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KNH, MS51831, NAS1395 Series
Unit of Measure

Insert Type

Heavy Duty

Material

Inconel 718 per AMS 5663, 180 KSI Minimum

Finish Description

Passivate per AMS 2700

Lube Description

Dry Film Lubricant per AS5272, Type 1

Internal Thread Lock

Yes

Internal Thread Size

0.1640-32 UNJC-3B

External Thread Size

0.3125-18 UNC-2A

Modified Minor Diameter

0.256/0.249

Shear Engagement Area (in²) Ref.

0.0945

C DIA ±.005

0.172

C'Bore Depth ±.010

0.040

L ±.010

0.312

A (Ref.)

0.290

Tap Drill Diameter

0.276/0.271

C'Sink Diameter
+.010
-.000

0.323

Thread Tap Size

0.3125-18 UNC-2B

Thread Tap Depth Min

0.370

Installation Tool Part Number

THD 0832L

Removal Drill Size

0.219

Drill Depth ±.010

0.1250