Base Studs | McMaster-Carr

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System of Measurement

Thread Size

Material

Length

Base Diameter

Hole Diameter

Thread Spacing

Thread Type

REACH

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

RoHS

Thread Fit

Unified Standard Class 2A

Thread Pitch

204 Products

Adhesive-Ready Studs

Large holes let adhesive flow through the base for a secure hold.

Zinc-Plated Steel—The most common choice for areas with occasional exposure to moisture.

316 Stainless Steel—Superior to 18-8 stainless steel, these studs won't degrade when exposed to harsh weather, salt water, and most chemicals.

	Lg.	Base Dia.	Hole Dia.	Tensile Strength	Hardness	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				8-32

				3/8"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000


				3/8"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	0000
				1/2"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
				1/2"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	0000
				5/8"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
				3/4"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
				1"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
				1"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000




						10-32

						1/2"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000


						1/2"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	0000
						5/8"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
						3/4"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
						3/4"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	0000
						1"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
						1"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
						1 1/4"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
						1 1/4"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000




								1/4"-20

								1/2"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000


								1/2"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	0000
								5/8"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
								3/4"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
								3/4"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
								1"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000
								1"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
								1 1/4"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
								1 1/4"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
								1 1/2"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
								1 1/2"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000


								2"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
								2"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
								2 1/2"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
								2 1/2"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
								3"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
								3"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000




								5/16"-18

		5/8"						29/32"	0.197"	Not Rated	Not Rated	10	000000000	0000


		3/4"	29/32"					0.197"	Not Rated	Not Rated	10	000000000	00000
		3/4"	1 1/2"					0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
		1"	29/32"					0.197"	Not Rated	Not Rated	10	000000000	00000
		1"	1 1/2"					0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
		1 1/4"	29/32"					0.197"	Not Rated	Not Rated	10	000000000	00000
		1 1/2"	29/32"					0.197"	Not Rated	Not Rated	10	000000000	00000
		1 1/2"	1 1/2"					0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
		2"	29/32"					0.197"	Not Rated	Not Rated	10	000000000	00000
		2"	1 1/2"					0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
		2 1/2"	29/32"					0.197"	Not Rated	Not Rated	10	000000000	00000


		2 1/2"	1 1/2"					0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
		3"	29/32"	0.197"				Not Rated	Not Rated	10	000000000	00000
		3"	1 1/2"	0.157", 0.197"	Not Rated			Not Rated	10	000000000	00000




				M4 × 0.7 mm

				10 mm	23 mm			5 mm	Not Rated	Not Rated	10	000000000	0000


				10 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	10	000000000	0000
				12 mm	23 mm			5 mm	Not Rated	Not Rated	10	000000000	0000
				12 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	10	000000000	0000
				16 mm	23 mm			5 mm	Not Rated	Not Rated	10	000000000	0000
				16 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	10	000000000	0000
				20 mm	23 mm			5 mm	Not Rated	Not Rated	10	000000000	0000
				20 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	10	000000000	0000
				25 mm	23 mm	5 mm		Not Rated	Not Rated	10	000000000	0000
				25 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000




						M5 × 0.8 mm

						12 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	0000


						12 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	0000
						16 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	0000
						16 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	0000
						20 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	0000
						20 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
						25 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	0000
						25 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
						30 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000
						30 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000




								M6 × 1 mm

12 mm								23 mm	5 mm	Not Rated	Not Rated	10	000000000	0000


12 mm	38 mm							4 mm, 5 mm	Not Rated	Not Rated	10	000000000	0000
16 mm	23 mm							5 mm	Not Rated	Not Rated	10	000000000	0000
16 mm	38 mm							4 mm, 5 mm	Not Rated	Not Rated	10	000000000	0000
20 mm	23 mm							5 mm	Not Rated	Not Rated	10	000000000	0000
20 mm	38 mm							4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
25 mm	23 mm							5 mm	Not Rated	Not Rated	10	000000000	0000
25 mm	38 mm							4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
30 mm	23 mm							5 mm	Not Rated	Not Rated	10	000000000	00000
30 mm	38 mm							4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
40 mm	23 mm							5 mm	Not Rated	Not Rated	10	000000000	00000


40 mm	38 mm							4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000




								M8 × 1.25 mm

								16 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	0000


		16 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
		20 mm	23 mm					5 mm	Not Rated	Not Rated	10	000000000	00000
		20 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
		25 mm	23 mm					5 mm	Not Rated	Not Rated	10	000000000	00000
		25 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
		30 mm	23 mm					5 mm	Not Rated	Not Rated	10	000000000	00000
		30 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
		40 mm	23 mm					5 mm	Not Rated	Not Rated	10	000000000	00000
		40 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
		50 mm	23 mm					5 mm	Not Rated	Not Rated	10	000000000	00000


		50 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000




				M10 × 1.5 mm

				25 mm	23 mm			5 mm	Not Rated	Not Rated	10	000000000	00000


				25 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
				40 mm	23 mm			5 mm	Not Rated	Not Rated	10	000000000	00000
				40 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
				50 mm	23 mm			5 mm	Not Rated	Not Rated	10	000000000	00000
				50 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
				65 mm	23 mm			5 mm	Not Rated	Not Rated	10	000000000	00000
				65 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
				75 mm	23 mm			5 mm	Not Rated	Not Rated	5	000000000	0000
				75 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000


				316 Stainless Steel







								8-32

								3/8"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000


								3/8"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
								1/2"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
								1/2"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
								5/8"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
								3/4"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
								1"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
								1"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000




10-32

1/2"	29/32"									0.197"	Not Rated	Not Rated	10	000000000	00000


1/2"	1 1/2"									0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
5/8"	29/32"									0.197"	Not Rated	Not Rated	10	000000000	00000
3/4"	29/32"									0.197"	Not Rated	Not Rated	10	000000000	00000
3/4"	1 1/2"									0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
1"	29/32"									0.197"	Not Rated	Not Rated	10	000000000	00000
1"	1 1/2"									0.157", 0.197"	Not Rated	Not Rated	5	000000000	0000
1 1/4"	29/32"									0.197"	Not Rated	Not Rated	10	000000000	00000
1 1/4"	1 1/2"									0.157", 0.197"	Not Rated	Not Rated	5	000000000	0000




										1/4"-20

										1/2"	29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000


										1/2"	1 1/2"	0.157", 0.197"	Not Rated	Not Rated	10	000000000	00000
		5/8"								29/32"	0.197"	Not Rated	Not Rated	10	000000000	00000
		3/4"	29/32"							0.197"	Not Rated	Not Rated	10	000000000	00000
		3/4"	1 1/2"							0.157", 0.197"	Not Rated	Not Rated	5	000000000	0000
		1"	29/32"							0.197"	Not Rated	Not Rated	10	000000000	00000
		1"	1 1/2"							0.157", 0.197"	Not Rated	Not Rated	5	000000000	0000
		1 1/4"	29/32"							0.197"	Not Rated	Not Rated	10	000000000	00000
		1 1/4"	1 1/2"							0.157", 0.197"	Not Rated	Not Rated	5	000000000	0000
		1 1/2"	29/32"							0.197"	Not Rated	Not Rated	10	000000000	00000
		1 1/2"	1 1/2"							0.157", 0.197"	Not Rated	Not Rated	5	000000000	0000


		2"	29/32"							0.197"	Not Rated	Not Rated	5	000000000	00000
		2"	1 1/2"							0.157", 0.197"	Not Rated	Not Rated	5	000000000	00000
		2 1/2"	29/32"							0.197"	Not Rated	Not Rated	5	000000000	00000
		2 1/2"	1 1/2"							0.157", 0.197"	Not Rated	Not Rated	5	000000000	00000
		3"	29/32"							0.197"	Not Rated	Not Rated	5	000000000	00000
		3"	1 1/2"							0.157", 0.197"	Not Rated	Not Rated	5	000000000	00000




				5/16"-18

				5/8"	29/32"					0.197"	Not Rated	Not Rated	5	000000000	0000


				3/4"	29/32"	0.197"	Not Rated			Not Rated	5	000000000	0000
				3/4"	1 1/2"	0.157", 0.197"	Not Rated			Not Rated	5	000000000	00000
				1"	29/32"	0.197"	Not Rated			Not Rated	5	000000000	00000
				1"	1 1/2"	0.157", 0.197"	Not Rated			Not Rated	5	000000000	00000
				1 1/4"	29/32"	0.197"	Not Rated			Not Rated	5	000000000	00000
				1 1/2"	29/32"	0.197"	Not Rated			Not Rated	5	000000000	00000
				1 1/2"	1 1/2"	0.157", 0.197"	Not Rated			Not Rated	5	000000000	00000
				2"	29/32"	0.197"	Not Rated			Not Rated	5	000000000	00000
				2"	1 1/2"	0.157", 0.197"	Not Rated			Not Rated	5	000000000	00000
				2 1/2"	29/32"	0.197"	Not Rated			Not Rated	5	000000000	00000


				2 1/2"	1 1/2"	0.157", 0.197"	Not Rated			Not Rated	5	000000000	00000
				3"	29/32"	0.197"	Not Rated			Not Rated	5	000000000	00000
				3"	1 1/2"	0.157", 0.197"	Not Rated			Not Rated	5	000000000	00000




						M4 × 0.7 mm

						10 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000


						10 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
						12 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000
						12 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
						16 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000
						16 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
						20 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000
20 mm						38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
25 mm	23 mm					5 mm	Not Rated	Not Rated	10	000000000	00000
25 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000




						M5 × 0.8 mm

						12 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000


						12 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
						16 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000
						16 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
						20 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000
						20 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
						25 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000
						25 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	5	000000000	0000
						30 mm	23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000
						30 mm	38 mm	4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000




								M6 × 1 mm

		12 mm						23 mm	5 mm	Not Rated	Not Rated	10	000000000	00000


		12 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	10	000000000	00000
		16 mm	23 mm					5 mm	Not Rated	Not Rated	10	000000000	00000
		16 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	5	000000000	0000
		20 mm	23 mm					5 mm	Not Rated	Not Rated	5	000000000	0000
		20 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
		25 mm	23 mm					5 mm	Not Rated	Not Rated	5	000000000	00000
		25 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
		30 mm	23 mm					5 mm	Not Rated	Not Rated	5	000000000	00000
		30 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
		40 mm	23 mm					5 mm	Not Rated	Not Rated	5	000000000	00000


		40 mm	38 mm					4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000




								M8 × 1.25 mm

								16 mm	23 mm	5 mm	Not Rated	Not Rated	5	000000000	00000


				16 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
				20 mm	23 mm			5 mm	Not Rated	Not Rated	5	000000000	00000
				20 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
				25 mm	23 mm			5 mm	Not Rated	Not Rated	5	000000000	00000
				25 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
				30 mm	23 mm			5 mm	Not Rated	Not Rated	5	000000000	00000
				30 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
				40 mm	23 mm			5 mm	Not Rated	Not Rated	5	000000000	00000
				40 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
				50 mm	23 mm			5 mm	Not Rated	Not Rated	5	000000000	00000


				50 mm	38 mm			4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000




M10 × 1.5 mm

25 mm	23 mm							5 mm	Not Rated	Not Rated	5	000000000	00000


25 mm	38 mm							4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
40 mm	23 mm							5 mm	Not Rated	Not Rated	5	000000000	00000
40 mm	38 mm							4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000
50 mm	23 mm							5 mm	Not Rated	Not Rated	5	000000000	00000
50 mm	38 mm							4 mm, 5 mm	Not Rated	Not Rated	5	000000000	00000

Adhesive-Back Studs

Stick these studs to nearly any surface for a strong bond and a watertight seal.

Zinc-Plated Steel—The most common choice for areas with occasional exposure to moisture.

	Hardness	Adhesive Type	Pkg. Qty.		Pkg.
Zinc-Plated Steel







	1/4"-20

	3/4"	29/32"	Not Rated	Not Rated	3M VHB (Very High Bond)	5	000000000	000000


	1"	1 1/2"	Not Rated	Not Rated	3M VHB (Very High Bond)	5	000000000	00000




			M6 × 1 mm

			20 mm	23 mm	Not Rated	Not Rated	3M VHB (Very High Bond)	5	000000000	00000


			25 mm	38 mm	Not Rated	Not Rated	3M VHB (Very High Bond)	5	000000000	00000