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KNH, MS51831, NAS1395 Series
Unit of Measure

Insert Type

Heavy Duty

Material

A286 CRES per AMS 5731, AMS 5732, AMS 5734, or AMS 5737, 160 KSI Minimum Tensile Strength

Finish Description

Silver Plate per AMS 2410

Lube Description

None

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