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ST-1200 Line Size 4 - Thick Panel Grommets
Type 127S-A and 127S-F thick panel grommets are supplied attached to their
studs. The bead securing the grommet to the stud is close to the head to allow
maximum retraction of the stud end into the panel. These grommets are offered in
standard lengths, matching common panel thickness with ends extended beyond the
panel, for retention by flaring. Other lengths are available on special order.

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Type 127S-F: Flush heads only |
Type 127S-A: Protruding heads only |
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Stud/Grommet Assembly Callout:
- Determine stud length as directed by instructions provided for the
selected receptacle.
- The 127S-A or 127S-F grommet length (dimension "T") is equal to the panel
thickness plus the grommet end flaring allowance.
- If the panel thickness is greater than "Dimension P" listed in the table,
go to the next larger listing. (For example: For size 4, if the panel is .275"
thick, use Dimension P = .375 in the table.)
- The stud grommet assembly is called out by first stating the stud part
number, followed by "T", followed by the grommet's "T" dimension in
thousandths of an inch. (For example: 121J-450T175)
| Grommet Size |
Dimension "M"
Grommet Diameter |
Dimension "N"
Grommet Wall Thickness |
End Flaring Allowance |
| 4 |
5/16"
(7.95 mm) |
.025"
(.64 mm) |
.075"
(1.91 mm) |
Grommet
Specification |
Dimension "P" |
Dimension "T" |
| (inch) |
(mm) |
(inch) |
(mm) |
| *T175 |
.101 |
2.57 |
.175 |
4.45 |
| *T325 |
.250 |
6.35 |
.325 |
8.26 |
| *T450 |
.375 |
9.53 |
.450 |
11.43 |
| *T575 |
.500 |
12.70 |
.575 |
14.61 |
| *T700 |
.625 |
15.88 |
.700 |
17.78 |
| *T825 |
.750 |
19.05 |
.825 |
20.96 |
* Represents the stud part number (e.g., 121J-450 from the above example).
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