16mm Pins | McMaster-Carr

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

REACH Compliant

	For Maximum Cotter Pin Diameter For Maximum Cotter Pin Diameter

4mm

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Head Height Head Height

5mm

7mm

	Through Hole Diameter Through Hole Diameter

4mm

	Tolerance Rating Tolerance Rating

Standard

	Head Diameter Head Diameter

22mm

25mm

	Finish Finish

83 Products

Dowel Pins

Use dowel pins as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts. For a tight fit, your hole should be equal to or slightly smaller than the diameter shown. Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.

Steel pins are the strongest dowel pins. Steel pins are precision ground except for 1/32" diameter pins. Stainless steel pins are more corrosion resistant than steel pins. Pins that are passivated offer added protection against corrosion and oxidation. Stainless steel pins are precision ground except for 1/64" diameter pins. 18-8 stainless steel pins offer a balance of strength and corrosion resistance. They may be mildly magnetic. 316 stainless steel pins have the best corrosion resistance of our stainless steel pins. They may be mildly magnetic. Some pins meet material and dimensional standards set by ASME, Mil. Spec., DIN, or ISO. DIN 6325-m6 is functionally equivalent to ISO 8734, with slight differences in hardness and length tolerances. ISO 2338-m6 is functionally equivalent to DIN 7, but the ends are chamfered instead of rounded.

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

Metric 52100 Alloy Steel

16 mm Dia.
Lg., mm	Dia. Tolerance, mm	Min. Hardness	Breaking Strength, lbs.	Specifications Met	Pkg. Qty.		Pkg.
24	0.007 to 0.018	Rockwell C58	47,000	DIN 6325-m6, ISO 8734	1	000000000	00000
28	0.007 to 0.018	Rockwell C58	47,000	DIN 6325-m6, ISO 8734	1	000000000	0000
30	0.007 to 0.018	Rockwell C52	47,000	DIN 6325-m6, ISO 8734	1	000000000	0000
32	0.007 to 0.018	Rockwell C58	47,000	DIN 6325-m6, ISO 8734	1	000000000	0000
36	0.007 to 0.018	Rockwell C52	Not Rated	DIN 6325-m6, ISO 8734	1	000000000	0000
40	0.007 to 0.018	Rockwell C52	Not Rated	DIN 6325-m6, ISO 8734	1	000000000	0000
45	0.007 to 0.018	Rockwell C52	Not Rated	DIN 6325-m6, ISO 8734	1	000000000	0000
50	0.007 to 0.018	Rockwell C52	Not Rated	DIN 6325-m6, ISO 8734	1	000000000	0000
60	0.007 to 0.018	Rockwell C52	Not Rated	DIN 6325-m6, ISO 8734	1	000000000	0000
70	0.007 to 0.018	Rockwell C52	Not Rated	DIN 6325-m6, ISO 8734	1	000000000	0000
80	0.007 to 0.018	Rockwell C52	Not Rated	DIN 6325-m6, ISO 8734	1	000000000	0000
90	0.007 to 0.018	Rockwell C52	Not Rated	DIN 6325-m6, ISO 8734	1	000000000	0000
100	0.007 to 0.018	Rockwell C52	Not Rated	DIN 6325-m6, ISO 8734	1	000000000	00000

Metric 18-8 Stainless Steel

16 mm Dia.
Lg., mm	Dia. Tolerance, mm	Min. Hardness	Breaking Strength	Passivation	Specifications Met	Pkg. Qty.		Pkg.
20	0 to 0.015	Not Rated	Not Rated	__	ISO 2338-m6	1	000000000	00000
30	0.007 to 0.018	Not Rated	Not Rated	Passivated	ISO 2338-m6	1	000000000	0000
40	0.007 to 0.018	Not Rated	Not Rated	Passivated	ISO 2338-m6	1	000000000	0000
50	0.007 to 0.018	Not Rated	Not Rated	Passivated	ISO 2338-m6	1	000000000	00000
60	0.007 to 0.018	Not Rated	Not Rated	Passivated	ISO 2338-m6	1	000000000	00000

Metric 316 Stainless Steel

16 mm Dia.
Lg., mm	Dia. Tolerance, mm	Min. Hardness	Breaking Strength	Passivation	Specifications Met	Pkg. Qty.		Pkg.
20	0.007 to 0.018	Not Rated	Not Rated	Passivated	ISO 2338-m6	1	000000000	00000
30	0.007 to 0.018	Not Rated	Not Rated	Passivated	ISO 2338-m6	1	000000000	0000
40	0.007 to 0.018	Not Rated	Not Rated	Passivated	ISO 2338-m6	1	000000000	00000
50	0.007 to 0.018	Not Rated	Not Rated	Passivated	ISO 2338-m6	1	000000000	00000

Pull-Out Dowel Pins

One end of these pins is tapped, and the other is chamfered for easy insertion. To remove, thread a screw or tool into the tapped hole, then pull the pin out. Because they aren't vented, they work best in through holes. Use them as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts. Pins are precision ground for accurate alignment. Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.

Metric pins meet DIN 7979D-m6 specifications.

Steel pins have good strength.

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

Metric 52100 Alloy Steel Pins

		Thread
Lg., mm	Dia. Tolerance, mm	Size	Pitch, mm	Min. Hardness	Breaking Strength, lbs.	Specifications Met		Each
16 mm Dia.
32	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	00000
36	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000
40	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000
50	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000
60	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000
70	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000

Optional Insertion and Removal Tools

Use with internally threaded dowel pins. A complete tool requires a puller handle and a tip that fits your pin. You’ll also need a socket head cap screw that can thread into the pin. To use, thread a tip into the puller handle and fit the other end of the tip over the screw. Slide the weight along the handle to push or pull.

Component	For Pin Dia.	Overall Lg.		Each
Puller Handle	__	12 1/4"	000000000	000000
Tip	3/4"-1 1/2" (13-20 mm)	__	000000000	00000
Optional Extension	__	5 1/2"	000000000	00000

Flat-Vent Pull-Out Dowel Pins

The flat side of these pins relieves trapped air, making them easier to insert and remove from blind holes. One end is tapped and the other is chamfered for easy insertion. To remove, thread a screw or tool into the tapped hole, then pull them out. Use them as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts. Pins are precision ground for accurate alignment. Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.

Metric pins meet DIN standards.

Steel pins have good strength.

Use puller handles, tips, and optional extensions (sold separately) with some internally threaded dowel pins to create insertion and removal tools. A complete tool requires a puller handle and a tip that fits your pin. You’ll also need a socket head cap screw that can thread into the pin. To use, thread a tip into the puller handle and fit the other end of the tip over the screw. Slide the weight along the handle to push or pull.

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

Metric 52100 Alloy Steel Pins

Pins
		Thread							Puller Handles		Tips		Optional Extensions
Lg., mm	Dia. Tolerance, mm	Size	Pitch, mm	Min. Hardness	Breaking Strength, lbs.	Specifications Met		Each		Each		Each		Each
16 mm Dia.
32	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	00000	000000000	000000	000000000	000000	000000000	000000
40	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000	000000000	00000	000000000	00000	000000000	00000
50	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000	000000000	00000	000000000	00000	000000000	00000
60	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000	000000000	00000	000000000	00000	000000000	00000
70	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000	000000000	00000	000000000	00000	000000000	00000
80	0.007 to 0.018	M8	1.25	Rockwell C52	33,500	DIN 7979D-m6	000000000	0000	000000000	00000	000000000	00000	000000000	00000

Hollow Dowel Pins

Pass wires and other components through these hollow pins. They're precision ground for accurate alignment and have chamfered ends for easy insertion. For the best fit, install them in a hole equal to or slightly smaller than the diameter shown. Pins are made of steel for good strength.

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

1004-1045 Carbon Steel
Lg., mm	Dia. Tolerance, mm	Wall Thick., mm	Pkg. Qty.		Pkg.
16 mm Dia.
20	0.007 to 0.018	2.4	1	000000000	00000
24	0.007 to 0.018	2.4	1	000000000	0000
30	0.007 to 0.018	2.4	1	000000000	0000

Clevis Pins

Clevis Pin

An alternative to bolts and rivets, these pins lock in place with a cotter pin. Choose a clevis pin and add your own cotter pin, or select a clevis pin that includes a reusable hairpin cotter pin.

Steel pins have good strength. Pins with a zinc-plated finish have some corrosion resistance.

Metric pins meet DIN 1444B specifications.

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

Metric Zinc-Plated 1004-1045 Carbon Steel Clevis Pins

			Head
Usable Lg., mm	Lg., mm	Dia. Tolerance, mm	Dia., mm	Ht., mm	Through Hole Dia., mm	For Max. Cotter Pin Dia., mm	Min. Hardness	Specifications Met	Pkg. Qty.		Pkg.
16 mm Dia.
31	40	-0.110 to 0.000	25	5	4	4	Rockwell B67	DIN 1444B	1	000000000	00000
41	50	-0.110 to 0.000	25	5	4	4	Rockwell B67	DIN 1444B	1	000000000	00000
51	60	-0.110 to 0.000	25	5	4	4	Rockwell B67	DIN 1444B	1	000000000	00000
58	65	-0.110 to 0.000	25	5	4	4	Rockwell B67	DIN 1444B	1	000000000	00000

Toggle-Lock Clevis Pins with Handle

A swivel handle makes these pins easy to install and remove, while the toggle locks them in place. Flip the toggle to release the pin.

Zinc-plated carbon steel pins have good strength and some corrosion resistance.

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

Zinc-Plated 1045 Carbon Steel
Usable Lg.	Dia. Tolerance	Min. Hardness		Each
16mm Dia.
90mm	-0.110mm to 0mm	Rockwell B70	000000000	000000

Flat-Head Quick-Release Pins

These pins have a low-profile head, so they won't get knocked out of place. Pins have a spring-loaded ball that pops out when the pin is pushed into a hole, and retracts when the pin is pulled out. For the best fit, the hole should be as close to the diameter as possible, but not larger than the diameter at extended ball height.

Zinc-plated steel pins have good strength and some corrosion resistance.

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

		Head
Usable Lg.	Dia. Tolerance	Dia.	Ht.	Dia. at Extended Ball Ht.	Min. Hardness	Ball Material	Pkg. Qty.		Pkg.
Zinc-Plated 1004-1045 Carbon Steel
16mm Dia.
24mm	-0.11mm to 0mm	25mm	5mm	18mm	Rockwell B60	18-8 Stainless Steel	1	000000000	00000
34mm	-0.11mm to 0mm	25mm	5mm	18mm	Rockwell B60	18-8 Stainless Steel	1	000000000	0000
44mm	-0.11mm to 0mm	25mm	5mm	18mm	Rockwell B60	18-8 Stainless Steel	1	000000000	0000

Strong-Hold Quick-Release Pins

Two spring-loaded balls give these pins more holding power than quick-release pins with only one retaining ball. They pop out when the pin is pushed into a hole, and retract when the pin is pulled out. For the best fit, the hole should be as close to the diameter as possible, but not larger than the diameter at extended ball height.

Pins are made of 17-4 PH stainless steel for strength with some corrosion resistance, and passivated for added protection against corrosion and oxidation. They are magnetic. Breaking strength is measured as double shear, which is the force required to break a pin into three pieces

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

17-4 PH Stainless Steel
Usable Lg.	Dia. Tolerance	Dia. at Extended Ball Ht.	Min. Hardness	Breaking Strength, lbs.		Each
16mm Dia.
15mm	-0.08mm to 0mm	18.54mm	Rockwell C40	61,800	000000000	000000
25mm	-0.08mm to 0mm	18.54mm	Rockwell C40	61,800	000000000	00000
40mm	-0.08mm to 0mm	18.54mm	Rockwell C40	61,800	000000000	00000
50mm	-0.08mm to 0mm	18.54mm	Rockwell C40	61,800	000000000	00000
60mm	-0.08mm to 0mm	18.54mm	Rockwell C40	61,800	000000000	00000
80mm	-0.08mm to 0mm	18.54mm	Rockwell C40	61,800	000000000	00000
90mm	-0.08mm to 0mm	18.54mm	Rockwell C40	61,800	000000000	00000
100mm	-0.08mm to 0mm	18.54mm	Rockwell C40	61,800	000000000	00000

T-Handle Locking Quick-Release Pins

Pin with Split Ring

For a more secure hold than standard quick-release pins, these pins lock in place until you push the button to release the spring-loaded retaining balls. A T-handle makes them easy to grip. Use them in a hole as close to the diameter as possible, but not larger than the diameter at extended ball height. Pins are made of 17-4 PH stainless steel for strength with some corrosion resistance, and passivated for added protection against corrosion and oxidation. They are magnetic. Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.

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

						With Split Ring
Usable Lg.	Dia. at Extended Ball Ht.	Min. Hardness	Breaking Strength, lbs.	Handle Material	Handle Color		Each
Metric 17-4 PH Stainless Steel
16mm Dia.
50mm	19mm	Rockwell C40	57,500	380 Aluminum	Black	000000000	000000
75mm	19mm	Rockwell C40	57,500	380 Aluminum	Black	000000000	00000

Ejector Pins

Also known as knockout and forged pins, use these pins to push parts out of molds. Pins are precision-ground to tight tolerances and hardened for strength and wear resistance. Machining is not recommended.

H13 tool steel pins resist rapid changes in temperature.

Metric pins meet DIN 1530 specifications.

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

Metric Nitride-Coated H13 Tool Steel

		Head			160 mm Lg.		250 mm Lg.		400 mm Lg.
Dia., mm	Dia. Tolerance, mm	Dia., mm	Ht., mm	Min. Hardness		Each		Each		Each
16.0000	-0.017 to -0.006	22	7	Rockwell C41	000000000	000000	000000000	000000	000000000	000000

Slotted Spring Pins

Also known as roll, tension, split, and expansion pins, these pins have a slot along one side that you squeeze closed to install them into unthreaded holes. Once installed, they expand slightly, creating outward tension that holds them tight against the hole wall. These pins absorb shock and vibration in your system, and keep parts from loosening. They are often used as hinge pins, or to hold springs and power transmission components in place.

Install these pins into a hole. They have at least one chamfered end, which means the end is angled to make insertion easier.

Breaking strength is measured as double shear, which is the amount of force required to break a pin into three pieces.

Some metric pins with the same diameter come in two different wall thicknesses. Thinner walls are more flexible, easier to install, and won’t weigh down your assembly as much as thicker pins. Layer a pin with a thin wall inside a pin with a thicker wall to increase the breaking strength. Make sure the slots are opposite one another for maximum strength.

Steel pins are strong and wear resistant.

Pins that meet specifications for ISO 8752 (formerly DIN 1481) or ISO 13337 (formerly DIN 7346) adhere to international standards for pin dimensions.

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

Metric 1050-1095 Spring Steel

End View

16 mm Dia.
Lg., mm	For Hole Dia., mm	Wall Thick., mm	Min. Hardness	Breaking Strength, lbs.	Passivation	Specifications Met	Pkg. Qty.		Pkg.
10	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	10	000000000	000000
12	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	5	000000000	0000
14	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
16	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
18	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
20	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	5	000000000	00000
22	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
24	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
26	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
28	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	5	000000000	00000
30	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
32	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
36	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
40	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
45	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
50	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
55	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
60	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
70	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	0000
120	16	1.5	Rockwell C42	22,000	Not Passivated	DIN 7346, ISO 13337	1	000000000	00000

Press-Fit Locating and Support Buttons

Support and position workpieces and fixtures from the bottom or side. These buttons press into a drilled hole for permanent installation. Also known as rest buttons.

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

Metric

		Stud		Tolerance
Dia., mm	Lg., mm	Dia., mm	Lg., mm	Lg., mm	Stud Dia., mm	Specifications Met		Each
Steel
16	8	8	12	-0.036 to 0	0 to 0.04	DIN 6321	0000000	000000

Screw-Mount Locating and Support Buttons

Mount through the counterbored hole with a socket head cap screw to support and position workpieces and fixtures from the bottom or side. They’re also known as rest buttons.

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

Metric

Steel
Dia., mm	Lg., mm	Lg. Tolerance, mm	For Mounting Screw Size	Mounting Fasteners Included		Each
16	12	-0.03 to 0.03	M5	No	0000000	00000