Flange Aligner Pins | McMaster-Carr

	Individual/Set Individual/Set

Individual

Set

	System of Measurement System of Measurement

Inch

Metric

	Overall Length Overall Length

	Material Material

Steel

Aluminum

	Finish Finish

Black Oxide

Chrome Plated

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

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant

	Head Style Head Style

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

REACH Compliant

	For Minimum Flange Hole Diameter For Minimum Flange Hole Diameter

	For Bolt Hole Diameter For Bolt Hole Diameter

	Mount Type Mount Type

Press Fit

Threaded Stud

Screw

	Taper Length Taper Length

	Shoulder Diameter Shoulder Diameter

	Overall Height Overall Height

	Point Diameter Point Diameter

	Diameter Diameter

1 1/16"

1 1/4"

	For Maximum Flange Hole Diameter For Maximum Flange Hole Diameter

	ID ID

	For Pin Head Diameter For Pin Head Diameter

	For Pin Head Style For Pin Head Style

	Shoulder Height Shoulder Height

	Level Orientation Level Orientation

Vertical

Horizontal

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163 Products

Hole-Alignment 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.

Pipe Flange Aligners

Pipe Flange Aligner Pins

Insert a pair of these nut-and bolt pins into adjacent flange holes and tighten to align flanges before connecting two pipes.

Pipe Flange Aligners with Protractor

Line up two pipe flanges and determine pipe angle with the included nut-and bolt pins, level, and protractor.

Pipe Flange Aligner Pins with Horizontal Level

Ensure horizontal alignment of pipe flanges with a level rod that runs between two alignment pins.

Stepped Pipe Flange Aligner Pins

Each step on these aligner pins matches common bolt holes on pipe flanges, so they're more precise than conical aligner pins and don’t require nuts. Press the pair of pins into mated flanges to make sure the flanges are aligned.

Locating Pins

Mating Locating Pins and Hole Liners

Maintain consistent alignment in mating parts by installing a pin in one part and a liner in the other.

Shoulder-Style Locating Pins

The shoulder provides a consistent height reference point and keeps the pin from being pressed through the fixture.

Threaded Locating Pins

Screw the shank into a threaded hole for quick installation and removal.

Removable Locating Pins

A slightly undersized shank makes these pins easy to install and replace. Also known as slip-fit and lock-screw locating pins, they are held in place by a separate lock screw.