M4 Levels | McMaster-Carr

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System of Measurement

Mount Type

Height

Hardness Rating

Shape

Hardness

Base Plate Material

Thread Length

Stud Material

Performance

Thread Pitch

Material

Color

Load

REACH

Nonmarking

Construction

RoHS

Compliant with Exemptions

Minimum Temperature

-49° F to -25° F

-24° F to -1° F

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Maximum Temperature

Reinforcement Type

For Use Outdoors

36 Products

Mount Type

Threaded Stud

Twist into a threaded hole for easy installation

20 products

Threaded Hole

Twist onto a threaded stud for easy installation

16 products

Performance

Oil Resistant

Use on generators, pumps, and other oily equipment

2 products

Corrosion Resistant

Won't degrade in wet and frequently cleaned environments

9 products

Load-Rated Reinforced Threaded-Stud Bumpers

Style 1

These bumpers are tested to ensure they'll support the load of your application. They'll bear the weight of everything from a 50-pound saw to a 5,000-pound air compressor. All have a metal base plate for added strength and a longer service life than all-rubber bumpers. No separate fasteners are needed—just twist them into a threaded hole.

Style 1

Natural Rubber—These bumpers absorb impact well enough for most applications. However, they're not for use outdoors and break down when exposed to oil and harsh chemicals.

Stainless Steel Stud—Unlike bumpers with steel studs, these handle repeated washdowns without corroding.

Steel Stud—Durable and economical, these are the choice for most jobs.

Hardness Rating—The harder the bumper, the better it withstands impact and abrasion over time. The softer the bumper, the more cushioning it provides for objects made of glass, soft metal, and other fragile materials. Bumpers with a medium rating offer a balance of impact resistance and cushioning.

	Thread
	Size	Lg., mm	OD, mm	Ht., mm	Max. Load, lb.	Hardness	Hardness Rating	Color	Temp., ° F	Nonmarking	For Use Outdoors		Each
Natural Rubber with Steel Stud and Base Plate



		M4 × 0.7 mm	10	10	10	20	Durometer 55A	Medium	Black	-40 to 170	No	No	3810N114	00000
		M4 × 0.7 mm	10	10	10	45	Durometer 70A	Hard	Black	-40 to 170	No	No	3810N115	0000
		M4 × 0.7 mm	10	10	15	21	Durometer 55A	Medium	Black	-40 to 170	No	No	3810N116	0000
		M4 × 0.7 mm	10	10	15	35	Durometer 70A	Hard	Black	-40 to 170	No	No	3810N117	0000
		M4 × 0.7 mm	10	10	20	21	Durometer 55A	Medium	Black	-40 to 170	No	No	3810N118	0000
		M4 × 0.7 mm	10	10	20	35	Durometer 70A	Hard	Black	-40 to 170	No	No	3810N119	0000
		M4 × 0.7 mm	10	15	10	35	Durometer 55A	Medium	Black	-40 to 170	No	No	3810N12	0000
		M4 × 0.7 mm	10	15	10	90	Durometer 70A	Hard	Black	-40 to 170	No	No	3810N121	0000
		M4 × 0.7 mm	10	15	15	50	Durometer 50A	Medium	Black	-10 to 150	No	No	93115K881	0000
		M4 × 0.7 mm	10	15	15	80	Durometer 70A	Hard	Black	-40 to 170	No	No	3810N122	0000


		M4 × 0.7 mm	10	15	20	60	Durometer 50A	Medium	Black	-10 to 150	No	No	93115K891	0000
		M4 × 0.7 mm	10	15	20	130	Durometer 70A	Hard	Black	-40 to 170	No	No	3810N123	0000
		M4 × 0.7 mm	10	15	30	50	Durometer 55A	Medium	Black	-40 to 170	No	No	3810N124	0000
		M4 × 0.7 mm	10	15	30	80	Durometer 70A	Hard	Black	-40 to 170	No	No	3810N125	0000


		Natural Rubber with Corrosion-Resistant Stainless Steel Stud and Base Plate



				M4 × 0.7 mm	10	10	10	20	Durometer 55A	Medium	Black	-40 to 170	No	No	4720N112	0000
				M4 × 0.7 mm	10	10	15	21	Durometer 55A	Medium	Black	-40 to 170	No	No	4720N113	0000
				M4 × 0.7 mm	10	15	10	35	Durometer 55A	Medium	Black	-40 to 170	No	No	4720N115	0000
				M4 × 0.7 mm	10	15	15	50	Durometer 50A	Medium	Black	-10 to 150	No	No	93115K882	0000
				M4 × 0.7 mm	10	15	20	60	Durometer 50A	Medium	Black	-10 to 150	No	No	93115K892	0000
				M4 × 0.7 mm	10	15	30	50	Durometer 55A	Medium	Black	-40 to 170	No	No	4720N116	0000

Load-Rated Reinforced Threaded-Hole Bumpers


Style 1	Style 3

These bumpers are tested to ensure they'll support the load of your application. They'll bear the weight of everything from a 50-pound saw to a 2,000-pound air compressor. All have a metal base plate for added strength and a longer service life than all-rubber bumpers. Twist them onto a threaded stud on your equipment, or pair them with your own stud to create a custom-length bumper.

Style 1

Natural Rubber—These bumpers absorb impact well enough for most applications. However, they're not for use outdoors and break down when exposed to oil and harsh chemicals.

	Thread
	Size	Dp., mm	OD, mm	Ht., mm	Max. Load, lb.	Hardness	Hardness Rating	Color	Temp., ° F	Nonmarking	For Use Outdoors		Each
Natural Rubber with Steel Base Plate



		M4 × 0.7 mm	4	10	10	11	Durometer 40A	Medium Soft	Black	-40 to 170	Yes	No	9377K317	00000
		M4 × 0.7 mm	4	10	10	13	Durometer 55A	Medium	Black	-20 to 150	Yes	No	93115K371	0000
		M4 × 0.7 mm	4	10	10	45	Durometer 70A	Hard	Black	-40 to 170	Yes	No	9377K318	0000
		M4 × 0.7 mm	4	10	15	15	Durometer 40A	Medium Soft	Black	-40 to 170	Yes	No	9377K319	0000
		M4 × 0.7 mm	4	10	15	35	Durometer 70A	Hard	Black	-40 to 170	Yes	No	9377K322	0000
		M4 × 0.7 mm	4	15	15	30	Durometer 40A	Medium Soft	Black	-40 to 170	Yes	No	9377K323	0000
		M4 × 0.7 mm	4	15	15	50	Durometer 55A	Medium	Black	-20 to 150	Yes	No	93115K381	0000
		M4 × 0.7 mm	4	15	15	85	Durometer 70A	Hard	Black	-40 to 170	Yes	No	9377K324	0000
		M4 × 0.7 mm	4	15	20	30	Durometer 40A	Medium Soft	Black	-40 to 170	Yes	No	9377K325	0000
		M4 × 0.7 mm	4	15	20	60	Durometer 55A	Medium	Black	-20 to 150	Yes	No	93115K391	0000


		M4 × 0.7 mm	4	15	20	130	Durometer 70A	Hard	Black	-40 to 170	Yes	No	9377K326	0000


		Natural Rubber with Corrosion-Resistant Stainless Steel Base Plate



				M4 × 0.7 mm	4	10	10	13	Durometer 55A	Medium	Black	-20 to 150	Yes	No	93115K372	0000
				M4 × 0.7 mm	4	15	15	50	Durometer 55A	Medium	Black	-20 to 150	Yes	No	93115K382	0000
				M4 × 0.7 mm	4	15	20	60	Durometer 55A	Medium	Black	-20 to 150	Yes	No	93115K392	0000

Style 3

Abrasion-Resistant Polyurethane Rubber—Our toughest rubber bumpers, they keep their shape even when knocked and scraped by metal and other abrasive materials. They're often used on industrial vehicles, conveyors, and heavy construction equipment.

	Thread
	Size	Dp., mm	OD, mm	Ht., mm	Max. Load, lb.	Hardness	Hardness Rating	Color	Temp., ° F	Nonmarking	For Use Outdoors		Each
Abrasion-Resistant Polyurethane Rubber with Steel Base Plate



		M4 × 0.7 mm	6	19	13	3	Durometer 50 OO	Extra Soft	Black	-20 to 160	No	No	2572K31	000000
		M4 × 0.7 mm	6	19	13	6	Durometer 70 OO	Soft	Black	-20 to 160	No	No	2572K32	00000