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Unit of Measure

T thread, -4H5H/4H6H Thread size

 N/A MJ24x1.5

T thread, -4H5H/4H6H Controlled minor dia

 N/A 22.576-22.652

A - MIN

 N/A 34.010

B - MIN

 N/A 38.850

C

 N/A 32.54-32.62

D

 N/A 24.66-24.71

E

 N/A 3.80-4.05

F

 N/A 7.36-7.49

G

 N/A 10.500-10.630

H (MIN)

 N/A 22.350

J (No. of Teeth)

 N/A 36

K (MIN)

 N/A 2.700

Porting Tool No.

 N/A RPTM253

Serration Broach Tool - Hand Held Impact Type

 N/A RFMOPB253

Serration Broach Tool - Hand Held Non-Impact Type

 N/A RFMOPB253HDB

Serration Broach Tool - EDM Type

 N/A RFMOPB253ED2

Serration Broach Tool - Wobble Type

 N/A RFMOPB253WB

SAE port number (REF)

 N/A MA2110-253

N/A NOTES: UNLESS OTHERWISE SPECIFIED
1. THE DRILL AND PORTING TOOL METHOD OF PREPARING THE MACHINED CAVITY IS MANDATORY. DRILL 0.4-0.7 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 180MPa.