Hitachi NR 83A2 Technical Data And Service Manual page 19

(4) Magazine section
Parts that were newly designed or changed for the Model NR 83A2 and not interchangeable with the Model
1
NR 83A
Part
Magazine [82]
(Including Handle
Arm (B) [37])
Handle
Arm (B) [37]
The parts of the magazine section except the above are common to those of the Model NR 83A.
NR 83A2
Nylock Bolt
(W/Flange)
M8 x 16 [35]
Magazine [82]
NR 83A
Spring washer
Washer
Nylon nut
M5 x 25
--- 16 ---
Caution
The Magazine [82] is not
interchangeable because the
mounting method (bolt diameter)
to the body ass'y is different.