Howmet Fastening Systems
Howmet Fastening Systems
Phone: Sales +1 800 992 4444
Technical Support +1 310 784 6409
Email: HFSTechSupport@howmet.com
Website: www.hfs.howmet.com
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Miniature Keenserts are for use in electronic and aerospace applications where size and strength are critical.  These inserts may be installed in sheet material as thin as 1/16" providing protrusion of insert is not objectional.  Their pull-out strength exceeds the tensile strength of most Military Standard screws. 

KNC, KNCC, KNCA Series
Unit of Measure

Specifications

Insert Type

 N/A Miniature Inserts

Material

 N/A Chrome Moly Steel (125 KSI 4140)

Finish

 N/A Cadmium Plate per AMS-QQ-P-416, Type I, Class 3 (.0002 minimum)

Lube Description

 N/A Dry Film Lubricant per AS5272, Type 1

Internal Thread Lock

 N/A Yes

Internal Thread Size

 N/A 0.1640-32 UNJC-3B

External Thread Size

 N/A 0.2500-28 UNF-2A

Modified Minor Diameter

 N/A Yes

Shear Engagement Area (in²) Ref.

 N/A 0.0669

L ±.010

 N/A 0.220

T ±.010

 N/A 0.175

Tap Drill Diameter

 N/A 0.231/0.227

C'Sink Diameter
+.010
-.000

 N/A 0.255

Thread Tap Size

 N/A 0.2500-28 UNF-2B*

Thread Tap Depth Min

 N/A 0.210

Installation Tool Part Number

 N/A TKNC 08

Removal Drill Size

 N/A #8 (0.199)

Drill Depth ±.010

 N/A 0.1250