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4639-55 or 4639-5W5 Type
Self-Ejecting Fastener and
4639-24945 Type
Weld Plate Receptacle

Ejecting Stud and Weld Plate Receptacle

To order, add up the thickness of the panels being joined together, as shown here. Next, locate the total thickness on the chart. The part number is shown under the Part Number column.

Total Material
 Thickness
Stud Grip Spring Height Ejecting Stud Weld Plate Receptacle
Wing Head Stud
Part Number
Flush Head Stud
Part Number
Weld Plate Part Number
.060"-.100" .400" .335" 4639-5W5-400 4639-55-400 4639-24945-335
.092"-.125" .400" .310" 4639-5W5-400 4639-55-400 4639-24945-310
.117"-.150" .400" .285" 4639-5W5-400 4639-55-400 4639-24945-285
.142"-.175" .500" .360" 4639-5W5-500 4639-55-500 4639-24945-360
.167"-.200" .500" .335" 4639-5W5-500 4639-55-500 4639-24945-335
.192"-.225" .550" .360" 4639-5W5-550 4639-55-550 4639-24945-360
.217"-.250" .550" .335" 4639-5W5-550 4639-55-550 4639-24945-335
.242"-.275" .550" .310" 4639-5W5-550 4639-55-550 4639-24945-310
.267"-.300" .550" .285" 4639-5W5-550 4639-55-550 4639-24945-285