Collar Studs | McMaster-Carr

Filter by

Thread Size

Length

Material

Projection Location

System of Measurement

Base Diameter

Thread Spacing

Thread Type

Base Thickness

Thread Fit

Unified Standard Class 2A

Unified Standard Class 3A

Tensile Strength

Base Length

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

RoHS

REACH

Base Width

101 Products

Weld Studs


Below-Head Projection	Above-Head Projection

Weld in place for greater rigidity and strength than other studs. These studs have a wide base that distributes the load and projections that concentrate the weld. Length listed is overall length.

Steel—Without a finish, these studs require minimal prep work before welding. After installation, you can paint them for a finished look.

Below-Head Projection—Choose these studs for a strong hold that uses the full strength of the fastener. Pass through a hole and weld them in place.

Above-Head Projection—Weld the head directly to the surface of the material for a smooth appearance.

			Base
	Lg.	Projection Location	Dia.	Thk.	Tensile Strength, psi	Hardness	Pkg. Qty.		Pkg.
Steel





				6-32

				1/2"	Below Head	0.323"	0.052"	60,000	Not Rated	100	93865A310	00000
				5/8"	Below Head	0.323"	0.052"	60,000	Not Rated	100	93865A120	0000
				3/4"	Below Head	0.323"	0.052"	60,000	Not Rated	100	93865A320	0000




						8-32

						3/8"	Below Head	0.385"	0.068"	60,000	Not Rated	100	93865A135	0000
						3/8"	Above Head	0.323"	0.052"	60,000	Not Rated	100	93865A550	0000
						1/2"	Below Head	0.385"	0.068"	60,000	Not Rated	100	93865A330	0000
						3/4"	Below Head	0.385"	0.068"	60,000	Not Rated	100	93865A340	0000
						1"	Below Head	0.385"	0.068"	60,000	Not Rated	100	93865A155	0000




								10-24

								3/8"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A160	0000
								3/8"	Above Head	0.385"	0.068"	60,000	Not Rated	100	93865A560	0000
								1/2"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A165	0000
								1/2"	Above Head	0.385"	0.068"	60,000	Not Rated	100	93865A570	0000
								5/8"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A170	00000
								3/4"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A175	00000
								3/4"	Above Head	0.385"	0.068"	60,000	Not Rated	100	93865A580	00000
								1"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A350	00000
								1 1/4"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A360	00000




										10-32

										3/8"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A370	0000
										1/2"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A190	0000
										1/2"	Above Head	0.385"	0.068"	60,000	Not Rated	100	93865A590	0000
										5/8"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A195	0000
										5/8"	Above Head	0.385"	0.068"	60,000	Not Rated	100	93865A610	00000
										3/4"	Below Head	0.448"	0.068"	60,000	Not Rated	100	93865A380	00000
										3/4"	Above Head	0.385"	0.068"	60,000	Not Rated	100	93865A620	00000
										1"	Below Head	0.448"	0.068"	Not Rated	Not Rated	50	93865A205	0000
										1"	Above Head	0.385"	0.068"	60,000	Not Rated	100	93865A630	00000




												1/4"-20

												3/8"	Below Head	0.575"	0.083"	Not Rated	Not Rated	50	93865A215	0000
												3/8"	Above Head	0.51"	0.083"	60,000	Not Rated	50	93865A640	0000
												1/2"	Below Head	0.575"	0.083"	Not Rated	Not Rated	50	93865A220	0000
												1/2"	Above Head	0.51"	0.083"	60,000	Not Rated	50	93865A650	0000
												5/8"	Below Head	0.575"	0.083"	Not Rated	Not Rated	50	93865A225	0000
												5/8"	Above Head	0.51"	0.083"	60,000	Not Rated	50	93865A660	0000
												3/4"	Below Head	0.575"	0.083"	Not Rated	Not Rated	50	93865A230	00000
3/4"												Above Head	0.51"	0.083"	60,000	Not Rated	50	93865A670	0000
7/8"	Below Head											0.575"	0.083"	60,000	Not Rated	25	93865A390	00000
1"	Below Head											0.575"	0.083"	Not Rated	Not Rated	50	93865A235	00000


1"	Above Head	0.51"	0.083"									60,000	Not Rated	50	93865A680	00000
1 1/4"	Below Head	0.575"	0.083"									60,000	Not Rated	25	93865A410	0000
1 1/2"	Below Head	0.575"	0.083"									60,000	Not Rated	25	93865A420	0000
1 3/4"	Below Head	0.575"	0.083"									60,000	Not Rated	25	93865A430	0000
2"	Below Head	0.575"	0.083"									60,000	Not Rated	25	93865A440	00000




		5/16"-18

		3/4"	Below Head	0.755"	0.099"							60,000	Not Rated	25	93865A450	00000
		3/4"	Above Head	0.63"	0.099"							60,000	Not Rated	5	93865A690	0000
		1"	Below Head	0.755"	0.099"							60,000	Not Rated	5	93865A460	0000
		1 1/4"	Below Head	0.755"	0.099"							60,000	Not Rated	25	93865A470	00000
		2"	Below Head	0.755"	0.099"							60,000	Not Rated	5	93865A480	00000




				3/8"-16

				1"	Below Head	0.88"	0.114"					60,000	Not Rated	10	93865A490	0000
				1 1/4"	Below Head	0.88"	0.114"					60,000	Not Rated	5	93865A510	0000
				1 1/2"	Below Head	0.88"	0.114"					60,000	Not Rated	10	93865A520	0000
				1 3/4"	Below Head	0.88"	0.114"					60,000	Not Rated	10	93865A530	0000




						1/2"-13

						1 1/4"	Below Head					1.005"	0.146"	60,000	Not Rated	5	93865A540	00000




								M3.5

								8 mm	Above Head			7 mm	1.1 mm	Not Rated	Not Rated	10	93865A710	0000
								25 mm	Above Head			7 mm	1.1 mm	Not Rated	Not Rated	10	93865A740	0000




												M4

												6 mm	Above Head	8 mm	1.2 mm	Not Rated	Not Rated	10	93865A750	0000
												8 mm	Above Head	8 mm	1.2 mm	Not Rated	Not Rated	10	93865A760	0000
												10 mm	Above Head	8 mm	1.2 mm	Not Rated	Not Rated	10	93865A770	0000

90° Angle Weld Studs

Weld these studs to flat surfaces in confined areas, narrow channels, and tight corners.

Steel—Without a finish, these studs require minimal prep work before welding. After installation, you can paint them for a finished look.

18-8 Stainless Steel—The choice for wet and outdoor environments, these studs resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

		Base
	Lg.	Lg.	Wd.	Thk.	Tensile Strength	Hardness	Pkg. Qty.		Pkg.
Steel





				6-32

				1/2"	9/16"	7/32"	3/64"	Not Rated	Not Rated	50	94445A110	000000




						8-32

						1/2"	5/8"	1/4"	1/16"	Not Rated	Not Rated	50	94445A200	00000




								10-24

								1/2"	11/16"	5/16"	1/16"	Not Rated	Not Rated	50	94445A300	00000




										10-32

										1/2"	11/16"	11/32"	1/16"	Not Rated	Not Rated	50	94445A400	00000




												1/4"-20

												1/2"	3/4"	3/8"	3/32"	Not Rated	Not Rated	25	94445A450	0000
												5/8"	3/4"	3/8"	3/32"	Not Rated	Not Rated	25	94445A500	0000
												3/4"	3/4"	3/8"	3/32"	Not Rated	Not Rated	25	94445A550	0000
												1"	3/4"	3/8"	3/32"	Not Rated	Not Rated	25	94445A600	00000


												18-8 Stainless Steel





																6-32

																3/8"	9/16"	7/32"	3/64"	Not Rated	Not Rated	25	96466A111	00000
																1/2"	9/16"	7/32"	3/64"	Not Rated	Not Rated	25	96466A010	00000




																		8-32

																		3/8"	5/8"	1/4"	1/16"	Not Rated	Not Rated	25	96466A112	00000
																		1/2"	5/8"	1/4"	1/16"	Not Rated	Not Rated	25	96466A025	00000
																		5/8"	5/8"	1/4"	1/16"	Not Rated	Not Rated	10	96466A113	0000
																		3/4"	5/8"	1/4"	1/16"	Not Rated	Not Rated	10	96466A114	0000
																		1"	5/8"	1/4"	1/16"	Not Rated	Not Rated	10	96466A116	0000
																		1 1/4"	5/8"	1/4"	1/16"	Not Rated	Not Rated	10	96466A117	0000
																		1 1/2"	5/8"	1/4"	1/16"	Not Rated	Not Rated	10	96466A118	0000




		10-24

		3/8"	11/16"															5/16"	1/16"	Not Rated	Not Rated	10	96466A119	0000
		1/2"	11/16"															5/16"	1/16"	Not Rated	Not Rated	10	96466A030	0000
		3/4"	11/16"															5/16"	1/16"	Not Rated	Not Rated	10	96466A123	0000
		1"	11/16"															5/16"	1/16"	Not Rated	Not Rated	10	96466A122	0000
		1 1/4"	11/16"															5/16"	1/16"	Not Rated	Not Rated	10	96466A124	0000




				10-32

				3/8"	11/16"													11/32"	1/16"	Not Rated	Not Rated	10	96466A125	0000
				1/2"	11/16"													11/32"	1/16"	Not Rated	Not Rated	10	96466A040	0000
				3/4"	11/16"	11/32"												1/16"	Not Rated	Not Rated	10	96466A126	0000
				1"	11/16"	11/32"	1/16"											Not Rated	Not Rated	10	96466A127	0000
				1 1/4"	11/16"	11/32"	1/16"											Not Rated	Not Rated	10	96466A128	00000
				1 3/4"	11/16"	11/32"	1/16"											Not Rated	Not Rated	10	96466A129	00000




						1/4"-20

						1/2"	3/4"	3/8"	3/32"									Not Rated	Not Rated	10	96466A045	00000
						5/8"	3/4"	3/8"	3/32"									Not Rated	Not Rated	10	96466A050	00000
						3/4"	3/4"	3/8"	3/32"									Not Rated	Not Rated	10	96466A055	00000
						7/8"	3/4"	3/8"	3/32"									Not Rated	Not Rated	10	96466A131	00000
						1"	3/4"	3/8"	3/32"									Not Rated	Not Rated	5	96466A060	0000
						1 1/4"	3/4"	3/8"	3/32"	Not Rated								Not Rated	5	96466A132	0000
						1 1/2"	3/4"	3/8"	3/32"	Not Rated	Not Rated							5	96466A133	0000
						1 3/4"	3/4"	3/8"	3/32"	Not Rated	Not Rated							5	96466A134	0000




								5/16"-18

								5/8"	7/8"	7/16"	1/8"							Not Rated	Not Rated	5	96466A135	0000
								3/4"	7/8"	7/16"	1/8"							Not Rated	Not Rated	5	96466A136	0000
								1"	7/8"	7/16"	1/8"							Not Rated	Not Rated	5	96466A137	0000
								1 1/4"	7/8"	7/16"	1/8"	Not Rated						Not Rated	5	96466A138	0000
								1 1/2"	7/8"	7/16"	1/8"	Not Rated	Not Rated					5	96466A139	00000
								2"	7/8"	7/16"	1/8"	Not Rated	Not Rated					5	96466A141	00000




										3/8"-16

										1"	1"	17/32"	5/32"	Not Rated	Not Rated			5	96466A142	00000
										1 1/4"	1"	17/32"	5/32"	Not Rated	Not Rated			5	96466A143	00000
										1 1/2"	1"	17/32"	5/32"	Not Rated	Not Rated			5	96466A144	00000