Hobson BS66PC0250050 1/4" x 1/2" UNC Nylon Hex Head Set Screw, Nylon, Natural
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The Hobson UNC nylon hex head set screw is a nylon hex head screw with a UNC thread, fitted into a tapped hole or through a hole with a nut (natural nylon). This page lists 11 items: 1/4" to 1/2", in lengths from 1/2" to 1".
The supplier description gives size, length, form and pack only: no strength, temperature or chemical resistance figures are published for these nylon items.
The Hobson acronym list defines UNC as Unified National Coarse Thread and TPI as threads per inch. The table gives the threads per inch from the Hobson thread table, for the sizes it lists (manufacturer-stated).
Pack quantity is shown for each item in the table.
Where this product is used
- Fitted into a tapped hole, or through a hole with a nut, where a nylon screw is wanted instead of a metal one
- Replacing a nylon hex head screw of the same thread form, diameter and length
Features
- 11 items: 1/4" to 1/2"
- UNC thread, threads per inch shown in the table
- Natural nylon
- Length 1/2" to 1"
Common specifications
| Specification | Detail |
|---|---|
| Sizes | 1/4" to 1/2" |
| Lengths | 1/2" to 1" |
| Thread | UNC |
| Head | Hex head |
| Material | Nylon |
| Colour | Natural |
Key specifications
| Model | Size | Threads per inch | Supplied as |
|---|---|---|---|
| BS66PC0250050 | 1/4" x 1/2" | 20 TPI (manufacturer-stated) | Pack of 100 |
| BS66PC0250075 | 1/4" x 3/4" | 20 TPI (manufacturer-stated) | Pack of 100 |
| BS66PC0250100 | 1/4" x 1" | 20 TPI (manufacturer-stated) | Pack of 100 |
| BS66PC0310050 | 5/16" x 1/2" | 18 TPI (manufacturer-stated) | Pack of 100 |
| BS66PC0310075 | 5/16" x 3/4" | 18 TPI (manufacturer-stated) | Pack of 100 |
| BS66PC0310100 | 5/16" x 1" | 18 TPI (manufacturer-stated) | Pack of 50 |
| BS66PC0370050 | 3/8" x 1/2" | 16 TPI (manufacturer-stated) | Pack of 100 |
| BS66PC0370075 | 3/8" x 3/4" | 16 TPI (manufacturer-stated) | Pack of 25 |
| BS66PC0370100 | 3/8" x 1" | 16 TPI (manufacturer-stated) | Pack of 25 |
| BS66PC0500075 | 1/2" x 3/4" | 13 TPI (manufacturer-stated) | Pack of 20 |
| BS66PC0500100 | 1/2" x 1" | 13 TPI (manufacturer-stated) | Pack of 20 |
Selecting the right option
Choose the thread form first: the screw and the nut or tapped hole must match in thread form, diameter and pitch. Sizes are nominal diameters in inches; compare the threads per inch in the table with your nut or tapped hole. Length is measured from under the head to the end of the screw.
Related products
Related items: Hobson Metric Nylon Hex Head Set Screw, Natural, M3 to M24 and Hobson Metric Nylon Hex Head Set Screw, Natural, M3 to M24.
Resources
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1/2 / 1
Model Number: BS66PC0500100
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1/4 / 1
Model Number: BS66PC0250100
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3/8 / 1
Model Number: BS66PC0370100
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5/16 / 1
Model Number: BS66PC0310100
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1/4 / 1/2
Model Number: BS66PC0250050
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3/8 / 1/2
Model Number: BS66PC0370050
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5/16 / 1/2
Model Number: BS66PC0310050
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1/2 / 3/4
Model Number: BS66PC0500075
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1/4 / 3/4
Model Number: BS66PC0250075
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3/8 / 3/4
Model Number: BS66PC0370075
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5/16 / 3/4
Model Number: BS66PC0310075

