FREE WASHERS −PLAIN / FOR COUNTERSUNK BOLT / COUNTERBORED−
For countersunk bolt
Q For heat
Plain
Counterbored
Plain
For countersunk bolt
Counterbored
6.3 （ ）
6.3 （ ） 2 － C ＊
insulation
MWSC (No surface treatment) MWSCN (Electroless nickel plated)
MWFB (No surface treatment) MWFBN (Electroless nickel plated)
MWZC (No surface treatment) MWZCN (Electroless nickel plated)
MWSCS
MWFBS
MWZCS
2 － C ＊
2 － C ＊
2 － C ＊
2 － C ＊
2 － C ＊
min.2
min1
2 － C ＊
2 － C ＊
D V ＋ 0.1 0 － 0.1 0
0 ＋ 0.1 V 0 － 0.1 D
0 ＋ 0.1 V 0 ＋ 0.1 P 0 － 0.1 D
H T ± 0.1
± 0.1
T ± 0.1 H ± 0.1
D V ＋ 0.1 0 － 0.1 0
0 ＋ 0.1
0 ＋ 0.1 0 ＋ 0.1
V
H T ± 0.1
± 0.1
T ± 0.1 H ± 0.1
± 0.1 T
V P
0 － 0.1 D
± 0.1 T
0 － 0.1 D
Material SUS416
M Material S45C
M
C ＊ c D ≦ 16…C0.1 – 0.3 D ＞ 16…C0.2–0.5
C ＊ c D ≦ 16…C0.1–0.3 D ＞ 16…C0.2–0.5
0.1mm increments
0.1mm increments
Part Number
D
Part Number
D
T
V
P
H
T
V
P
H
5.0–20.0 (0.1mm increments)
5.0–20.0 (0.1mm increments)
Plain MWSC (No surface treatment) MWSCN (Electroless nickel plated)
Plain MWSCS
For countersunk bolt
For countersunk bolt
Plain For countersunk bolt 3.0–70.0
Plain For countersunk bolt 3.0–70.0
0 ≦ H ＜ T E Length of straight section
0 ≦ H ＜ T E Length of straight section
1.0–50.0
1.0–50.0
For countersunk bolt MWFB (No surface treatment) MWFBN (Electroless nickel plated)
Counterbored
only
Counterbored only
For countersunk bolt MWFBS
20.5–60.0 (0.5mm increments)
20.5–60.0 (0.5mm increments)
3.0–68.0
3.0–68.0
Counterbored
Counterbored 1.0 ≦ H ≦ 48.0 E Counterbored depth of bolt head
Counterbored 5.0–70.0
Counterbored 5.0–70.0
1.0 ≦ H ≦ 48.0 E Counterbored depth of bolt head
Counterbored (D ≧ 10 T ≧ 3.0) MWZC (No surface treatment) MWZCN (Electroless nickel plated)
(D ≧ 10 T ≧ 3.0)
Counterbored
MWZCS
60.5–100.0 (0.5mm increments)
60.5–100.0 (0.5mm increments)
2.0–50.0
2.0–50.0
Counterbored
Counterbored
Plain D ＞ 50 c T ≧ 2: To make D size larger than 50mm, the thickness (T) must be T2 or more. D – V ≧ 2 c The wall thickness must be 1mm or more on each side.
For countersunk bolt D ＞ 50 c T ≧ 2: To make D size larger than 50mm, the thickness (T) must be T2 or more. D – V 2 – (T–H) ≧ 1 c The wall thickness must be at least 1mm.
Plain D ＞ 50 c T ≧ 2: To make D size larger than 50mm, the thickness (T) must be T2 or more. D–V ≧ 2 c The wall thickness must be 1mm or more on each side.
For countersunk bolt D ＞ 50 c T ≧ 2: To make D size larger than 50mm, the thickness (T) must be T2 or more. D–V 2 – (T–H) ≧ 1 c The wall thickness must be at least 1mm.
(D – V)/2 ≧ 1
(D–V)/2 ≧ 1 (V–P) ≧ 2
c The wall thickness must be 1mm or more on each
c The wall thickness must be 1mm or more on each side.
side. (V – P) ≧ 2
c A step of 1mm or more is required on each side. P × 8 ≧ (T–H) ≧ 2 c The bearing bore length (T–H) is between 2mm and P × 8.
c A step of 1mm or more is required on each side. P × 8 ≧ (T–H) ≧ 2 c The bearing bore length (T–H) is between 2mm and P × 8.
PartNumber– D – T – V – P – H MWSCS – D20.0 – T6.0 – V6.0 MWFBS – D20.0 – T6.0 – V6.0 – H3.0 MWZCS – D20.0 – T6.0 – V6.0 – P4.0 – H3.0
Delivery Quotation
Order
PartNumber– D – T – V – P – H MWSC – D20.0 – T6.0 – V6.0 MWFB – D20.0 – T6.0 – V6.0 – H3.0 MWZC – D20.0 – T6.0 – V6.0 – P4.0 – H3.0
Delivery Quotation
Order
SUS416 has low thermal conductivity and is effective in blocking the heat.
Thermal conductivity coefficient ［ cal/cm ・ sec ・℃］ (100 ℃ )
Thermal expansion coefficient ［× 10 – 6 /K( ℃ ) ］ (100 ℃ )
Material
Part Number – D – T – V – P – H – (SSC/WSC/TK) MWFBS – D30.0 – T3.0 – V10.0 –H1.0– TK1
Part Number – D – T – V – P – H – (SSC/WSC/TK) MWFB – D30.0 – T3.0 – V10.0 –H1.0– TK1
Alterations
SUS416
0.058 0.120
9.9
Alterations
S50C
11.5 1cal/(cm ・ sec ・℃ ) = 418.6W/(m ・ K)
Alterations Code
Spec.
Alterations Code
Spec.
Alterations Code
Spec.
Alterations Code
Spec.
Changes T dimension tolerance. T ± 0.1 c T + 0.01 0 T dimension can be designated in 0.01mm increments when using TK1 Changes T dimension tolerance. T ± 0.1 c T + 0.02 + 0.01 T dimension can be designated in 0.01mm increments when using TK2 Changes T dimension tolerance. T ± 0.1 c T ± 0.005 T dimension can be designated in 0.01mm increments when using TK3
Changes T dimension tolerance. T ± 0.1 c T + 0.01 0 T dimension can be designated in 0.01mm increments when using TK1 Changes T dimension tolerance. T ± 0.1 c T + 0.02 + 0.01 T dimension can be designated in 0.01mm increments when using TK2 Changes T dimension tolerance. T ± 0.1 c T ± 0.005 T dimension can be designated in 0.01mm increments when using TK3
Cuts a face. SSC = 1mm increments E SSC ≧ V/2 ＋ 2, SSC ≦ D/2−1 X Not available for D5–D8
TK1
Cuts a face. SSC = 1mm increments E SSC ≧ V/2 ＋ 2, SSC ≦ D/2−1 X Not available for D5–D8
TK1
SSC
SSC
SSC ± 0.1
SSC ± 0.1
TK2
TK2
Cuts two faces. WSC = 1mm increments E WSC ≧ V ＋ 4, WSC ≦ D−2 X Not available for D5 – D8
Cuts two faces. WSC = 1mm increments E WSC ≧ V ＋ 4, WSC ≦ D−2 X Not available for D5–D8
WSC
TK
WSC
TK
TK3
TK3
WSC ± 0.1
WSC ± 0.1
Note that designated tolerance of TK alteration is different from that of free washer ( D P.1113 ).
For heat insulation
E
1111
1112
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