LOW HEAD CAP SCREWS / EXTRA LOW HEAD CAP SCREWS
SOCKET HEAD CAP SCREWS / SPRING WASHERS –PENETRATION HOLE TYPE–
CBSS (Low Head Cap Screws)
CBS (Low head cap screw)
Socket Head Cap Screws
CBA
M × P
t
M × P
M × P
ℓ
ℓ
t
ℓ 1
＊ℓ 1
B
L
B
E
L
E
B
L
E
Strength rank 10.9 ( Head strength rank M3–M8 5.8 ) M10 4.8
M Material H Hardness
SCM435
M Material H Hardness
SCM435
＊ M 6– 8 L ≧ 40 c ℓ 1 = 30 M10–16 L ≧ 60 c ℓ 1 = 50
M Material SCM435 Bolt precision JIS B1176 Screw part : Class 2 JIS B0205 6g
H Hardness 38–43HRC s Surface Treatment Black Oxide
32–39HRC s Surface Treatment Black Oxide
32–39HRC
(Strength rank 10.9)
s Surface Treatment Black Oxide
M × P (Coarse thread)
M × P (Coarse thread)
M × P (Coarse thread)
Part Number
ℓ 1
Part Number Type M–L CBS 3–6 8
t max.
ℓ
Part Number Type M–L–d
ℓ
Part Number Type M–L–d
M × P A E B
A E B t max.
ℓ
A E B
A E B
max.
Type M–L
New JIS
New JIS
CBSS 3– 6 8 10 CBSS 4– 6 8 10 CBSS 5– 8 10 12 16 20 CBSS 6– 8 10 12 16 20 25 CBSS 8– 8 10 12 16 20 25 30 CBSS10–10 12 16 20 25 30
CBA12–30–6 30–7 40–6
CBA 5–10–2 20–2
M5 × 0.8
Full Thread
3 × 0.5 6 1.3 1.5
2 1.6
Full Thread
8.5 5
4
M3 × 0.5
Full Thread
10 12 16 20
30–2
5.5 2 2 1.5
22
50–6 60–6 70–6 80–6 90–6 90–7
4 × 0.7 8
1.5 2 2.5 1.6
CBA 6–10–3 20–3 30–3
M12 × 1.75
Full Thread
12
18 12 10
CBS 4–6 8
M6 × 1.0
36
40–3 50–3 60–3 70–3 80–3
5 × 0.8 9
1.5 3
3 1.6
10
6
5
10 12 16 20 25
M4 × 0.7
24
Full Thread
100–6 100–7
7 2.8 2.5 2.3
CBA16–50–9
Full thread
CBA 8–20–4 30–4
6 × 1.0 10 1.5 3
4 2.0
Full Thread
60–9 70–9 80–9 90–9 100–9
M16 × 2.0
CBS 5–8 10 12 16 20 25
24 16 14
40–4 50–4 60–4 70–4 80–4 90–4 100–4
44
M8 × 1.25
M5 × 0.8
Full Thread
13
8
6
8.5 3.5 3 2.7
28
8 × 1.25 13 1.5 4
5 2.5
Part Number CBA5–10–2
The through hole size matches the diameter of the corresponding ejector pins.
Order
30
16
CBS 6–8 10 12 16 20 25
CBA 10–20–5 30–5 40–5
Straight type
Full Thread
Delivery Quotation
Sprue lock bushings
Full Thread
P.699
M10 × 1.5
10 × 1.5 16 1.5 5
5 3.0
M6 × 1.0
50–5 60–5 70–5 80–5 90–5
16
10
8
10 4 4 3
32
30 35 40 45
Hexagonal socket head bolt (Through hole type CBA)
※ "Strength rank" signifies tensile strength of bolts.
18
Ejector Pin
(Example) 10. 9
Indicates that the yield point or the minimum proof strength is 90% of the tensile strength. Indicates that the minimum tensile strength is 980N/mm 2 {100kgf/mm 2 }.
CBW
Spring Washers
CBS 8–10 12 16 20 25 30
Part Number Type
d
(D)
(h)
t
No.
Part Number CBS 4–10 CBSS5–12
t
Delivery Quotation
Order
Full Thread
3 4 5 6 8
3.1 4.1 5.1 6.1 8.1
5.6
2.0 2.4 3.2 3.2
1
7
1.2 1.6 1.6
M8 × 1.25
■ Features ● Low head cap screw • It can be used in the places where conventional hex socket cap screws head makes an obstruction. ● Low Head Cap Screws • Developed to minimize the space required for the screw head size. • Requires no countersinking unlike flat–head screws.
8.8 9.9
13 5 5
3.8
35 40 45 50
12.7
4 5 5 7 9
2
CBW
10 12 16 20 24
22
10.2 12.2 16.2 20.2 24.5
16 18
2.5 2.5 3.5 4.5
（ h ）
24.4 30.6 35.9
CBS 10–16 20 25 30 35 40
M Material SWRH
H Hardness 42–50HRC
10
5
Full Thread
Part Number CBW10
(D) ： Max. (h) ： Min.
M10 × 1.5
Order
16 6 6 4.5
Example
45 50
Delivery Quotation
32
Can be used without enlarging the bolt head counterbore.
CBS 12–20 25 30 35 40 45
CBW
Reference : Counterbore and bolt hole sizes for socket head cap screws D P.1223
M12 × 1.75
Full thread
18 7 8 5
50
30
1101
1102
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