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4639-5 or 4639-5W Type
Self-Ejecting Fastener and
4639-19 Type
S-Spring Receptacle

Ejecting Stud and S-Spring 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.

Size 6

Total Material Thickness Stud Length Spring Height Ejecting Stud S-Spring Receptacle
Wing Head Stud
Part Number
Flush Head Stud
Part Number
1-3/8" Spacing
Receptacle Part Number
(Size 6)
.077"-.110" .400" .325" 4639-5W6-400 4639-56-400 4639-196-325
.102"- .135" .400" .300" 4639-5W6-400 4639-56-400 4639-196-300
.127"- .160" .400" .275" 4639-5W6-400 4639-56-400 4639-196-275
.152"- .185" .400" .250" 4639-5W6-400 4639-56-400 4639-196-250
.177"- .210" .400" .225" 4639-5W6-400 4639-56-400 4639-196-225
.202"- .235" .500" .300" 4639-5W6-500 4639-56-500 4639-196-300
.227"- .260" .550" .325" 4639-5W6-550 4639-56-550 4639-196-325
.252"- .285" .500" .250" 4639-5W6-500 4639-56-500 4639-196-250
.277"- .310" .500" .225" 4639-5W6-500 4639-56-500 4639-196-225
.302"- .335" .550" .250" 4639-5W6-550 4639-56-550 4639-196-250
.327"- .360" .550" .225" 4639-5W6-550 4636-56-550 4639-196-225

Size 5

Total Material Thickness Stud Length Spring Height Ejecting Stud S-Spring Receptacle
Wing Head Stud
Part Number
Flush Head Stud
Part Number
1" Spacing
Receptacle Part Number
(Size 5)
.077"-.110" .400" .325" 4639-5W5-400 4639-55-400 4639-195-325
.102"- .135" .400" .300" 4639-5W5-400 4639-55-400 4639-195-300
.127"- .160" .400" .275" 4639-5W5-400 4639-55-400 4639-195-275
.152"- .185" .400" .250" 4639-5W5-400 4639-55-400 4639-195-250
.177"- .210" .400" .225" 4639-5W5-400 4639-55-400 4639-195-225
.202"- .235" .500" .300" 4639-5W5-500 4639-55-500 4639-195-300
.227"- .260" .550" .325" 4639-5W5-550 4639-55-550 4639-195-325
.252"- .285" .500" .250" 4639-5W5-500 4639-55-500 4639-195-250
.277"- .310" .500" .225" 4639-5W5-500 4639-55-500 4639-195-225
.302"- .335" .550" .250" 4639-5W5-550 4639-55-550 4639-195-250
.327"- .360" .550" .225" 4639-5W5-550 4636-55-550 4639-195-225