Flange Two Hole Pin Set 1-1/8ft & 1-5/8ft Alignment Pins - Easy Fit

Our review looks at the 4 Pcs Flange Two Hole Pin set, a practical alignment tool for installers and fabricators who need a simple, durable way to hold flanges and pipe fittings in place. The bottom line: this set is for anyone who wants a no-frills solution to line up bolt holes quickly and securely, with two diameters included to suit a broad range of bolt hole sizes. The removable threads and lightweight stainless construction make the pins easy to install and adjust, saving time during flange assembly and reducing the need for makeshift alignment aids.

Key Features

• Dual diameters: Includes 1-1/8' and 1-5/8' pins so installers can match common bolt hole ranges without buying multiple sets.
• Bolt hole compatibility: The 1-1/8' pins suit bolt holes from about 3/8' to 1.0' and the 1-5/8' pins suit roughly 1/2' to 1-1/2', covering many flange standards.
• Thick flange support: Designed to work with flange thicknesses up to 3' to maintain alignment through heavier assemblies.
• Easy installation: Removable threaded ends let you adjust insertion depth quickly so pins adapt to different pipe and flange setups.
• Stainless construction: Corrosion-resistant material provides durability on job sites and in workshop environments.

Who It's For

This set is aimed at plumbers, pipefitters, maintenance technicians, and metal fabricators who frequently assemble flanges and need repeatable alignment without improvised tools. It is especially useful on-site where fast, reliable alignment reduces handling time and keeps pipe runs true during bolting.

Those who should look elsewhere include people needing laser-precise alignment for very tight-tolerance mechanical assemblies, or users who require custom pin sizes not covered by the two included diameters. Also, if you need integrated handling features or specialized coatings, a more advanced alignment tool may be preferable.

Pros & Cons

Pros

• Simple, effective dual-diameter set that fits a range of common bolt hole sizes.
• Lightweight stainless steel construction resists corrosion and holds up in shop or field use.
• Removable threads and ergonomic design make installation and depth adjustment straightforward.

Cons

• Thread quality has mixed feedback from some users, so check threads before critical installs.
• Limited to the two supplied diameters; specialist sizes require different tooling.

Specifications

Product type	Two hole flange alignment pins (set)
Included pieces	4 pcs per set (two 1-1/8' and two 1-5/8')
1st diameter	1-1/8' (for bolt holes ~3/8' to 1.0')
2nd diameter	1-5/8' (for bolt holes ~1/2' to 1-1/2')
Max flange thickness	Up to 3'
Material	Stainless steel
Warranty	6-month warranty for quality issues

Our Verdict

The 4 Pcs Flange Two Hole Pin set is a practical, value-oriented kit for tradespeople who need reliable flange alignment without fuss. It covers two common diameters, handles thick flanges, and is easy to use thanks to removable threads; just be aware of occasional thread quality issues and limited size range. For general pipe and flange work it represents solid value and saves time compared with improvised methods.

Frequently Asked Questions

What bolt hole sizes do these pins fit?
The 1-1/8' pins work with bolt holes around 3/8' to 1.0' and the 1-5/8' pins suit roughly 1/2' to 1-1/2'.

How thick of a flange can these pins handle?
They are designed to work with flange thicknesses up to about 3'.

Is there a warranty?
Yes, the product includes a 6-month warranty covering quality issues.