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Oval/Wing Head with 127H Half Grommet

1. Drill Hole in panel

Drill Hole in Panel Drawing
Stud Type Hole Diameter
2351-20, 2351-W20 7/32"
2501-20, 2501-W20 5/16"
2601-20, 2601-W20 3/8"

2. Insert stud and slip grommet over stud.

Insert Stud and Slip on Grommet Drawing

3. Flatten Grommet

Flatten Grommet Drawing with Tooling Identification

The triple-x (xxx) in the tool part number stands for the stud size. I.e., 35, 5, or 6.

Oval/Wing Head Stud using a 127H Half Grommet Retainer Tooling

Installation of the 127H Half Grommet Retainer requires two tools.

The 9916-5-1xxx-BB is used to flatten the grommet against the panel while the 9902-1-1xxx-BB Side C is used to support the stud and panel.

Oval/Wing Head with Retaining Ring or Retaining Spring

1. Drill hole in panel

Drill Hole in Panel Drawing
Stud Type Hole Diameter
2351-20, 2351-W20 7/32"
2501-20, 2501-W20 5/16"
2601-20, 2601-W20 3/8"

2. Insert Stud

Insert Stud in Panel Drawing

3. Using the Block to support the stud, place the mandrel in the cam end of the stud. Place retainer (ring or spring) over the mandrel. Using the tool, push the retainer over the mandrel and stud until it snaps back to its original size at the undercut. Remove the tool and mandrel.

Install Retaing Ring or Retaining Spring with Tooling Identification
The triple-x (xxx) in the tool part number stands for the stud size. I.e., 35, 5, or 6.
Oval/Wing Head Stud using an
1219-R Snap Ring or 1219-24 Retaining Spring Retainer.

The installation of any of these retainers requires two tools.

The 9906-RS-xxx-BB is used to push the retainer over a Tapered Mandrel (included) and over the cam end of the stud until it reaches the undercut. Once the retainer reaches the undercut, it snaps back to its original size and prevents the stud from coming out of the panel. The 9902-1-1xxx-BB Side C is used to support the stud and panel while the retainer is attached.

Oval/Wing Head with 1271 Full Grommet

Full Grommet being Absorbed by gasket

1271 Retainer wall thickness is absorbed by gasket, interposed panel, or by dimpled support.

Full Grommet being absorbed by counterbore

Underside of panel hole is counter bored to depth equal to 1271 Retainer wall thickness.

Stud Size Dim. A* Dim. 
D		 Dim N
±.005
35 N/A N/A N/A
5 3/8"* " .030"
6 7/16"* " .035"

*If application requires, size hole +.005/+.010 larger than Dim. A

Note: Dimpled panels require dimpled supports.

1. Insert Grommet in Panel Hole 2. Set Grommet 3. Insert Stud
Insert Grommet Drawing Set Grommet Drawing with Tooling Identification Insert Stud Drawing
4. Clinch Grommet   Stud Removal
Clinch Grommet Drawing with Tooling Identification To order installation tools as a set use Part Number: 9920-1-xxx-BB An installed 1271 or 1276 grommet may be removed by shearing off its underside flange with a staking tool.
Stud Removal Drawing with Tooling Identification

Removal tools are not part of the set and must be ordered separately.

Oval Head Stud using a 1271 Full Grommet Retainer
Installation of a 1271 Full Grommet Retainer is a multi-step process and requires several different tools.
  1. A 9916-1-1xxx-BB is used to set the grommet in the hole while a 9902-2-1xxx-BB is used to support the panel and grommet for the set operation.
  2. A 9916-3-1xxx-BB is used to clinch the grommet around the stud while a 9902-1-1xxx-BB Side C is used to support the stud and panel.