JVC HR-S10EG Service Manual page 149

SECTION 4
EXPLODED VIEWS AND PARTS LIST
SAFETY PRECAUTION
Parts identified by /\ symbol are critical for safety. Replace only with specified aprt numbers.
4.1 STANDARD PART NUMBER CODING (Screw coding)
Standard screw part numbers are as follows.
(]
Surface tr
Shape of thread
(in capital ietters)
1
Type of screw
(in capital letters)
1 2 3 4
T
Material
'Shape of screw head Wonlinetgiecter Taann tment
(in capital letters) (in capital lerters) (in Tigures) tinnginea) (in capital letters)
Type of screw (first d i g i t ) Shape of screw head (second digit)
D Assembied machine screws (with plain and spring washers) D Binding head X Toothed head
L a (with spring washer) Oval countersunk head
N ig (with plain washer) P Pan head
F Feather screws FR Round head
G Washer head tapping screws S Flathead
M_ Wood screws. T Truss head
BESET TE|TIVTITyTTT,
Material (third digit)
Type of screw (first di
Shape of thread (fourth digit)
S Steel N Nickel silver P Cross recessed head screws
E Stainless stee! Y Cast brass (-) Slotted head machine screws
C Cast iron A Aluminum X Slotted-cross recessed head machine screws
U Copper Z Zinc alloy K Cross recessed head machine screws for precision equipment (type 1)
B Brass K Polycarbonate 4H * (type 3)
P- Phosphor bronze A. Cross recessed head tapping screws (type 1)
8 i (type 2)
€ x (type 3)
E Cross recessed head special tapping screws (brand : evertight)
F bs (brand : P-tight)
T ' (brand : taptight)
6 o
— Shape of thread (fourth digit) —
Cross recessed Slotted cross ie
head Slotted head recessed head
6 6 6
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GemO ww
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Surface treatment (ninth digit)
The fifth and sixth digits are numbers indicating a
nominal diameter or dimension. If the dimension exceeds
10 mm, three digits are used. The number indicates a
nominal diameter or dimension, given in millimeters,
multiplied by ten.
Length (seventh and eighth digits)
The seventh and eighth digits are numbers indicating
length in milimeters. The preceding figure is zero when
the dimension is smaller than 10 mm. For machine
sorews used in precision equipment whose length is
given in units of 0.1 mm, the number indicates ten times
the size of their length.
Dichromate treatment after galvanizing (MFZo II-C)
Nickel plating (MFNi I, MENi I)
Chromium plating (MBCr IL, MBCr I)
Silver plating (SP4)
Black coating after plating
Blackening of iron (FB)
Blackening after galvanizing
Pickling of brass (PF2)
Phosphate treatment
Uni-chrome plating
Coating with transparent paint
Coloring red after galvanizing (MFZn II-C)
Coloring biue after galvanizing (MFZn I1-C)
Coloring green after galvanizing (MFZn 11-C)
Coloring purple after galvanizing (MFZn II-C)
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