“Threads Won’t Engage?”

Measure your pole’s inner hole with a caliper. It must be ≈23.0 mm. Verify pole’s thread pitch is 1.25 mm by measuring 5 peaks (divide by 5). Clear any burrs or debris inside before re-tapping.

Connector Feels Loose?

Check your pole’s inner hole—if >23.2 mm, it will be loose. Ensure pole wall is ≈1.2 mm. Measure connector OD; it should be 23.0 ± 0.1 mm. If < 22.8 mm, replace with correct size.

Howdia 1 2mm 0 047 Coarse Thread Connectors For 25

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🔩 Upgrade your vintage shelves with precision and style!

SET OF FOUR CONNECTORS - Four connectors per pack to upgrade or maintain multiple shelving poles with ease and consistency.
PRECISION ENGINEERED FIT - Specifically designed for 1" OD poles with 1.25mm coarse threads and 23mm holes—no guesswork, just perfect compatibility.
DURABLE ZINC PLATED STEEL - Crafted from high-strength carbon steel with rust-resistant plating for long-lasting, upscale shelf support.
LEGACY SHELF COMPATIBILITY - Ideal for older Costco Seville Classics (2005-2006) and standard 1" OD metal racks—keep your vintage setup flawless.
CLEAR SIZE CONFIRMATION REQUIRED - Avoid returns by confirming your pole specs—ensures you get the exact fit for your coarse-threaded shelving poles.

The HOWDIA 1.25 mm Coarse Thread Connectors are premium zinc-plated carbon steel fasteners designed exclusively for 1" outside diameter wire shelving poles with 23mm holes and 1.2mm wall thickness. Perfectly compatible with older Costco Seville Classics shelves and similar standard racks, these connectors provide durable, rust-resistant support in a convenient 4-pack, ensuring a secure and professional shelving upgrade.

Reviews

T**P

Costco Trinity shelves

Works with 1" diameter Costco Trinity shelves. However, advise wearing protective gloves when assembling because there may be metal burrs still intact.

25.07.2025

S**E

Works great

Used them for my metal racks I bought at Costco when I couldn’t find the connections. Cheaper than the replacement online and worked perfect!

4.07.2025

A**R

Works on Costco Trinity wire rack poles

These replacements fit the Trinity wire rack poles that are sold at Costco. Used to connect the upper and lower pole sections together.

7.08.2025

W**S

Doesn't fit

Literally the only size I could find on Amazon. I have the standard black wire racks you find on here, in Home Depot, and Lowes. I didn't buy some weird racks with some weird sizes. Not paying for this. Rip off. Can't find any other size. Makes no sense.

31.08.2024

K**M

Too small for the shelving pole.

I measured the inner diameter of where the 2 connectors need to meet, and the overall diameter of the pole (1 inch). Maybe I don't understand the conversion or how to measure, but these were too small at the threads. It was perfect at the point where to stopped the adapter from sliding into the pipe, just not to thread them into place.Had to return them because of this.

4.02.2022

N**S

Perfect fit

Why did you pick this product vs others?:Perfect fitFit:Perfect

20.06.2025

S**C

Good product

Item fit perfect and works well on the wire shelf but we actually didn’t end up needing them. Kept them since they were not expensive and at some point I might need them.

23.01.2025

J**T

Worked

4.11.2021

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₱1161

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Sold byAmazon PhilippinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Manufacturer	Gizhome
Part Number	A120-1DC2
Item Weight	0.81 ounces
Package Dimensions	4.54 x 1.8 x 0.3 inches
Item model number	A120-1DC2
Is Discontinued By Manufacturer	No
Style	Classic
Material	Steel
Special Features	Rust Resistant
Batteries Included?	No
Batteries Required?	No

HOWDIA 1.2mm/ 0.047" Coarse Thread Connectors for 25.4mm/ 1" Outside Diameters Wire Shelving Poles with 23.0 MM Hole and 1.2 MM Wall Thickness, 4-Pack

Description

Specifications

Reviews

Common Questions