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Stud Panel Preparation
for Ring Head Studs

Note: The installation procedures for the Ring Head Studs are identical to the installation procedures for the Oval Head Studs except that the Ring Head Studs are flat and use a Flat Surface Plate in place of the Support Block (9902-1-1xxx-BB)

Note: Support Preparation is covered under Receptacle Installation

Stud Panel Preparation With 1219-R, 127P, 127H, and 1219-24

The drawings below all show the stud retainer being absorbed by either a counterbore in the panel, or by the space created through use of a gasket or interposed sheet between the panel and support. If neither option is feasible, the retainer thickness can also be absorbed by either the support or the receptacle when utilizing a 1219-L, 1218-P, 1219-QC4 or 1219-PS receptacle.

1219-R

Snap Ring

Snap Ring Retainer being absorbed

127P

Push-on Grommet

Plastic Grommet being absorbed

127H

Flattened Half Grommet

Aluminum Grommet being Absorbed

1219-24

Retaining Spring

Retaining Spring being absorbed

Standard Panel hole
for 1219-R, 127P, 127H,
and 1219-24

Gasket or Interposed Sheet

The hole should be sufficiently larger than the outer diameter of the stud retainer in order to allow free entry of the retainer

Oversize Panel Hole
For 127P and 127H 		An oversized panel hole allows the stud to float which can compensate for panel-to-support misalignment. Do not use with 1219-R snap ring retainers.
Stud
Size		 Hole Diameter
+ .010
-.000		 Stud
Size		 Hole Diameter
+ .010
-.000
3 3/16" 3 7/32"
4 1/4" 4 5/16"
5 5/16" 5 3/8"
65 13/32 65 15/32"

Retainer Installation with 1219-R, 127P, 127H, and 1219-24

  1. Place the retainer on mandrel as shown.
  2. Align ring or spring ends so that they will miss the stud cam.
  3. Place mandrel in end of stud cam.
  4. Place tool over mandrel
  5. Push retainer until it is seated in stud undercut.
 9906-RS HAND TOOL: Spreads the inside diameter of retainers over stud shanks and then pushes them into stud undercuts.

9902-1-1 BLOCK: Nests stud heads during installation. (Any flat block may be used for 122J-R ring head studs.)

127P

Push-on Grommet

 1219-R

Snap Ring

Snap Ring Installation with Tooling Identification

1219-24

Retaining Ring

Retaining Spring Installation with Tooling Identification

Ring Head Stud using a 127P Plastic Half Grommet,
1219-R Snap Ring or 1219-24 Retaining Spring Retainer.
The installation of any of these retainers requires two tools.

The 9906-RSxxx 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.

A Flat Surface Plate is used to support the stud and panel while the retainer is attached.

127H

Flattened Half Grommet
Aluminum Half Grommet Clinching with Tooling Identification Aluminum Half Grommet Installation Drawing
Standard Hole: Small Diameter Faces Panel 		Aluminum Half Grommet Installation Oversized Hole Drawing
Oversize Hole: Large Diameter Faces Panel
Ring Head Stud using a 127H Half Grommet Retainer and a Dimpled Support
Installation of the 127H Half Grommet Retainer requires one tool.

The 9916-5-1xxx-BB is used to flatten the grommet against the panel while a Flat Surface Plate is used to support the stud and panel.

In this case, the 127H Half Grommet Retainer is flattened against the underside of the panel and can cause a gap between the panel containing the stud and the support containing the receptacle. Dimpling the support will allow the panel and support to come into direct contact by allowing the retainer to fit in the dimple.

The triple-x (xxx) in the tool part number stands for the stud size number: i.e., 3, 4, 5, or 7 (for 65).

Stud Panel Preparation 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
3 7/32"* 11/32" .020"
4 5/16"* 15/32" .030"
5 3/8"* 19/32" .035"
65 1/2" 25/32" .045"

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

Note: Dimpled panels require dimpled supports.

Retainer Installation with 1271 Full Grommet

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.

Ring 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 Flat Surface Plate is used to support the stud and panel.

Retainer installation with 127S-F Thick Panel Grommet

1. Using diameter specified in the table, make the hole in the panel for light press fit grommet. I loose fit is needed, size the hole diameter +.005/+.010"
Stud Size Hole Dia.
3 .219"
4 .313"
5 .375"
2. Press grommet/stud assembly into hole Note: This stud panel hole permits use of S-Spring receptacles without a dimpled stud hole in support.
3. Flare grommet using 9906-A-xxx-BB flaring tool while a 9902-1-1xxx-BB is used to support the panel, stud, and grommet. 4. Flatten grommet using 9916-3-1xxx-BB tool while a 9902-1-1xxx-BB is used to support the panel, stud, and grommet.
Ring Head Stud using a 127S-A Thick Panel Grommet Retainer
Installation of a 127S-A Thick Panel Grommet Retainer is a multi-step process and requires several different tools.
  1. A 9906-A-xxx-BB is used to flare the grommet away from the stud while a Flat Surface Plate is used to support the panel, stud, and grommet.
  2. A 9916-3-1xxx-BB is used to clinch the grommet while a Flat Surface Plate is used to support the panel, stud, and grommet.

The triple-x (xxx) in the tool part number stands for the stud size number: i.e., 3, 4, 5, 65.