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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 ASTM B 700

Lube Description

None

Internal Thread Lock

No

Internal Thread Size

0.5625-18 UNJF-3B

External Thread Size

0.8125-16 UN-2A

Modified Minor Diameter

0.752/0.744

Shear Engagement Area (in²) Ref.

1.2493

C DIA ±.005

0.580

C'Bore Depth ±.010

0.100

L ±.010

0.812

Tap Drill Diameter

0.771/0.765

C'Sink Diameter
+.010
-.000

0.822

Thread Tap Size

0.8125-16 UN-2B

Thread Tap Depth Min

0.940

Installation Tool Part Number

THD 918L

Removal Drill Size

0.719

Drill Depth ±.010

0.1875