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Unit of Measure

T thread, Class-3B Thread size

 N/A 0.8750-20 UNJEF

T thread, Class-3B Controlled minor dia

 N/A 0.8278-0.8308

A - MIN

 N/A 1.337

B - MIN

 N/A 1.920

C

 N/A 1.281-1.284

D

 N/A 0.965-0.967

E

 N/A 0.103-0.113

F

 N/A 0.168-0.173

G

 N/A 0.343-0.348

H (MIN Full Thread)

 N/A 0.890

J (No. of Teeth)

 N/A 36

K (MIN)

 N/A 0.073

Porting tool No. REF

 N/A RPT13

Serration Broach Tool - Hand Held Impact Type

 N/A RFOPB5013

Serration Broach Tool - Hand Held Non-Impact Type

 N/A RFOPB5013HDB

Serration Broach Tool - EDM Type

 N/A RFOPB5013ED

Serration Broach Tool - Wobble Type

 N/A RFOPB5013WB

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 DIAMETER 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 20KSI
4. RFOPB5000HDB SERIES RECOMMENDED FOR USE IN MILD STEELS OF 40 HRC MAX.