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
Stud Type Block Part Number Tool Part Number
2351-20, 2351-W20 9902-1-135-BB 9916-5-135-BB
2501-20, 2501-W20 9902-1-15-BB 9916-5-15-BB
2601-20, 2601-W20 9902-1-16-BB 9916-5-16-BB

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
Stud Type Block Part Number Tool Part Number
2351-20, 2351-W20 9902-1-135-BB 9906-RS-35-BB
2501-20, 2501-W20 9902-1-15-BB 9906-RS-5-BB
2601-20, 2601-W20 9902-1-16-BB 9906-RS-6-BB

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 Type Dim. A* Dim. D Dim N ±.005
2501-20, 2501-W20 3/8"* 19/32" .030"
2601-20, 2601-W20 7/16"* 21/32" .035"

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

Note: Dimpled panels require dimpled supports.

1. Insert Grommet in Panel Hole Insert Grommet Drawing
2. Set Grommet
Stud Type Block Part Number Topl Part Number
2501-20, 2501-W20 9902-2-15-BB 9916-1-15-BB
2601-20, 2601-W20 9902-2-16-BB 9916-1-16-BB
Set Grommet Drawing with Tooling Identification
3. Insert Stud Insert Stud Drawing
4. Clinch Grommet
Stud Type Block Part Number Topl Part Number
2501-20, 2501-W20 9902-1-15-BB 9916-3-15-BB
2601-20, 2601-W20 9902-1-16-BB 9916-3-16-BB
Clinch Grommet Drawing with Tooling Identification

To order installation tools as a set use Part Number:

Stud Type
Tool Set*
Part Number
2351-20, 2351-W20 9920-135-BB
2501-20, 2501-W20 9920-15-BB
2601-20, 2601-W20 9920-16-BB

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

Stud Removal
An installed 1271 or 1276 grommet may be removed by shearing off its underside flange with a staking tool.
Stud Type Block Part Number Tool Part Number
2351-20, 2351-W20 9902-1-135-BB 9919-A-35-BB
2501-20, 2501-W20 9902-1-15-BB 9919-A-5-BB
2601-20, 2601-W20 9902-1-16-BB 9919-A-6-BB
Stud Removal Drawing