M4 Knobs | McMaster-Carr

Clear All

	System of Measurement System of Measurement

Metric

	Thread Size Thread Size	Show

	Thread Size Thread Size	Hide

	Thread Pitch Thread Pitch

0.7 mm

	Material Material

	Head Diameter Head Diameter

	Mount Type Mount Type

Threaded Hole

Threaded Stud

	Grip Style Grip Style

	Length Length

	Stud Length Stud Length

	Round-Head Thumb Screw Profile Round-Head Thumb Screw Profile


Low	Raised

Flared Collar	Narrow

	Hub Diameter Hub Diameter

	Hub Height Hub Height

	Head Height Head Height

	Thumb Screw Head Shape Thumb Screw Head Shape

	Round

	Thread Direction Thread Direction

	Right Hand

	Thread Depth Thread Depth

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Threading Threading

	Fully Threaded
	Partially Threaded

	Color Color

	Black
	Orange

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Maximum Temperature Maximum Temperature

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Hole Shape Hole Shape

	Round

View catalog pages (27)

Forward

How can we improve?

95 Products

About Thumb Screw and Binding Post Materials

Mount these knobs into a threaded hole. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Nylon has good wear resistance.

For technical drawings and 3-D models, click on a part number.

			Head		Hub					Each
Thread Size	Thread Pitch	Stud Lg.	Dia.	Ht.	Dia.	Ht.	Stud Material	Temperature Range, °F		1-9	10-Up
Style 6—Ribbed Grip
Black Nylon Plastic
M4	0.7mm	10mm	16mm	8mm	11mm	5mm	Steel	-20° to 270°	00000000	00000	00000

Threaded-Hole Knobs

Install these knobs on a threaded stud. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance. Nylon has good wear resistance.

For technical drawings and 3-D models, click on a part number.

Thread			Head			Hub					Each
Size	Pitch	Dp.	Dia.	Wd.	Ht.	Dia.	Ht.	Insert Material	Temperature Range, °F		1-9	10-Up
Style 3—Knurled Grip
Black Phenolic Plastic
M4	0.7mm	10mm	19mm	__	13mm	13mm	__	__	-20 to 380°	0000000	00000	00000
Style 9—Ribbed Grip
Black Nylon Plastic
M4	0.7mm	5mm	16mm	__	8mm	11mm	5mm	Brass	-20 to 270°	00000000	0000	0000
Style 16—Two Arm Grip
Black Plastic
M4	0.7mm	10mm	__	35mm	10mm	15.5mm	8mm	Brass	-40 to 230°	00000000	0000	0000

Threaded-Hole Ball Knobs

Install these traditional, easy-to-grip ball knobs on a threaded stud. They're good for control levers and push-pull rods.

Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance.

For technical drawings and 3-D models, click on a part number.

Thread							Each
Size	Pitch	Dp.	Head Dia.	Insert Material	Temperature Range, °F		1-9	10-Up
Style 1
Black Phenolic Plastic
M4	0.7 mm	10mm	17mm	Brass	-20° to 380°	00000000	00000	00000

Adjustable Handles

1 (With Threaded Stud)

1 (With Threaded Hole)

Also known as clamping handles, use these standard adjustable handles for applications involving frequent positioning, tightening, and holding adjustments. Lift the handle to rotate freely; then release the handle to engage and tighten.

For technical drawings and 3-D models, click on a part number.

Style 1—Threaded Stud

1 (With Threaded Stud)

Threaded-stud handles mount into a threaded hole.

Zinc handles have good corrosion resistance.

Stainless steel studs are more corrosion resistant than steel studs.

Thread							Steel Stud		303 Stainless Steel Stud
Size	Pitch, mm	Stud Lg.	Handle Lg.	Projection	Hub Projection	Choose a Color		Each		Each
Powder-Coated Zinc
M4	0.7	15mm	30mm	30mm	25mm	Black, Orange	00000000	000000	00000000	000000
M4	0.7	20mm	30mm	30mm	25mm	Black, Orange	00000000	00000	00000000	00000
M4	0.7	25mm	30mm	30mm	25mm	Black, Orange	00000000	00000	00000000	00000

Style 1—Threaded Hole

1 (With Threaded Hole)

Threaded-hole handles install on a threaded stud.

Zinc handles have good corrosion resistance.

Stainless steel inserts are more corrosion resistant than black-oxide steel inserts.

Thread							Black-Oxide Steel Insert		303 Stainless Steel Insert
Size	Pitch, mm	Dp.	Handle Lg.	Projection	Hub Projection	Choose a Color		Each		Each
Powder-Coated Zinc
M4	0.7	9mm	30mm	30mm	25mm	Black, Orange	00000000	00000	00000000	000000

Safety Adjustable Handles

With Threaded Hole

For technical drawings and 3-D models, click on a part number.

Thread
Size	Pitch, mm	Dp.	Handle Lg.	Projection	Hub Projection	Insert Material	Temp. Range, °F		Each
Threaded Hole
Black Nylon Plastic
M4	0.7	10mm	44mm	36mm	29mm	Black-Oxide Steel	-40° to 250°	00000000	000000

Tapered Lever Handles

3 (Revolving/Folding)

Use these handles as grips on hand wheels and cranks to operate machinery.

Threaded-hole handles install on a threaded stud.

Revolving/folding handles have a grip that turns easily and folds down, so it's out of the way when not in use.

Plastic handles are a lightweight alternative to metal. They all resist oil, grease, and solvents. Nylon has good wear resistance.

For technical drawings and 3-D models, click on a part number.

Style 3—Threaded Hole with Smooth Revolving/Folding Handle

3 (Revolving/Folding)

Thread				Dia.				Each
Size	Pitch, mm	Dp.	Handle Lg.	(A)	(B)	Temp. Range, °F		1-9	10-Up
Black Nylon Plastic
M4	0.7	14mm	50mm	22mm	16mm	Not Rated	0000000	00000	00000
M4	0.7	14mm	63mm	24mm	16mm	Not Rated	0000000	00000	00000

Cam Handles

Use these standard cam handles for most clamping applications. Push down on the handle and the head applies pressure to quickly draw two parts together for fast adjustments. Clamping distance is how far the handle will draw parts together when clamped.

Threaded-hole handles install on a threaded stud.

Threaded-stud handles mount into a threaded hole.

Aluminum handles have mild corrosion resistance, are lightweight, and are nonmagnetic.

For technical drawings and 3-D models, click on a part number.

Threaded Hole

With Threaded Hole

Thread			Handle
Size	Pitch, mm	Clamping Distance	Lg.	Wd.	Center Ht.	Clamped Ht.	Max. Clamping Force, lbs.	Washer Material	Thrust Washer Material		Each
Black Powder-Coated Aluminum
M4	0.7	1.2mm	52mm	13mm	11mm	17mm	550	Steel	Plastic	0000000	000000

Threaded Stud

With Threaded Stud

Thread				Handle
Size	Pitch, mm	Lg.	Clamping Distance	Lg.	Wd.	Center Ht.	Clamped Ht.	Max. Clamping Force, lbs.	Stud Material	Washer Material	Thrust Washer Material		Each
Black Powder-Coated Aluminum
M4	0.7	15mm	1.19mm	52mm	13mm	11mm	17mm	550	Steel	Steel	Plastic	0000000	000000
M4	0.7	20mm	1.19mm	52mm	13mm	11mm	17mm	550	Steel	Steel	Plastic	00000000	00000
M4	0.7	30mm	1.19mm	52mm	13mm	11mm	17mm	550	Steel	Steel	Plastic	00000000	00000

Threaded-Hole Pull Knobs

Thread a screw through a hole from the back of your surface into the knobs to open and close a variety of doors and drawers, including those on furniture, machines, and equipment.

Aluminum knobs have mild corrosion resistance, are lightweight, and are nonmagnetic.

Stainless steel knobs have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.

For technical drawings and 3-D models, click on a part number.

Thread			Head		Hub
Size	Pitch, mm	Dp., mm	Dia., mm	Ht., mm	Dia., mm	Ht., mm	Mounting Fasteners Included		Each
Style 1—Smooth Grip
Anodized Aluminum—Dull
M4	0.7	14.5	20	4	10	14	Yes	00000000	00000
M4	0.7	15	30	5	12	14	Yes	00000000	0000
M4	0.7	15	35	5	13	14	Yes	00000000	0000
M4	0.7	17	25	4.5	11	14	Yes	00000000	0000
Style 2—Smooth Grip
304 Stainless Steel—Dull
M4	0.7	8	20	20	20	13	Yes	00000000	0000
M4	0.7	10	25	20	25	15.5	Yes	00000000	0000
Style 3—Smooth Grip
304 Stainless Steel—Dull
M4	0.7	9	25	25	10	12	Yes	00000000	00000
M4	0.7	19	20	20	12	15	Yes	00000000	0000
Style 4—Smooth Grip
304 Stainless Steel—Dull
M4	0.7	10	30	5	19	19	Yes	00000000	00000
M4	0.7	15	38	11	17	15	Yes	00000000	00000
304 Stainless Steel—Polished
M4	0.7	2	25	11	19	11	Yes	00000000	00000
M4	0.7	2	30	8	20	16	Yes	00000000	00000
Style 5—Ribbed Grip
304 Stainless Steel—Dull
M4	0.7	8	20	33.5	__	__	Yes	00000000	0000
M4	0.7	10	25	35	__	__	Yes	00000000	00000

Threaded-Hole Pull Handles

Thread screws through holes from the back of your surface into the handles to open and close a variety of doors and drawers, including those on furniture, machines, and equipment.

Round grips allow your hand to pivot in any direction.

Stainless steel handles have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.

Aluminum handles have mild corrosion resistance, are lightweight, and are nonmagnetic.

For technical drawings and 3-D models, click on a part number.

				Thread
Mount. Hole Ctr.-to-Ctr. Wd.	Grip Dia.	Projection	Pull Cap., lbs.	Size	Pitch	Dp.	No. of Mount. Holes	Mount. Fasteners Included		Each
Style 1—Round Grip
304 Stainless Steel—Polished
151mm	10mm	29mm	Not Rated	M4	0.7 mm	8mm	2	Yes	0000000	000000
Anodized Aluminum—Dull
64mm	8mm	33mm	Not Rated	M4	0.7 mm	12mm	2	Yes	0000000	0000
96mm	8mm	33mm	Not Rated	M4	0.7 mm	12mm	2	Yes	0000000	0000
128mm	8mm	33mm	Not Rated	M4	0.7 mm	12mm	2	Yes	0000000	0000
160mm	8mm	33mm	Not Rated	M4	0.7 mm	12mm	2	Yes	0000000	0000

Extra-Long Threaded-Hole Pull Handles

For applications that require a large gripping area, these handles have a center-to-center distance of 12" or more. Thread screws through holes from the back of your surface into the handles to open and close a variety of doors and drawers on furniture, machines, and equipment.

Round grips allow your hand to pivot in any direction. Oval grips conform to your hand and offer more control than round grips. Rectangular grips have a flat surface that keeps your hand from slipping.

Stainless steel handles have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.

For technical drawings and 3-D models, click on a part number.

	Grip					Thread
Mount. Hole Ctr.-to-Ctr. Wd.	Dia.	Ht.	Thick.	Projection	Pull Cap., lbs.	Size	Pitch, mm	Dp.	No. of Mount. Holes	Mount. Fasteners Included		Each
Style 3—Round Grip
304 Stainless Steel—Dull
342mm	14mm	__	__	35mm	Not Rated	M4	0.7	10mm	2	Yes	00000000	000000
492mm	14mm	__	__	35mm	Not Rated	M4	0.7	10mm	2	Yes	00000000	00000
592mm	14mm	__	__	35mm	Not Rated	M4	0.7	10mm	2	Yes	00000000	00000
Style 6—Oval Grip
304 Stainless Steel—Dull
320mm	__	14mm	22mm	41mm	Not Rated	M4	0.7	10mm	2	Yes	00000000	00000
Style 7—Rectangular Grip
304 Stainless Steel—Dull
320mm	__	6mm	30mm	40mm	Not Rated	M4	0.7	10mm	2	Yes	00000000	00000

Open-Ended Pull Handles

Finger with Threaded Hole

Access handles from multiple angles to open and close a variety of doors and drawers, including those on furniture, machines, and equipment.

Finger handles are rounded and compact.

Plastic handles resist oil, grease, and solvents.

Install handles with a threaded or unthreaded hole by threading a screw through a hole from the back of your surface into the handles.

For technical drawings and 3-D models, click on a part number.

Thread		Head					Mounting Screw
Size	Dp.	Ht.	Wd.	Max. Temp., °F	No. of Mount. Holes	Mount. Fasteners Included	Lg.		Each
Finger Handle—Threaded Hole
Black Plastic
M4	6mm	26mm	22mm	Not Rated	1	No	6mm	0000000	00000
M4	6mm	30mm	26mm	Not Rated	1	No	6mm	0000000	0000

Threaded-Hole Offset Pull Handles

70° Offset Angle

Thread screws through holes from the back of your surface into the handles to open and close a variety of doors and drawers, including those on furniture, machines, and equipment. The grip is offset from the mounting surface so there's room to fully grasp the handle.

Round grips allow your hand to pivot in any direction.Chrome-plated steel handles have more corrosion resistance than plain or zinc-plated steel handles.

Aluminum handles have mild corrosion resistance, are lightweight, and are nonmagnetic.

Stainless steel handles have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.

For technical drawings and 3-D models, click on a part number.

	Grip			Thread
Mount. Hole Ctr.-to-Ctr. Wd.	Dia.	Projection	Pull Cap., lbs.	Size	Dp.	No. of Mount. Holes	Mount. Fasteners Included		Each
70° Offset Angle—Round Grip
Chrome-Plated Steel—Dull
64mm	8mm	40mm	Not Rated	M4	8mm	2	No	00000000	00000
88mm	8mm	40mm	Not Rated	M4	8mm	2	No	00000000	0000
100mm	8mm	40mm	Not Rated	M4	8mm	2	No	00000000	00000
Anodized Aluminum—Dull
64mm	8mm	40mm	Not Rated	M4	8mm	2	No	00000000	00000
88mm	8mm	40mm	Not Rated	M4	8mm	2	No	00000000	00000
100mm	8mm	40mm	Not Rated	M4	8mm	2	No	00000000	00000
303 Stainless Steel—Dull
64mm	8mm	40mm	Not Rated	M4	8mm	2	No	00000000	0000
88mm	8mm	40mm	Not Rated	M4	8mm	2	No	00000000	00000
100mm	8mm	40mm	Not Rated	M4	8mm	2	No	00000000	00000

Metric Stainless Steel Raised Knurled-Head Thumb Screws

These 18-8 stainless steel thumb screws are chemical resistant and may be mildly magnetic. They have a raised head that makes them easy to grip. The head is knurled for slip-resistant controlled adjustment. Length is measured from under the collar.

For technical drawings and 3-D models, click on a part number.

	Head, mm		Collar, mm
Lg., mm	Dia.	Ht.	Dia.	Ht.	Tensile Strength, psi	Hardness	Specifications Met		Each
18-8 Stainless Steel
M4 × 0.7 mm
5	16	3.5	8	4.5	80,000	Rockwell B83	DIN 464	000000000	00000
8	16	3.5	8	6	80,000	Rockwell B83	DIN 464	000000000	0000
10	16	3.5	8	6	80,000	Rockwell B83	DIN 464	000000000	0000
12	16	3.5	8	6	80,000	Rockwell B83	DIN 464	000000000	0000
16	16	3.5	8	6	80,000	Rockwell B83	DIN 464	000000000	0000
20	16	3.5	8	6	80,000	Rockwell B83	DIN 464	000000000	0000
25	16	3.5	8	6	80,000	Rockwell B83	DIN 464	000000000	0000

Metric Steel Raised Knurled-Head Thumb Screws

These thumb screws have a raised head that makes them easy to grip. The head is knurled for slip-resistant controlled adjustment. A black-oxide finish provides corrosion resistance in dry environments. Length is measured from under the collar.

For technical drawings and 3-D models, click on a part number.

	Head, mm		Collar, mm
Lg., mm	Dia.	Ht.	Dia.	Ht.	Tensile Strength, psi	Hardness	Specifications Met		Each
Black-Oxide Steel
M4 × 0.7 mm
5	16	3.5	8	6	70,000	Rockwell B84	DIN 464	000000000	00000
8	16	3.5	8	6	70,000	Rockwell B84	DIN 464	000000000	0000
10	16	3.5	8	6	70,000	Rockwell B84	DIN 464	000000000	0000
12	16	3.5	8	6	70,000	Rockwell B84	DIN 464	000000000	0000
16	16	3.5	8	6	70,000	Rockwell B84	DIN 464	000000000	0000
20	16	3.5	8	6	70,000	Rockwell B84	DIN 464	000000000	0000
25	16	3.5	8	6	70,000	Rockwell B84	DIN 464	000000000	0000

Metric Stainless Steel Low-Profile Knurled-Head Thumb Screws

Made from 18-8 stainless steel, these thumb screws are chemical resistant and may be mildly magnetic. They have a thin head for use in low-clearance applications. The head is knurled for slip-resistant controlled adjustment. Length is measured from under the head.

For technical drawings and 3-D models, click on a part number.

	Head, mm
Lg., mm	Dia.	Ht.	Tensile Strength, psi	Hardness		Each
18-8 Stainless Steel
M4 × 0.7 mm
9	10	5	90,000	Rockwell B96	000000000	00000
11	10	5	90,000	Rockwell B96	000000000	0000
13	10	5	90,000	Rockwell B96	000000000	0000
14	10	5	90,000	Rockwell B96	000000000	0000
16	10	5	90,000	Rockwell B96	000000000	0000

Metric Steel Low-Profile Knurled-Head Thumb Screws

These thumb screws have a thin head for use in low-clearance applications. The head is knurled for slip-resistant controlled adjustment. They have a black-oxide finish to resist corrosion in dry environments. Length is measured from under the head.

For technical drawings and 3-D models, click on a part number.

	Head, mm
Lg., mm	Dia.	Ht.	Tensile Strength, psi	Hardness	Specifications Met		Each
Black-Oxide Steel
M4 × 0.7 mm
8	16	3.5	70,000	Rockwell B84	DIN 653	000000000	00000
10	16	3.5	70,000	Rockwell B84	DIN 653	000000000	0000
12	16	3.5	70,000	Rockwell B84	DIN 653	000000000	0000
16	16	3.5	70,000	Rockwell B84	DIN 653	000000000	0000
20	16	3.5	70,000	Rockwell B84	DIN 653	000000000	0000

Stainless Steel Flared-Collar Knurled-Head Thumb Screws

Made from 18-8 stainless steel, these thumb screws are chemical resistant and may be mildly magnetic. They have a slightly raised head and a decorative flared collar. The head is knurled for slip-resistant controlled adjustment. Length is measured from under the flange.

For technical drawings and 3-D models, click on a part number.

	Head		Collar
Lg.	Dia.	Ht.	Dia.	Ht.	Tensile Strength, psi	Hardness		Each
18-8 Stainless Steel
M4 × 0.7 mm
8mm	11mm	4mm	9mm	4.5mm	80,000	Rockwell B85	000000000	00000
10mm	11mm	4mm	9mm	4.5mm	80,000	Rockwell B85	000000000	0000
12mm	11mm	4mm	9mm	4.5mm	80,000	Rockwell B85	000000000	0000
16mm	11mm	4mm	9mm	4.5mm	80,000	Rockwell B85	000000000	0000
24mm	11mm	4mm	9mm	4.5mm	80,000	Rockwell B85	000000000	0000
30mm	11mm	4mm	9mm	4.5mm	80,000	Rockwell B85	000000000	0000

Metric Narrow Knurled-Head Thumb Screws

Use these slim thumb screws in tight spaces. Made from 18-8 stainless steel, they're chemical resistant and may be mildly magnetic. The head is knurled for slip-resistant controlled adjustment. Length is measured from under the head.

For technical drawings and 3-D models, click on a part number.

	Head, mm
Lg., mm	Dia.	Ht.	Tensile Strength, psi	Hardness		Each
18-8 Stainless Steel
M4 × 0.7 mm
19	4.8	9.5	80,000	Rockwell B83	000000000	00000
25	4.8	9.5	80,000	Rockwell B83	000000000	0000

Metric Knurled Plastic-Head Thumb Screws

A knurled head allows for slip-resistant controlled adjustment. They have a lightweight and nonconductive plastic head and chemical-resistant 18-8 stainless steel threads. Length is measured from under the head.

For technical drawings and 3-D models, click on a part number.

	Head
Lg., mm	Dia., mm	Ht., mm	Temperature Range, °F	Choose a Head Color	Pkg. Qty.		Pkg.
18-8 Stainless Steel
M4 × 0.7 mm
6	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	00000
8	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
10	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
12	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
16	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
20	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000

Metric Stainless Steel Knurled-Head Extended-Tip Thumb Screws

These 18-8 stainless steel thumb screws are chemical resistant and may be mildly magnetic. Also known as dog- and pilot-point thumb screws, insert the point into a drilled hole or slot to hold items in place. The head is knurled for slip-resistant controlled adjustment. Length is measured from under the head.

For technical drawings and 3-D models, click on a part number.

		Tip, mm		Head, mm
Lg., mm	Thread Lg., mm	Dia.	Lg.	Dia.	Ht.	Tensile Strength, psi	Hardness		Each
18-8 Stainless Steel
M4 × 0.7 mm
32	26	2	3	19	8	80,000	Rockwell B83	000000000	00000
41	35	2	3	19	8	80,000	Rockwell B83	000000000	0000

About Thumb Screw and Binding Post Materials

Threaded-Stud Knobs

Threaded-Hole Knobs

Threaded-Hole Ball Knobs

Adjustable Handles

Safety Adjustable Handles

Tapered Lever Handles

Cam Handles

Threaded-Hole Pull Knobs

Threaded-Hole Pull Handles

Extra-Long Threaded-Hole Pull Handles

Open-Ended Pull Handles

Threaded-Hole Offset Pull Handles

Metric Stainless Steel Raised Knurled-Head Thumb Screws

Metric Steel Raised Knurled-Head Thumb Screws

Metric Stainless Steel Low-Profile Knurled-Head Thumb Screws

Metric Steel Low-Profile Knurled-Head Thumb Screws

Stainless Steel Flared-Collar Knurled-Head Thumb Screws

Metric Narrow Knurled-Head Thumb Screws

Metric Knurled Plastic-Head Thumb Screws

Metric Stainless Steel Knurled-Head Extended-Tip Thumb Screws