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KNH, MS51831, NAS1395 Series
Unit of Measure

Insert Type

N/A Heavy Duty

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 AMS-QQ-P-416, Type I, Class 3

Lube Description

N/A Dry Film Lubricant per AS5272, Type 1

Internal Thread Lock

N/A No

Internal Thread Size

N/A 0.1640-32 UNJC-3B

External Thread Size

N/A 0.3125-18 UNC-2A

Modified Minor Diameter

N/A 0.256/0.249

Shear Engagement Area (in²) Ref.

N/A 0.1517

C DIA ±.005

N/A 0.172

C'Bore Depth ±.010

N/A 0.040

L ±.010

N/A 0.312

Tap Drill Diameter

N/A 0.276/0.271

C'Sink Diameter
+.010
-.000

N/A 0.323

Thread Tap Size

N/A 0.3125-18 UNC-2B

Thread Tap Depth Min

N/A 0.370

Installation Tool Part Number

N/A THD 0832L

Removal Drill Size

N/A 0.219

Drill Depth ±.010

N/A 0.1250