Self-Piercing Grommets and Washers

“No Hole Needed” Stimpson Self-Piercing Grommets are made from heavier gauge brass than traditional sheet metal grommets and, when set with their matching washers, pierce and set in a single action without the need for a pre-punched hole.

Available in brass, they can also be furnished with a nickel or dull black chemical finish.  The #2 size is also available in 304 stainless steel.  Ideal for use with Stimpson 405 grommet setting machine.

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Self-Piercing Grommet Dimensions

Brass Self-Piercing Grommet Dimensions
Grommet Hole Size Flg. Dia L.U.F. MT
#0SPG 1/4” .550 .165 .015
#1SPG 5/16” .630 .200 .015
#1XLSPG 5/16” .630 .320 .015
#2SPG 3/8” .750 .200 .015
#E2XLSPG 3/8” .750 .500 .012
#3SPG 7/16” .970 .185 .015
E-Series 304 Stainless Steel Self-Piercing Grommet Dimensions
Grommet Hole Size Flg. Dia L.U.F. MT
#E2SPG 3/8″ .750 .200 .010
#E2XLSPG 3/8” .750 .500 .012
L.U.F = Length Under Flange Flg. Dia. = Flange Diameter I.D. = Inside Diameter O.D. = Outside Diameter MT = Metal Thickness

Self-Piercing Washer Dimensions

L.U.F = Length Under Flange Flg. Dia. = Flange Diameter I.D. = Inside Diameter O.D. = Outside Diameter MT = Metal Thickness

Brass Self-Piercing Washer Dimensions
Washer Grommet I.D. O.D. MT
#0SPW #0SPG .337 .575 .011
#1SPW #1SPG .400 .655 .011
#1SPW #1XLSPG .400 .655 .011
#2SPW #2SPG .437 .770 .011
#E2SPW #E2XLSPG .437 .770 .010
#3SPW #3SPG .546 .970 .011
E-Series 304 Stainless Steel Self-Piercing Washer Dimensions
Washer Grommet I.D. O.D. MT
#E2SPW #E2SPG .437 .770 .010
#E2SPW #E2XLSPG .437 .770 .010
Brass Self-Piercing Grommet Dimensions
Grommet #0SPG
Hole Size 1/4″
Flange Diameter .550
Length Under Flange .165
Metal Thickness .015
Grommet #1SPG
Hole Size 5/16″
Flange Diameter .630
Length Under Flange .200
Metal Thickness .015
Grommet #1XLSPG
Hole Size 5/16″
Flange Diameter .630
Length Under Flange .320
Metal Thickness .015
Grommet #2SPG
Hole Size 3/8″
Flange Diameter .750
Length Under Flange .200
Metal Thickness .015
Grommet #E2XLSPG
Hole Size 3/8″
Flange Diameter .750
Length Under Flange .500
Metal Thickness .012
Grommet #3SPG
Hole Size 7/16″
Flange Diameter .970
Length Under Flange .185
Metal Thickness .015
Brass Self-Piercing Washer Dimensions
Washer #0SPW
Grommet Size #0SPG
Inside Diameter .337
Outside Diameter .575
Metal Thickness .011
Washer #1SPW
Grommet Size #1SPG
Inside Diameter .400
Outside Diameter .655
Metal Thickness .011
Washer #1SPW
Grommet Size #1XlSPG
Inside Diameter .400
Outside Diameter .655
Metal Thickness .011
Washer #2SPW
Grommet Size #2SPG
Inside Diameter .437
Outside Diameter .770
Metal Thickness .011
Washer #E2SPW
Grommet Size #E2SPG
Inside Diameter .437
Outside Diameter .770
Metal Thickness .010
Washer #3SPW
Grommet Size #3SPG
Inside Diameter .546
Outside Diameter .970
Metal Thickness .011
Stainless Steel Self-Piercing Grommet Dimensions
Grommet #E2SPG
Hole Size 3/8″
Flange Diameter .750
Length Under Flange .200
Metal Thickness .010
Grommet #E2XLSPG
Hole Size 3/8″
Flange Diameter .750
Length Under Flange .500
Metal Thickness .012
Stainless Steel Self-Piercing Washer Dimensions
Washer #E2SPW
Grommet Size #E2SPG
Inside Diameter .437
Outside Diameter .770
Metal Thickness .010
Washer #E2SPW
Grommet Size #E2XLSPG
Inside Diameter .437
Outside Diameter .770
Metal Thickness .010

Grommeting Machines

The Stimpson hand-operated 405 grommet setting machine is ideal for setting Stimpson Self-Piercing Grommets and Washers. Click on machine for more specific information. (Images not to scale)