The Shelving Store
Shelving Inc.
Threaded Insert for Post Bottom (SI-POO-TP)
Product Code: SI-POO-TP
Included in all of our round chrome posts, these inserts allow for effortless addition and removal of our different wire shelving accessories. If lost or damaged, they can be individually bought right here! Optimized for Shelving Inc. brand posts, designed with 12 threads per half-inch.
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Product Details
This is a standard specification describing the size and spacing of a screw or bolt thread. Here's how it works:
- 1/2" - The nominal (major) diameter of the thread. The outside diameter of the external thread is approximately half an inch.
- 12 - The number of threads per inch (TPI). There are 12 complete threads in one inch of length.
- Pitch (Derived Value) - The distance from one thread crest to the next. For 1/2"-12:
- Pitch = 1 ÷ 12 inch
- Pitch ≈ 0.0833 inches per thread
- Value does not come out evenly because it's defined in inches, but was designed using nonstandard measurement. We are converting it.
- In metric terms, the thread is approximately Ø12.7 × 2.12 mm.
Assembly

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