Bolt On Stoppers | McMaster-Carr

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85 Products

Conveyor Stops

Add a stop on a conveyor to control product flow and allow for accumulation.

Bolt On

Bolt-on stops attach to the conveyor frame.

	For Overall Wd.	Lg.	Wd.	Ht.	Ga.	Mounting Fasteners Included	No. of Mounting Holes	Mounting Hole Dia.	Mounting Hole Ctr.-to-Ctr.	Color		Each
Powder-Coated Steel



	10"	12"	1 1/2"	12"	1 1/2"	10	Yes	2	1/4"	11"	Blue	5899K72	000000


	13"	15"	1 1/2"	15"	1 1/2"	10	Yes	2	1/4"	14"	Blue	5899K74	00000
	16"	18"	1 1/2"	18"	1 1/2"	10	Yes	2	1/4"	17"	Blue	5899K76	00000
	22"	24"	1 1/2"	24"	1 1/2"	10	Yes	2	1/4"	23"	Blue	5899K78	00000

Fixture Plates

Lay the foundation for your fixturing setup. These plates have a grid with evenly spaced threaded holes to install angle brackets and other fixturing components. They’re often used to help secure workpieces for measuring and inspecting. Just like a battleship gameboard, the edges are labeled with letters and numbers, making it easy to identify holes. While these lightweight plates aren’t for machining, you can use them for light fabrication jobs, such as laser marking. All can be attached to your table with clamps (not included), making them easy to remove and swap.

Fixture Plates

Plates with mounting holes can be bolted down on fixture tables for more stability than those held down by clamps. Make sure the grid of your plate and table align for precise measurements.

Anodized Aluminum—Anodized aluminum plates are often used with coordinate measuring machines (CMMs) and optical comparators. The coating protects them from scratches and wear, even when you’re working with heavy parts.

					Holes		Bolt-On Mount
	Lg.	Wd.	Thk.	Parallel Tolerance	No. of	Ctr.-to-Ctr.	Mounting Fasteners Included	No. of Mounting Holes	Mounting Hole Style	For Mounting Fastener Thread Size	Material		Each
1/4"-20 Hole Thread Size



		3"	3"	1/2"	0.025"	21	1/2"	Yes	4	Counterbored	1/4"-20	Anodized Aluminum	1337N17	0000000


		3"	6"	1/2"	0.025"	51	1/2"	Yes	4	Counterbored	1/4"-20	Anodized Aluminum	1337N18	000000

Quick-Change Adapters

Quick-change adapters fasten to the side of plates, converting them into quick-change fixture plates. Rather than having to clamp or bolt plates down, adapters let you snap them in and out of a magnetic mounting rail.

			Magnetic Mount		Bolt-On Mount
Lg.	Wd.	Thk.	Max. Magnetic Pull, lbf	No. of Mounting Edges	Mounting Fasteners Included	No. of Mounting Holes	For Mounting Fastener Thread Size	Mounting Hole Ctr.-to-Ctr.	Material		Each



	6"	1"	1/2"	3.5	1	Yes	2	10-32	5 1/2"	Anodized Aluminum	6364N19	0000000


	180 mm	30 mm	13 mm	3.5	1	Yes	2	M6	147 mm	Anodized Aluminum	6364N21	000000

Conveyor Mounting Rod Brackets


Style A	Style B	Style C

Style D	Style E	Style F

Style G	Style H	Style J

Style K	Style L	Style M

Style N	Style P	Style Q

Brackets mount to the frame of a conveyor to hold mounting rods.

For Vertical Rod—Fixed


Style A	Style B	Style C	Style D	Style E

Style B—Style B brackets have grooves to accept square rods.

Style D—Style D brackets have grooves to accept square rods.

Style E—Style E brackets have knobs for quick adjustments.

									Mounting Slot		Mounting Hole
	Style	For Rod Dia.	For Rod Wd.	Wd.	Ht.	Ht. (A)	Distance to Rod Center	Mounting Fasteners Included	Wd.	Ht.	Dia.	Ctr.-to-Ctr.	For T-Slot Wd., mm		Each
Plastic







				For Round Rods

				A	1/2"	—	3.29"	5.76"	1.98"	2.53"	No	0.41"	2.64"	—	—	—	9268K22	000000


				B	1/2"	—	—	—	—	0.78"	No	—	—	0.250"	1.59"	—	9268K68	00000




						For Round and Square Rods

						B	12 mm	10 mm	1.57"	—	—	0.79"	Yes	—	—	0.250"	1.57"	8	9268K963	00000


						Aluminum







										For Round Rods

										C	1/2"	—	1.57"	—	—	0.71"	Yes	—	—	0.220"	1.50"	8	9268K966	00000


										C	12 mm	—	1.57"	—	—	0.71"	Yes	—	—	0.220"	1.50"	8	9268K967	00000




												For Round and Square Rods

												D	1/2"	3/8"	0.62"	—	—	0.27"	Yes	—	—	0.200"	1.06"	8	9268K968	00000


												Stainless Steel







																For Round Rods

																C	1/2"	—	1.57"	—	—	0.71"	Yes	—	—	0.220"	1.50"	—	9268K961	00000


																C	12 mm	—	1.57"	—	—	0.71"	Yes	—	—	0.220"	1.50"	—	9268K962	00000
																E	1/2"	—	2.20"	5.00"	4.00"	1.53"	No	0.41"	0.50"	—	—	—	9268K36	00000
																E	5/8"	—	2.20"	5.00"	4.00"	1.53"	No	0.39"	0.50"	—	—	—	5103N22	00000

Replacement Knobs

			Knob
E	1/2"	Black	Plastic	Black	9268K494	000000

For Horizontal Rod—Fixed


Style F	Style G	Style H

Style J	Style K

Style F—Style F brackets have knobs for quick adjustments and two separate mounting holes.

Style G—Style G brackets have knobs for quick adjustments.

Style H—Style H brackets have knobs for quick adjustments. They include a spring-loaded rod that attaches to a guide rail. A push on the knob moves the rod and guide rail for fast, consistent adjustment. The spacer can be cut to the length needed for adjustments between two positions.

Style K—Style K brackets mount to the top of a conveyor. These brackets grip the rod as the nut on the bottom is tightened.

							Rod					Mounting Slot
	Style	For Rod Dia.	Wd.	Ht.	Dia.	Distance to Rod Center	Lg.	Material	Thread Size	Max. Adjustment	Mounting Fasteners Included	Wd.	Ht.	Mounting Hole Dia.	Features		Each
Plastic







				For Round Rods

				F	1/2"	2.56"	7.81"	—	2.50"	—	—	—	—	No	0.43"	2.09"	—	—	5103N14	000000


				F	1/2"	2.56"	9.78"	—	3.43"	—	—	—	—	No	0.42"	1.63"	—	—	5103N12	00000
				F	5/8"	2.53"	7.78"	—	2.59"	—	—	—	—	No	0.42"	2.14"	—	—	5103N15	00000
				F	5/8"	2.56"	9.78"	—	3.43"	—	—	—	—	No	0.42"	1.63"	—	—	5103N13	00000
				G	1/2"	2.89"	10.25"	—	3.55"	—	—	—	—	No	0.41"	3.31"	—	—	9268K37	00000
				H	3/4"	2.89"	—	—	3.55"	9 1/4"	Stainless Steel	5/16"-18	2 1/2"	No	0.41"	3.72"	—	Clip-On Spacer	9268K62	000000


				Stainless Steel







								For Round Rods

								H	3/4"	2.38"	—	—	2.52"	9 1/4"	Stainless Steel	5/16"-18	2 1/2"	No	0.41"	2.25"	—	Clip-On Spacer	9268K64	000000


								J	1/2"	2.94"	8.85"	—	3.81"	—	—	—	—	No	0.41"	3.31"	—	—	9268K26	00000
								K	1/2"	—	—	1.32"	3.50"	—	—	—	—	Yes	—	—	0.375"	—	9268K67	00000

Replacements for Brackets

Lg.	Material	Color		Each
2 1/2"	Plastic	Black	9268K65	000000
18"	Plastic	Gray	9268K66	00000

			Knob
G	1/2"	Black	Plastic	Black	9268K493	000000

For Horizontal Rod—Swivel


Style L	Style M	Style N

Style L—Style L brackets have knobs for quick adjustments. They also have a swivel head for added versatility when mounting at an angle.

Style M—Style M brackets have knobs for quick adjustments. They also have a swivel head for added versatility when mounting at an angle. They include a spring-loaded rod that attaches to a guide rail. A push on the knob moves the rod and guide rail for fast, consistent adjustment. The spacer can be cut to the length needed for adjustments between two positions.

Style N—Style N brackets have a swivel head for added versatility when mounting at an angle.

						Rod					Mounting Slot
	Style	For Rod Dia.	Wd.	Ht.	Distance to Rod Center	Lg.	Material	Thread Size	Max. Adjustment	Mounting Fasteners Included	Wd.	Ht.	Features		Each
Plastic







				For Round Rods

				L	1/2"	3.29"	8.96"	2.82"	—	—	—	—	No	0.41"	2.64"	—	9268K38	000000


				L	5/8"	3.28"	8.95"	3.33"	—	—	—	—	No	0.41"	3.03"	—	5103N11	00000


				Stainless Steel







								For Round Rods

								M	3/4"	2.88"	—	2.34"	9 1/4"	Stainless Steel	5/16"-18	2 1/2"	No	0.41"	2.25"	Clip-On Spacer	9268K63	000000


								N	1/2"	3.44"	8.85"	3.81"	—	—	—	—	No	0.41"	3.31"	—	9268K27	00000

Replacements for Brackets

Lg.	Material	Color		Each
2 1/2"	Plastic	Black	9268K65	000000
18"	Plastic	Gray	9268K66	00000

		Knob
L	1/2"	Plastic	Black	9268K492	00000

For Vertical and Horizontal Rod—Fixed


Style P	Style Q

Style P—Style P brackets have grooves to accept square rods, and can be mounted either horizontally or vertically.

Style Q—Style Q brackets have grooves to accept square rods, and can be mounted either horizontally or vertically.

								Mounting Hole
	Style	For Rod Dia., mm	For Rod Wd., mm	Wd.	Ht.	Distance to Rod Center	Mounting Fasteners Included	Dia.	Ctr.-to-Ctr.		Each
Aluminum







				For Round and Square Rods

				P	12	10	0.63"	0.98"	0.31"	No	0.217"	1.06"	5103N31	000000


				P	15	12	0.78"	1.18"	0.39"	No	0.256"	1.26"	5103N32	00000
				Q	15	12	0.78"	0.78"	0.39"	No	0.256"	1.26"	5103N33	00000

Conveyor Drip Pan Brackets

Add a drip pan underneath a conveyor with these brackets.

Drip Pan Brackets

	Wd.	Ht.	Ht. (A)	Dia.	Mounting Fasteners Included	Mounting Hole Dia.		Each
Plastic/Stainless Steel



	1/8"	1.4"	10"	2.8"	1.6"	No	0.4"	1368N11	000000

Conveyor Sensor and Reflector Brackets


	Style H

Mount sensors and reflectors on your conveyor frame.

Bolt On

Style H

Bolt-on brackets attach through the top of a conveyor.

Style H—Style H have universal mounting holes on their face for bolting your sensors or reflectors to them.

	Wd.	Dp.	Ht.	Mounting Fasteners Included	Features		Each
Steel



	H	3.34"	1.57"	3.54"	Yes	Universal Mounting Hole Pattern	9268K453	000000

Quick-Change Fixture Plates

Snap these magnetic plates in and out of the mounting rail as swappable stages for measuring and inspecting parts. Unlike standard fixture plates that you need to bolt or clamp down, these quickly attach and release, creating a hub of plates that are locked and loaded. As your coordinate measuring machine (CMM) works in the background, position your next workpiece on another plate so it’s ready to switch out for the next run. If you need more room to inspect parts, combine plates in a chain to extend your surface. While they’re not sturdy enough for use in machining, you can use them for light fabrication work, such as laser engraving.

When docked on a rail, the strong magnets in these plates hold them still. The lightweight aluminum makes them easy to lift and swap, and an anodized coating protects them from scratches and wear, even if you’re working with heavy parts.

Mounting Rails

Mounting rails are the home base for your magnetic fixture plates, corner plates, and plates for calibration spheres. Bolt them to your table to secure the dock for your quick-change system hub. Quick-change plate adapters allow you to convert a standard fixture plate into a quick-change fixture plate compatible with the mounting rail.

			Magnetic Mount		Bolt-On Mount
Lg.	Wd.	Thk.	Max. Magnetic Pull, lbf	No. of Mounting Edges	Mounting Fasteners Included	No. of Mounting Slots	Mounting Slot Lg.	Mounting Slot Wd.	Material		Each



	18"	2"	1/2"	3.5	3	No	2	5 7/16"	1/2"	Anodized Aluminum	6368N21	0000000


	30"	2"	1/2"	3.5	5	No	6	3 1/8"	1/2"	Anodized Aluminum	6368N22	000000
	540 mm	50 mm	13 mm	3.5	3	No	3	120 mm	13 mm	Anodized Aluminum	6368N27	000000
	720 mm	50 mm	13 mm	3.5	4	No	6	68 mm	13 mm	Anodized Aluminum	6368N28	000000

Steel Column Guards

Create a rigid barrier around load-bearing columns and other critical structures. These guards mount to the floor, so the force of a collision won’t be transferred to your column. Made from steel, they’re strong enough to stop a moving forklift. However, they don’t flex on impact like plastic or foam guards, so they may damage your vehicle. Their bright color helps drivers spot them before they get too close.

Mount these guards to the floor with wedge anchors or other concrete anchors.

For Square, Round, and I-Beam Columns


Style 1	Style 2

Style 1—These guards have one open side for easy installation in tight spaces or around obstacles, such as columns or pipes positioned against a wall.

Style 2—Wrap these guards around freestanding columns. They come with two matching plates that bolt together.

		Inside				Overall				Mounting Holes
	Style	Wd.	Dp.	Ht.	Thk.	Wd.	Dp.	Material	Color	Dia,	No. of	Mounting Fasteners Included	For Use Outdoors		Each
Bolt On



		1	12 3/4"	9 3/8"	42"	3/8"	19 1/2"	12 3/4"	Steel	Yellow	13/16"	6	No	Yes	9608N12	0000000


		2	18 1/2"	16"	48"	1/4"	19"	20 3/4"	Steel	Yellow	9/16"	8	No	Yes	9608N11	000000

Straight and L-Shaped Conveyor Brackets


Style A	Style B	Style C	Style D	Style E

Style F	Style G	Style H	Style J	Style K

These brackets mount to the frame of a conveyor to hold guide rails and accessories.

Straight Brackets—One Piece


Style A	Style B	Style C	Style D

Style A—Style A have a mounting slot, but you can also drill your own hole to mount at a custom height.

	Ht.	Thk.	Mounting Fasteners Included		Each
Stainless Steel



	A	4 1/2"	3/16"	Yes	9268K87	000000


	A	7 1/2"	3/16"	Yes	9268K88	00000
	B	8"	3/16"	No	9268K175	00000
	B	8"	1/4"	No	9268K143	00000
	C	6 1/2"	3/16"	No	9268K176	00000
	C	6 1/2"	1/4"	No	9268K177	00000
	C	8"	3/16"	No	9268K713	00000
	D	11 1/2"	1/8"	No	9268K156	00000

L-Brackets—One Piece


Style E	Style F

One-piece L-brackets attach to a vertical guide rail or sensor.

	Wd.	Ht.	Thk.	Mounting Fasteners Included		Each
Stainless Steel



	E	3 1/4"	5"	1/8"	No	9268K712	000000


	E	3 1/4"	7 3/4"	3/16"	No	9268K178	00000
	E	3 1/4"	7 3/4"	1/4"	No	9268K179	00000
	E	3 3/4"	5"	3/16"	No	9268K201	00000
	E	3 3/4"	5"	1/4"	No	9268K202	00000
	F	3 3/16"	5 5/16"	1/8"	No	9268K203	00000
	F	3 3/16"	5 5/16"	1/4"	No	9268K204	00000
	F	3 1/4"	5 5/16"	3/16"	No	9268K711	00000
	F	3 3/4"	3 1/4"	1/8"	No	9268K157	00000
	F	3 3/4"	3 1/4"	3/16"	No	9268K158	00000
	F	3 3/4"	3 1/4"	1/4"	No	9268K159	00000

L-Brackets—Two Piece


Style G	Style H	Style J	Style K

Two-piece L-brackets allow for offset mounting and extra clearance between the conveyor and guide rail or sensor.

				Ht.
	Style	Wd.	Ht.	(A)	(B)	Thk.	Mounting Fasteners Included		Each
Plastic



		G	3 5/8"	11 3/4"	5.85"	5.85"	—	No	9268K32	000000


		Stainless Steel



				H	3 1/4"	10 5/8"	5.30"	5.3"	1/8"	No	9268K34	00000


				H	3 1/4"	10 5/8"	5.30"	5.3"	3/16"	No	9268K151	00000
				H	3 1/4"	10 5/8"	5.30"	5.3"	1/4"	No	9268K152	00000
				J	3 1/4"	7 1/2"	3.75"	3 3/4"	1/8"	No	9268K252	00000
				J	3 1/4"	7 1/2"	3.75"	3 3/4"	3/16"	No	9268K253	00000
				J	3 1/4"	7 1/2"	3.75"	3 3/4"	1/4"	No	9268K254	00000
				J	3 1/4"	9 1/32"	3.75"	5 9/32"	1/8"	No	9268K262	00000
				J	3 1/4"	9 1/32"	3.75"	5 9/32"	3/16"	No	9268K263	00000
				J	3 1/4"	9 1/32"	3.75"	5 9/32"	1/4"	No	9268K264	00000
				K	3 1/4"	8 3/4"	5.00"	3 3/4"	1/8"	No	9268K272	00000
				K	3 1/4"	8 3/4"	5.00"	3 3/4"	3/16"	No	9268K273	00000


				K	3 1/4"	8 3/4"	5.00"	3 3/4"	1/4"	No	9268K274	00000
				K	3 1/4"	10 9/32"	5.00"	5 9/32"	1/8"	No	9268K282	00000
				K	3 1/4"	10 9/32"	5.00"	5 9/32"	3/16"	No	9268K283	00000
				K	3 1/4"	10 9/32"	5.00"	5 9/32"	1/4"	No	9268K284	00000

Post-Mount Steel Rack Guards


4 Side Mounting Holes	2 Front Mounting Holes

Bolt these durable steel guards anywhere along your uprights to shield them from impacts. They’re easier to install than floor-mount guards and more secure than snap- or strap-on guards.

4 Side Mounting Holes—Often installed next to shelves, these guards have a V-shaped face that deflects forks and pallet edges away from uprights as you load in or out. Secure them to the sides of your upright with the included fasteners.

2 Front Mounting Holes—Slide the included drop-in T-bolts into the rack’s existing slots and tighten from the front for quick installation. These guards also have a bullnose to help deflect impacts. A mounting hole allows for optional floor anchoring.

	Inside
	Wd.	Dp.	Overall Ht.	Thk.	Color	For Use Outdoors	Mounting Hardware		Each
Bolt On







				4 Side Mounting Holes

				3 1/8"	1 5/8"	12"	3/16"	Yellow	Yes	Two Pan Head Screws with Flat-Top Nut	9687N12	000000


				4 1/8"	1 5/8"	12"	3/16"	Yellow	Yes	Two Pan Head Screws with Flat-Top Nut	9687N13	00000




						2 Front Mounting Holes

						3 1/4"	2"	18"	3/16"	Yellow	Yes	One Wedge Anchor for Concrete, Two T-Bolts with Locknut	9687N11	00000

			Knob
For Style	For Rod Dia.	Color	Material	Color		Each
E	1/2"	Black	Plastic	Black	9268K494	000000