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KNB Series
Unit of Measure

Insert Type

N/A Blind End, Lightweight

Material

N/A Chrome Moly Steel, Type 4140 per MIL-S-5626 or Type 8740 per AMS 6322, 160 KSI Minimum Tensile Strength

Finish Description

N/A Cadmium Plate per QQ-P-416, Type II, Class 2

Lube Description

N/A Dry Film Lubricant per AS5272, Type 1

Internal Thread Lock

N/A No

Internal Thread Size

N/A 0.4375-20 UNJF-3B

External Thread Size

N/A 0.5625-12 UNC-2A

Modified Minor Diameter

N/A Yes

Shear Engagement Area (in²) Ref.

N/A 0.5665

L ±.010

N/A 0.870

A (Ref.)

N/A 0.410

Internal Thread Depth Min.

N/A 0.56

External Thread Length ±.015

N/A 0.56

C'Bore Depth ±.010

N/A 0.070

Tap Drill Diameter

N/A 0.521 / 0.515

C'Sink Diameter (+0.010/-0.000)

N/A 0.572

Thread Tap Size

N/A 0.5625-12 UNC-2B

Thread Tap Min Depth

N/A 0.62

Tool Part Number

N/A TD 720L

Removal Drill Depth ±.010

N/A 0.1875

Removal Drill Size

N/A 0.4687