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Countersunk Head Threaded Insert - Closed End Keyless - Unified
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Countersunk Head Threaded Insert - Closed End Keyless - Unified
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Part # AECH25B331
Part # AECH25B331, Countersunk Head Threaded Insert - Closed End Keyless - Unified
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Designed for high load applications. Countersunk feature allow fastener to be installed flush with sheet surface.
Both UNC and UNF threads available in No. 10 and larger thread sizes. Check for availability of other grip ranges and designs.
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Specifications
Thread Size
1/4-20
Grip Range
.271 - .331
in
Identification Mark
3 Rad.
B Ref.
.529
in
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C Max.
.089
in
øD + .000 - .004
.332
in
E Max.
.382
in
F + .005 -.000
.054
in
J Ref.
.750
in
K Ref.
.435
in
Install Drill Size Ref.
Q
Install Hole Size Min.
.332
in
Install Hole Size Max.
.338
in
Pull Up Factor
.095
in
Weight per 1000
16.9
lb
Fastening
Installed
Thread Specification
3B per ASME B1.1
Standard Material
4037 Alloy Steel
Standard Finish
Cadmium Plate - .0003” minimum thickness per SAE AMS-QQ-P-416 Class 2, Type II
CAD Supplier
PennEngineering® (Atlas®)
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