M12 Shoulder Bolts | McMaster-Carr

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	System of Measurement System of Measurement

Metric

	Shoulder Length Shoulder Length

	Shoulder Diameter Shoulder Diameter

	Thread Size Thread Size	Show

M12

	Thread Size Thread Size	Hide

	Thread Pitch Thread Pitch

1.75 mm

	Material Material

Steel

Stainless Steel

	Thread Length Thread Length

	Head Type Head Type


Socket	Hex

	Head Texture Head Texture


Knurled	Smooth

	Socket Head Profile Socket Head Profile

	Standard

	Drive Style Drive Style


Hex	External Hex

	Head Height Head Height

	Head Diameter Head Diameter

18 mm

24 mm

30 mm

	Tensile Strength Tensile Strength

70,000 psi

120,000 psi

140,000 psi

	Size Size

6 mm

8 mm

10 mm

	Minimum Shear Strength Minimum Shear Strength

	Thread Type Thread Type

Metric

	Thread Direction Thread Direction

	Right Hand

	Shoulder Fit Shoulder Fit

Standard

	Hardness Hardness

	Finish Finish

Black Oxide

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

REACH Compliant

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

RoHS Compliant

RoHS Compliant with
Exemptions

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153 Products

About Shoulder Screws

Comparable to Class 12.9 steel, these alloy steel shoulder screws are the strongest we offer. They have a standard shoulder with an undersized tolerance to fit most machinery and equipment. Also known as stripper bolts, they're commonly used in punch and die assemblies, and as an axle or pivot point.

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

											Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Finish	Tensile Strength, psi	Drive Size, mm	Specifications Met		1-4	5-Up
16 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
10	M12	1.75	18	24	11	Black Oxide	140,000	8	ASTM A108	000000000	000000	00000
12	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
14	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	00000	00000
16	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
20	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
25	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
30	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
35	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
40	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
45	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
50	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
55	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
60	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
70	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
80	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	0000	0000
90	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	00000	0000
100	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	00000	0000
120	M12	1.75	18	24	11	Black Oxide	140,000	8	ISO 7379	000000000	00000	00000

Short-Thread Alloy Steel Shoulder Screws

Use these screws in thin materials; they have a shorter threaded portion than our standard shoulder screws. They’re comparable in strength to Grade 8 steel. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. Also known as stripper bolts, they're commonly used in punch and die assemblies, and as an axle or pivot point.

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

Metric

										Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Finish	Tensile Strength, psi	Drive Size, mm		1-4	5-Up
16 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
8	M12	1.75	12	24	11	Black Oxide	140,000	8	000000000	000000	000000
10	M12	1.75	12	24	11	Black Oxide	140,000	8	000000000	00000	00000
12	M12	1.75	12	24	11	Black Oxide	140,000	8	000000000	00000	00000
16	M12	1.75	12	24	11	Black Oxide	140,000	8	000000000	00000	00000
20	M12	1.75	12	24	11	Black Oxide	140,000	8	000000000	00000	00000
25	M12	1.75	12	24	11	Black Oxide	140,000	8	000000000	00000	00000
30	M12	1.75	12	24	11	Black Oxide	140,000	8	000000000	00000	00000
40	M12	1.75	12	24	11	Black Oxide	140,000	8	000000000	00000	00000
50	M12	1.75	12	24	11	Black Oxide	140,000	8	000000000	00000	00000

Metric Same-Size Thread Alloy Steel Shoulder Screws

With threads the same diameter as the shoulder, these screws can handle heavy loads. Made of alloy steel, they are comparable in strength to Class 12.9 steel. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. Also known as stripper bolts, they're commonly used in punch and die assemblies, and as an axle or pivot point.

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

										Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Finish	Tensile Strength, psi	Drive Size, mm		1-4	5-Up
12 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
6	M12	1.75	16	18	9	Black Oxide	140,000	6	000000000	00000	00000
8	M12	1.75	16	18	9	Black Oxide	140,000	6	000000000	0000	0000
10	M12	1.75	16	18	9	Black Oxide	140,000	6	000000000	0000	0000
12	M12	1.75	16	18	9	Black Oxide	140,000	6	000000000	0000	0000
16	M12	1.75	16	18	9	Black Oxide	140,000	6	000000000	0000	0000
20	M12	1.75	16	18	9	Black Oxide	140,000	6	000000000	0000	0000
25	M12	1.75	16	18	9	Black Oxide	140,000	6	000000000	00000	0000
30	M12	1.75	16	18	9	Black Oxide	140,000	6	000000000	00000	0000

Metric 18-8 Stainless Steel Shoulder Screws

Made from 18-8 stainless steel, these shoulder screws have good chemical resistance and may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.

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

Shoulder Screws

										Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm	Specifications Met		1-4	5-Up
16 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
10	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	000000	000000
12	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
14	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
16	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
20	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
25	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
30	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
35	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
40	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
45	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
50	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
55	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
60	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
80	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
100	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
140	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
150	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
20 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
14	M12	1.75	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
20	M12	1.75	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
25	M12	1.75	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
30	M12	1.75	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
40	M12	1.75	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
50	M12	1.75	22	30	14	70,000	10	ISO 7379	000000000	00000	00000

Made-to-Order Shoulder Screws

For made-to-order shoulder screws, please specify the shoulder length in 0.25 mm increments.

									Each
Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm	Choose a Shoulder Lg., mm		1-4	5-9	10-Up
12 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
M12	1.75	16	18	9	70,000	6	6-49.75	000000000	000000	000000	00000
M12	1.75	16	18	9	70,000	6	50-99.75	000000000	00000	00000	00000
16 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
M12	1.75	18	24	11	70,000	8	6-49.75	000000000	00000	00000	00000
M12	1.75	18	24	11	70,000	8	50-99.75	000000000	00000	00000	00000
20 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
M12	1.75	22	30	14	70,000	10	13-49.75	000000000	00000	00000	00000
M12	1.75	22	30	14	70,000	10	50-99.75	000000000	00000	00000	00000

Same-Size Thread 18-8 Stainless Steel Shoulder Screws

Uncoated

Black Oxide

With threads the same diameter as the shoulder, these screws can handle heavy loads. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.

Black-oxide stainless steel screws have a matte-black finish.

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

Metric

								Uncoated			Black Oxide
									Each			Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm		1-4	5-Up		1-4	5-Up
12 mm Shoulder Dia.—Standard Fit (-0.04 to -0.01 mm Dia. Tolerance)
6	M12	1.75	18	18	9	70,000	6	000000	00	00	000000000	00000	00000
8	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000	00	00
10	M12	1.75	18	18	9	70,000	6	000000000	0000	0000	000000	00	00
12	M12	1.75	18	18	9	70,000	6	000000000	00000	0000	000000	00	00
16	M12	1.75	18	18	9	70,000	6	000000000	00000	0000	000000000	00000	00000
20	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000000	00000	00000
25	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000	00	00
30	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000000	00000	00000
35	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000000	00000	00000
40	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000000	00000	00000
45	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000000	00000	00000
50	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000	00	00
60	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000000	00000	00000
80	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000	00	00
90	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000	00	00
120	M12	1.75	18	18	9	70,000	6	000000000	00000	00000	000000	00	00

Metric 316 Stainless Steel Shoulder Screws

More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water. They may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.

Black-oxide stainless steel screws have a matte black finish.

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

Shoulder Screws

										Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm	Specifications Met		1-4	5-Up
16 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
10	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	000000	000000
12	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
14	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
16	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
20	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
22	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
25	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
30	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
35	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
40	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
45	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
50	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
55	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
60	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
70	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
140	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
160	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
190	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
20 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
14	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
20	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
25	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
30	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
40	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
50	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000

Shoulder Screws with a Black-Oxide Finish

										Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm	Specifications Met		1-4	5-Up
16 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
10	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	000000	000000
12	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
14	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
16	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
20	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
22	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
25	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
30	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
35	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
40	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
45	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
50	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
55	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
60	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
70	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
80	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
90	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
100	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
110	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
120	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
130	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
140	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
150	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
160	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
170	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
180	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
190	M12	1.75	18	24	11	70,000	8	ISO 7379	000000000	00000	00000
20 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
14	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
20	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
25	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
30	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
40	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000
50	M12	1.75	22	30	14	70,000	10	__	000000000	00000	00000

Metric Steel Hex Head Shoulder Screws

Also known as wheel and axle bolts, these metric screws have an unthreaded shoulder that acts as a shaft, so material attached to the threaded end can rotate. Made of steel, they are strong enough to withstand pulling and stretching without breaking. They are often used with bearings, pulleys, valves, and pumps. The hex head lets you tighten these screws with a wrench, and keeps them in place once they are installed. All of these screws meet DIN 609, which is an international standard for shoulder screw dimensions.

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

									Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Wd., mm	Head Ht., mm	Tensile Strength, psi	Specifications Met		1-4	5-Up
13 mm Shoulder Dia.—Standard Fit (0.001 mm to 0.012 mm Dia. Tolerance)
11.5	M12	1.75	20.5	19	8	120,000	DIN 609	000000000	00000	00000
16.5	M12	1.75	20.5	19	8	120,000	DIN 609	000000000	0000	0000
21.5	M12	1.75	20.5	19	8	120,000	DIN 609	000000000	0000	0000
26.5	M12	1.75	22.5	19	8	120,000	DIN 609	000000000	0000	0000
29.5	M12	1.75	22.5	19	8	120,000	DIN 609	000000000	0000	0000
34.5	M12	1.75	22.5	19	8	120,000	DIN 609	000000000	0000	0000
44.5	M12	1.75	22.5	19	8	120,000	DIN 609	000000000	0000	0000
54.5	M12	1.75	22.5	19	8	120,000	DIN 609	000000000	0000	0000
74.5	M12	1.75	22.5	19	8	120,000	DIN 609	000000000	0000	0000

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About Shoulder Screws

Metric Alloy Steel Shoulder Screws

Short-Thread Alloy Steel Shoulder Screws

Metric Same-Size Thread Alloy Steel Shoulder Screws

Metric 18-8 Stainless Steel Shoulder Screws

Same-Size Thread 18-8 Stainless Steel Shoulder Screws

Metric 316 Stainless Steel Shoulder Screws

Metric Steel Hex Head Shoulder Screws