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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 # AER25B271
Part # AER25B271, 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
.211 - .271
in
Identification Mark
2 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
Alloy No. 260 Brass
Standard Finish
None - bright as machined
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PennEngineering® (Atlas®)
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