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Lightweight Keenserts are available in a wide choice of sizes, lengths, and materials for virtually any requirement.

KN Series
Unit of Measure

Specifications

Insert Type

N/A Lightweight Inserts

Material

N/A 303 CRES per AMS 5640 or ASTM-A-582, or 303SE per AMS 5640, AMS 5738 or ASTM-A-582

Finish

N/A Silver Plate per ASTM B700, Type I, Grade A, Class N

Lubricant

N/A None

Internal Thread Lock

N/A No

Internal Thread Size

N/A 0.2500-28 UNJF-3B

External Thread Size

N/A 0.3750-16 UNC-2A

Modified Minor Diameter

N/A 0.320/0.312

Shear Engagement Area (in²) Ref.

N/A 0.2371

C DIA ±.005

N/A 0.257

C'Bore Depth ±.010

N/A 0.070

L ±.010

N/A 0.375

A (Ref.)

N/A 0.330

Tap Drill Diameter

N/A 0.336/0.331

C'Sink Diameter
+.010
-.000

N/A 0.385

Thread Tap Size

N/A 0.3750-16 UNC-2B

Thread Tap Depth Min

N/A 0.430

Installation Tool Part Number

N/A TD 428L

Removal Drill Depth ±.010

N/A 0.1875

Removal Drill Size

N/A 0.281