Injection/Extrusion Screw Replacement Cheat Sheet

Screw Size	New Screw Clearance	Worn Screw Clearance	Max Wear Clearance

½”	.003 – .004”	.008 – 009”	.012-.015”
1”	.003 – .004”	.018”	.020”
1 – 1/2”	.005 – .008”	.020”	.025”
2 – 1/2”	.007 – .010”	.021”	.030”
3 – 1/2”	.010 – .012”	.030”	.036”
4 – 1/2”	.010 – .013”	.030”	.039”
6”	.013 – .016”	.039”	.048”
8”	.016 – .019”	.048”	.057”
10”	.020 – .025”	.060”	.075”
25mm	.003-.005	.013-.014	.019-.020
30mm	.003-.005	.014-.015	.021-.022
40mm	.004-.005	.014-.015	.022-.023
60mm	.005-.006	.016-.017	.028-.029
80mm	.006-.007	.019-.020	.034-.035
90mm	.009-.010	.021-.022	.036-.037
100mm	.009-.010	.024-.025	.041-.042
120mm	.012-.013	.030-.031	.049-.050
140mm	.014-.015	.034-.035	.055-.056