Thread typeCoarse
Drill size23/64"
Min. full thread depth1/2"
Power driver4ZE54
Wall typeHeavy Wall
System of measurementImperial
MaterialStainless Steel
External classClass 2A
Internal classClass 2B
Tensile strength89900 psi
HardnessRockwell Brinell 160
GradeGrade 303
Insert diameter7/16"
Minimum installation depth1/2"
Compatible materialMetal
Drill bit sizeU
Display qty5
Compatible tap size7/16"-14
Brinell hardness160
FeaturesPre Applied Adhesive Activates On Installation, Vibration Resistant
SeriesE-Z LOK Series
Installation methodBolt And Jam Nut, Drive Tool, Screwdriver
Compatible with grainger part number4ZE54
FinishPlain
Internal thread fit2B
Material grade/class18-8
External thread fit2A
Maximum hole diameter0.368"
Full cure time72 hrs.
BrandEZ Lok
DesignHeavy Wall
Manufacturers part number303-4
DescriptionInsert for Metal
Package quantity5
Threading typeCoarse
Alloy303
StyleImperial
Installed length0.437"
Thread spacingCoarse
Size1/4-20
Internal thread size1/4-20
External thread size7/16-14
For use inMetal
Tap size (in)7/16-14
Outside thread (in)7/16-14
Installed length (in)0.44
Inside thread (in)1/4-20
Applicable materialsMetal
Minimum full thread depth0.5
Internal thread1/4-20
Sub-categoryStandard Wall
Insert styleSolid Wall
E-z lok p/n303-4
Hole sizeU
External thread7/16-14
Tap size7/16-14
Installation tool p/n500-3
Manufacturer part number303-4
Maximum external thread size7/16-14
Maximum internal thread size1/4-20
Thread densityCoarse
CoatingUse-Activated Epoxy
Compatible drive tool500-3