M20 Set Screws | McMaster-Carr

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	System of Measurement System of Measurement

Metric

	Thread Size Thread Size	Show

M20

	Thread Size Thread Size	Hide

	Thread Pitch Thread Pitch

1.5 mm

2.5 mm

	Length Length

	Size Size

10 mm

	Head Type Head Type


Headless	Square

	Tip Type Tip Type


Cup	Flat

Extended	Ball

	Material Material

Steel

Stainless Steel

	Drive Style Drive Style


Hex	External Square

	Specifications Met Specifications Met

DIN

ISO

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Thread Spacing Thread Spacing

Coarse

Extra Fine

	Thread Type Thread Type

Metric

	Thread Direction Thread Direction

	Right Hand

	Thread Fit Thread Fit

Class 5g6g

Class 6g

	Hardness Hardness

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

REACH Compliant

	Tip Diameter Tip Diameter

15 mm

	Tip Length Tip Length

5.3 mm

10.36 mm

	Head Width Head Width

22 mm

	Head Height Head Height

20 mm

	Tip Material Tip Material

Steel

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

DFARS Specialty Metals
Compliant

DFARS Specialty Metals
COTS-Exempt

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About Set Screws

These alloy steel set screws have a thin edge that digs into hard surfaces for a secure hold. Length listed is the overall length.

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

Alloy Steel
Lg., mm	Drive Size, mm	Hardness	Specifications Met	Pkg. Qty.		Pkg.
M20 × 1.5 mm
20	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	000000
25	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
30	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
35	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
40	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
50	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
60	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
M20 × 2.5 mm
20	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	0000
25	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	0000
30	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	0000
35	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	0000
40	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	0000
45	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
50	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	0000
55	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
60	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	0000
70	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
80	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
90	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
100	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
120	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
200	10	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000

Metric 18-8 Stainless Steel Cup-Point Set Screws

18-8 stainless steel set screws are chemical resistant and may be mildly magnetic. They have a thin edge that digs into the contact surface for a secure hold. Length listed is the overall length.

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

18-8 Stainless Steel
Lg., mm	Drive Size, mm	Hardness	Specifications Met	Pkg. Qty.		Pkg.
M20 × 2.5 mm
20	10 mm	Not Rated	DIN 916, ISO 4029	1	000000000	00000
25	10 mm	Not Rated	DIN 916, ISO 4029	1	000000000	0000
30	10 mm	Not Rated	DIN 916, ISO 4029	1	000000000	0000
40	10 mm	Not Rated	DIN 916, ISO 4029	1	000000000	00000
50	10 mm	Not Rated	DIN 916, ISO 4029	1	000000000	00000

Metric 18-8 Stainless Steel Flat-Tip Set Screws

18-8 stainless steel set screws are chemical resistant and may be mildly magnetic. The tip makes good contact on flat surfaces and allows you to make frequent adjustments with minimal surface damage. Length listed is the overall length.

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

18-8 Stainless Steel
Lg., mm	Drive Size, mm	Hardness	Specifications Met	Pkg. Qty.		Pkg.
M20 × 2.5 mm
20	10 mm	Not Rated	DIN 913, ISO 4026	1	000000000	00000
25	10 mm	Not Rated	DIN 913, ISO 4026	1	000000000	0000
30	10 mm	Not Rated	DIN 913, ISO 4026	1	000000000	0000
50	10 mm	Not Rated	DIN 913, ISO 4026	1	000000000	00000
70	10 mm	Not Rated	DIN 913, ISO 4026	1	000000000	00000

Metric Alloy Steel Flat-Tip Set Screws

These set screws have a tip that makes good contact on flat surfaces and allows you to make frequent adjustments with minimal surface damage. Length listed is the overall length.

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

Alloy Steel
Lg., mm	Drive Size, mm	Hardness	Specifications Met	Pkg. Qty.		Pkg.
M20 × 2.5 mm
20	10	Rockwell C45	DIN 913, ISO 4026	5	000000000	000000
25	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
30	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
35	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
40	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
45	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
50	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
60	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
70	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
80	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
90	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	00000
100	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	0000
130	10	Rockwell C45	DIN 913, ISO 4026	1	000000000	00000

Metric Alloy Steel Extended-Tip Set Screws

Also known as dog-point set screws, these set screws have a protruding tip that locks within a mating hole or slot to keep parts aligned. Length listed is the overall length.

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

	Tip, mm
Lg., mm	Dia.	Lg.	Drive Size	Hardness	Specifications Met	Pkg. Qty.		Pkg.
Alloy Steel
M20 × 2.5 mm
20	15	5.3	10	Rockwell C45	DIN 915, ISO 4028	5	000000000	000000
25	15	5.3	10	Rockwell C45	DIN 915, ISO 4028	5	000000000	00000
30	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
35	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
40	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
45	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
50	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
55	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
60	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
70	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
80	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
90	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	0000
100	15	10.36	10	Rockwell C45	DIN 915, ISO 4028	1	000000000	00000

Metric Square-Head Extended-Tip Set Screws

A square head allows you to turn these screws by hand, or use a wrench when you need more torque. Also known as half dog-point set screws, they have a protruding tip that locks within a mating hole or slot to keep parts aligned. 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	Dia.	Lg.	Wd.	Ht.	Hardness	Specifications Met	Pkg. Qty.		Pkg.
Alloy Steel
M20 × 2.5 mm
60	15	5.3	22	20	Rockwell C23	DIN 479	1	000000000	000000
70	15	5.3	22	20	Rockwell C23	DIN 479	1	000000000	00000
80	15	5.3	22	20	Rockwell C23	DIN 479	1	000000000	00000
100	15	5.3	22	20	Rockwell C23	DIN 479	1	000000000	00000

Metric Alloy Steel Ball-Point Set Screws

These set screws have a rolling ball that swivels 360° to minimize surface damage and allow for slight adjustments without loosening the screw. Length listed is the overall length.

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

Alloy Steel
Lg., mm	Tip Dia., mm	Drive Size, mm	Hardness		Each
M20 × 2.5 mm
44.2	15	10	Rockwell C39	000000000	000000
64.2	15	10	Rockwell C39	000000000	00000

Long Hex-Nose Spring Plungers

With Thread Locker

Without Thread Locker

Fasten from the nose end with a wrench for more torque than slotted long-nose spring plungers. These spring plungers have a nose that is longer than ball-nose spring plungers to provide a large bearing surface and handle side loads. Made from wear-resistant steel, the body has a black-oxide finish to resist corrosion in dry environments.

Spring plungers without thread locker are for use in soft material such as aluminum, in extreme temperatures, and on parts requiring frequent assembly and removal.

Spring plungers with thread locker have a nylon locking pellet that adds friction to resist loosening.

Extended nose force is the force required to begin to depress the nose. Compressed nose force is the force required to depress the nose flush with the body. When using a plunger as a detent or stop, a lighter nose force with a shallower hole releases more easily, while a heavier force with a deeper hole holds more securely.

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

Metric

Thread			Nose		Nose Force, lbs.
Size	Pitch, mm	Body Lg., mm	Extended Lg., mm	Wd., mm	Extended	Compressed	Choose a Locking Type		Each
Black-Oxide Steel Body and Steel Nose
M20	2.5	44.5	8	9.5	6.7	37.3	Thread Locker, Without Thread Locker	0000000	000000

Extra-Long Hex-Nose Spring Plungers

These spring plungers have a nose that is about three-times longer than standard long hex-nose spring plungers. The extra-long nose provides a large bearing surface to handle side loads. Install from the nose end with a wrench for more torque than slotted long-nose spring plungers. They're made from wear-resistant steel. A nylon locking pellet adds friction to resist loosening.

Black-oxide steel bodies resist corrosion in dry environments.

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

Metric

Thread			Nose		Nose Force, lbs.		Thread Locker
Size	Pitch, mm	Body Lg., mm	Extended Lg., mm	Wd., mm	Extended	Compressed	Type	Temp. Range, °F		Each
Black-Oxide Steel Body and Steel Nose
M20	2.5	95.3	25.4	9.5	4	35	Nylon Pellet	-50° to 180°	00000000	000000

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About Set Screws

Metric Alloy Steel Cup-Point Set Screws

Metric 18-8 Stainless Steel Cup-Point Set Screws

Metric 18-8 Stainless Steel Flat-Tip Set Screws

Metric Alloy Steel Flat-Tip Set Screws

Metric Alloy Steel Extended-Tip Set Screws

Metric Square-Head Extended-Tip Set Screws

Metric Alloy Steel Ball-Point Set Screws

Long Hex-Nose Spring Plungers

Extra-Long Hex-Nose Spring Plungers