Part # AES25B391, Countersunk Head Threaded Insert - Closed End Keyless

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	Part # AES25B391, Countersunk Head Threaded Insert - Closed End Keyless - Unified

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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Countersunk Head Threaded Insert - Unified 2

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Specifications

Thread Size

1/4-20

Grip Range

.331 - .391 in

Identification Mark

4 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.

Install Hole Size Min.

.332 in

Install Hole Size Max.

.338 in

Pull Up Factor

.095 in

Weight per 1000

17.5 lb

Fastening

Installed

Thread Specification

3B per ASME B1.1

Standard Material

Low Carbon 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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		PEM ATLAS Bulletin

Part # AES25B391, Countersunk Head Threaded Insert - Closed End Keyless - Unified

Thread Size

Grip Range

Identification Mark

B Ref.

C Max.

øD + .000 - .004

E Max.

F + .005 -.000

J Ref.

K Ref.

Install Drill Size Ref.

Install Hole Size Min.

Install Hole Size Max.

Pull Up Factor

Weight per 1000

Fastening

Thread Specification

Standard Material

Standard Finish

CAD Supplier