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KNH, MS51831, NAS1395 Series
Unit of Measure

Insert Type

Heavy Duty

Material

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

Finish Description

Cadmium Plate per AMS-QQ-P-416, Type II, Class 3

Lube Description

Dry Film Lubricant per AS5272, Type 1

Internal Thread Lock

No

Internal Thread Size

0.1900-24 UNJC-3B

External Thread Size

0.3750-16 UNC-2A

Modified Minor Diameter

0.320/0.312

Shear Engagement Area (in²) Ref.

0.1901

C DIA ±.005

0.196

C'Bore Depth ±.010

0.070

L ±.010

0.312

Tap Drill Diameter

0.336/0.331

C'Sink Diameter
+.010
-.000

0.385

Thread Tap Size

0.3750-16 UNC-2B

Thread Tap Depth Min

0.370

Installation Tool Part Number

THD 1024L

Removal Drill Size

0.281

Drill Depth ±.010

0.1250