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Unit of Measure

SAE port number (REF)

 N/A AS1300-20

T thread, Class-3B Thread size

 N/A 1.3125-18 UNJEF

T thread, Class-3B Controlled minor dia

 N/A 1.2599-1.2629

A - MIN

 N/A 1.795

B - MIN

 N/A 1.980

C

 N/A 1.750-1.753

D

 N/A 1.387-1.389

E

 N/A 0.130-0.140

F

 N/A 0.195-0.200

G

 N/A 0.375-0.380

H (MIN Full Thread)

 N/A 0.838

J (No. of Teeth)

 N/A 56

K (MIN)

 N/A 0.093

Porting tool No. REF

 N/A RPT20

Serration Broach Tool - Hand Held Impact Type

 N/A RFOPB5020

Serration Broach Tool - Hand Held Non-Impact Type

 N/A RFOPB5020HDB

Serration Broach Tool - EDM Type

 N/A RFOPB5020ED2

Serration Broach Tool - Wobble Type

 N/A RFOPB5020WB

N/A UNLESS OTHERWISE SPECIFIED
1. THE DRILL AND PORTING TOOL METHOD OF PREPARING THE MACHINED CAVITY IS MANDATORY. DRILL .015-.030 SMALLER THAN CONTROLLED MINOR DIA SPECIFIED: THE PORTING TOOL WILL SIZE THE MINOR DIA AND PROVIDE BALANCE OF CAVITY CONFIGURATION READY FOR BROACHING SERRATION. USE OF PORTING TOOL AND BROACH TOOL SPECIFIED IS MANDATORY TO PROVIDE PROPER PORT CONFIGURATIONS.
2. AFTER SERRATIONS ARE BROACHED, CHIP REMOVAL IS REQUIRED.
3. THE MINIMUM BOSS DIA "B" AND BOSS LENGTH "H" SHOWN ARE SATISFACTORY FOR USE IN MATERIALS THAT EXHIBIT A MINIMUM SHEAR STRENGTH OF 26KSI AND AS SPECIFIED IN APPLICABLE HFS "RECOMMENDED DESIGN PRACTICES".