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KNH, MS51831, NAS1395 Series
Unit of Measure

Insert Type

N/A Heavy Duty

MS part number

N/A MS51831-102

Material

N/A 303 CRES per AMS 5640 or ASTM-A-582, or 303SE per AMS 5640, AMS 5738 or ASTM-A-582

Finish Description

N/A Passivate per AMS 2700

Lube Description

N/A None

Internal Thread Lock

N/A No

Internal Thread Size

N/A 0.2500-20 UNJC-3B

External Thread Size

N/A 0.4375-14 UNC-2A

Modified Minor Diameter

N/A 0.383/0.375

Shear Engagement Area (in²) Ref.

N/A 0.2842

C DIA ±.005

N/A 0.257

C'Bore Depth ±.010

N/A 0.070

L ±.010

N/A 0.375

Tap Drill Diameter

N/A 0.401/0.396

C'Sink Diameter
+.010
-.000

N/A 0.447

Thread Tap Size

N/A 0.4375-14 UNC-2B

Thread Tap Depth Min

N/A 0.430

Installation Tool Part Number

N/A THD 420L

Removal Drill Size

N/A 0.344

Drill Depth ±.010

N/A 0.1875