Welding Pins | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Length Length

	Diameter Diameter

	Material Material

Steel

Stainless Steel

	Thread Size Thread Size

4-40
6-32
8-32
10-24
10-32
1/4"-20
5/16"-18
3/8"-16
1/2"-13
M3.5
M4

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Base Thickness Base Thickness

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Point Diameter Point Diameter

	Projection Location Projection Location

Below Head

Above Head

	Base Diameter Base Diameter

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

REACH Compliant

	Body Shape Body Shape

Round

Hex

	Head Diameter Head Diameter

	Individual/Set Individual/Set

Individual

Set

	Tensile Strength Tensile Strength

60,000 psi

65,000 psi

Not Rated

	Thread Type Thread Type

UNC

UNF

	Thread Spacing Thread Spacing

Coarse

Fine

	Component Component

Threaded Stud

	Thread Fit Thread Fit

Class 2A

Class 3A

Class 6g

	Body Texture Body Texture

Smooth

Knurled

	Taper Length Taper Length

	Specifications Met Specifications Met

261 Products

Fasteners

Surface-Mount Weld-On Pins

Weld these pins directly to a surface —no mounting hole required.

Through-Hole Weld-On Pins

Pass these pins through a mounting hole and weld the head to the surface.

Steel Right-Angle Weld Studs

Weld these studs to uncoated steel surfaces.

Stainless Steel Right-Angle Weld Studs

These studs have good chemical resistance. Weld them to stainless steel surfaces.

Weld Studs

Pass these studs through a hole and weld them in place.

Weld-On Stud Anchors for Wet Concrete

These stud anchors strengthen the parts of buildings where steel framing connects to concrete. They’re also known as Nelson studs.

Hole-Alignment Pins

Line up holes by driving these pins through existing rivet, pin, and bolt holes in multiple pieces of metal. Alternatively known as lineup taper punches.

Double-Taper Hole-Alignment Pins

When one side wears out, use the other one. Also known as barrel drift pins.

No-Strike Hole-Alignment Pins for Flange Bolt Holes

Turn the pin and the tapered shaft forces the two holes into alignment.

Impact-Resistant Hole-Alignment Pins

Often called bull pins, these pins are designed to resist mushrooming caused by repeated pounding.

No-Strike Hex Head Alignment Pin Sets

The tapered shaft of these pins eliminates the need for hammering and prying when aligning flange bolt holes.

Stud Welding Systems

Weld threaded studs and pins to steel and stainless steel without damaging the opposite side of the material. This process uses heat from resistance to an electrical current.