diameter.

£4.06 Excl VAT £4.87 Inc VAT

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Item Code: K0140.A0X20

Knurled Thumbscrew. Free-cutting Steel. 10-24"x20mm Thread. 20mm Grip Diameter.

£3.34 Excl VAT £4.01 Inc VAT

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Item Code: K0140.A0X16

Knurled Thumbscrew. Free-cutting Steel. 10-24"x16mm Thread. 20mm Grip Diameter.

£3.02 Excl VAT £3.62 Inc VAT

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Item Code: K0140.A0X10

Knurled Thumbscrew. Free-cutting Steel. 10-24"x10mm Thread. 20mm Grip Diameter.

£2.86 Excl VAT £3.43 Inc VAT

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Dispatch by 13/05/26

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Item Code: K0140.A02X20

Knurled Thumbscrew. Stainless Steel. 10-24"x20mm Thread. 20mm Grip Diameter.

£4.06 Excl VAT £4.87 Inc VAT

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Dispatch by 13/05/26

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Item Code: K0140.A02X16

Knurled Thumbscrew. Stainless Steel. 10-24"x16mm Thread. 20mm Grip Diameter.

£3.70 Excl VAT £4.44 Inc VAT

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Item Code: K0137.1A52

Knurled Nut. Stainless Steel. 1/2"-13 Thread. 40mm Grip Diameter.

£11.69 Excl VAT £14.03 Inc VAT

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Item Code: K0137.1A4

Knurled Nut. Free-cutting Steel. 3/8"-16 Thread. 36mm Grip Diameter.

£7.32 Excl VAT £8.78 Inc VAT

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Item Code: K0137.1A0

Knurled Nut. Free-cutting Steel. 10-24" Thread. 20mm Grip Diameter.

£3.00 Excl VAT £3.60 Inc VAT

Dispatch by 13/05/26

Item Code: K0137.1A0

£3.00 Excl VAT £3.60 Inc VAT

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Category Image Schema

Inch Thumb Screws

K0137 Inch - Knurled Nuts In Steel & Stainless Steel (12)

K0140 Inch - Thumbscrews In Steel & Stainless Steel (36)

K0247 Inch - Knurled Knobs Parts In Steel And Stainless Steel (112)

K0250 Inch - Mushroom Knobs In Stainless Steel (8)

K0251 Inch - Mushroom Knobs Plastic Parts In Steel And Stainless Steel (96)

£2.35

£2.13

£1.90

£1.90

£2.13

£5.58

£2.65

£2.29

£3.61

£4.76

£4.02

£8.60

£11.31

£3.34

£2.86

£4.06

£3.34

£3.02

£2.86

£4.06

£3.70

£11.69

£7.32

£3.00

Knurled Knob Stainless Steel Thread. 5/16"-18 Thread. Black Cap.

Knurled Knob Stainless Steel Thread. 10-32"x20 Thread. Yellow Cap.

Knurled Knob Stainless Steel Thread. 10-32" Thread. Yellow Cap.

Knurled Knob Stainless Steel Thread. 10-32" Thread. Red Cap.

Knurled Knob Stainless Steel Thread. 10-32"x20 Thread. Grey Cap.

Knurled Thumbscrew. Free-cutting Steel. 5/16"-18x16mm Thread. 30mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 8-32"x16mm Thread. 16mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 8-32"x10mm Thread. 16mm Grip Diameter.

Knurled Thumbscrew. Stainless Steel. 8-32"x20mm Thread. 16mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 1/4"-20x25mm Thread. 24mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 1/4"-20x16mm Thread. 24mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 3/8"-16x20mm Thread. 36mm Grip Diameter.

Knurled Thumbscrew. Stainless Steel. 3/8"-16x25mm Thread. 36mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 10-32"x20mm Thread. 20mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 10-32"x10mm Thread. 20mm Grip Diameter.

Knurled Thumbscrew. Stainless Steel. 10-32"x20mm Thread. 20mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 10-24"x20mm Thread. 20mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 10-24"x16mm Thread. 20mm Grip Diameter.

Knurled Thumbscrew. Free-cutting Steel. 10-24"x10mm Thread. 20mm Grip Diameter.

Knurled Thumbscrew. Stainless Steel. 10-24"x20mm Thread. 20mm Grip Diameter.

Knurled Thumbscrew. Stainless Steel. 10-24"x16mm Thread. 20mm Grip Diameter.

Knurled Nut. Stainless Steel. 1/2"-13 Thread. 40mm Grip Diameter.

Knurled Nut. Free-cutting Steel. 3/8"-16 Thread. 36mm Grip Diameter.

Knurled Nut. Free-cutting Steel. 10-24" Thread. 20mm Grip Diameter.