Prehardened Die Steel SKD61 Head thickness JIS
STEPPED EJECTOR PINS WITH GAS VENT –P/L/N DIMENSION DESIGNATION TYPE–
Part Number – L – P – N – SV – NV – (KC/WKC … etc.) GV–EASF5 – 200.01 – P4.0 – N100 – SV15 – NV2.0 – PCC4.97
High Speed Steel SKH51
Alterations
Die Steel SKD61 + Nitrided Die Steel SKD61 Prehardened Die Steel SKD61 Stainless Steel SUS440C High Speed Steel SKH51 + Hard chromate
Alteration details D P.99
Alterations Code
Spec.
Alterations Code
Spec.
Head diameter change HC = 0.1mm increments E D + 1 ≦ HC ＜ H
Single flat cutting D/2 ≦ KC ＜ H/2
HC
KC
KC － 0.1 0
P d 4.00– 7.99 P–0.6 8.00–11.99 P–1.2 12.00–19.90 P–1.8
Head thickness change TC = 0.1mm increments E T/2 ≦ TC ＜ T (Dimensions L and N remains unchanged) E T–TC ≦ Lmax.–L
About Designation Unit for Key Flat Cutting
Two flats cutting D/2 ≦ WKC ＜ H/2
WKC
0 － 0.1
WKC
0 － 0.05 TC
TC
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC < KBC < H/2
T
KAC KBC
＋ 5 0
Step R
SV
KBC － 0.1 0
R ≦ 0.5
KAC
＋ 0.1
Step R
A section
2
NV
(1) To align the key flat with the retention diameter Unit of designation 0.05mm increments possible
d 0
Dowel hole boring X Combination with other than NHC/NHN not available Dowel hole + Spring pin driving X Combination with other than NHC/NHN not available
T ℓ 4 2 3 6 3 5 8 d
Enlarge view of section A
NC
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
T
RKC － 0.1 0
4mm JIS (6/8mm) 10mm
R ≦ 0.5 (Reference value)
d
T
d ℓ 1
B section
4 2
NCW
T
P
6 8
5
Three flats cutting D/2 ≦ DKC ＜ H/2
3
DKC
0 － 5
（ L － N ）
T
N
C ＝ 0.1 ± 0.05
0 － 0.1
DKC
DKC
＋ 0.02 0
＋ 0.05 0
＋ 0.5
Enlarge view of section B
0 ）
（ 200 ＜ L ≦ 500 c L
, L ＞ 500 c L
L
Numbering at the back part of the head Range of designation and Designation method : D P.100 X Combination with SKC not available Automatic sequential numbering on the head Range of designation and Designation method: D P.100 X Combination with SKC not available
217
NHC
P –0.01 –0.02
Four flats cutting D/2 ≦ SKC < H/2
(2) To designate
T P dimension tolerance L D 4.5–8 10–20 L ≦ 500
SKC
( Range of guaranteed shaft diameter precision is only for the shaft diameter and does not include the gas vent. ) M Material SKD61 (Pre–hardened) H Hardness 40–45HRC Range of guaranteed retention diameter (D) precision/Range of guaranteed base material hardness/Step R (Details D P.97 )
SKC － 0.1 0
arbitrary key flat dimensions Unit of designation 0.1mm
T T Tolerance
Part Number
Head thickness
P 0
–0.005
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360
0 – 0.05
0 −0.02 (L ＞ 300 c T
–0.01 –0.02 –0.01 –0.03
–0.01 –0.03 –0.01 –0.04
± 0.5 AG ° 0 ° KGC 120 ° 120 °
GV–EASF GV–EAJSF
1 2 3
4mm (T4)
)
NHN
P 0
0 – 0.05
KGC
–0.002
L ＞ 500
6/8mm (JIS)
Head tapping E Available when D ≧ 8, H ≧ 13, T = 8 for GV–EAJSF X Combination with any other alteration not available
MC
Tip Diameter Designation Total Length Designation
D 8
M
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
Head thickness 4mm
Head thickness JIS
M4 M5 M6 M8
－ 0.1 120 ° 0
MC
Part Number
0.01mm increments
1mm increments
10
KTC
NV 0.1mm increments
12/15 16/20
M × 1
KTC
Type
L (L ＞ 500 c 0.1mm increments)
Tip Diameter Total Length Designation
H T H T
D
P
N
SV
Head thickness 4mm Head thickness JIS
Tip shaft diameter alteration E P–0.08 ≦ PCC ＜ P–0.02 PCC = 0.01mm increments
4.00–4.40
4.5
8
4
6
PCC
Tip Process
105.00–500.00 (136.00–600.0)
8
5
4.00–4.90
Engraving
9
105.00–500.00 (136.00–500.00)
5.5
4.00–5.40
Gas Vent
9
6
4.00–5.90
10
• N ≧ 15 (T4) and 90 ≦ (L–N) ≧ 200
GV–EASF
6.5
4.50–6.40
10
11
7
4.90–6.90
2–50 (L–N)–(SV + NV + 2) ≧ 15
GV–EAJSF
0.5–8.0
8
5.90–7.90
11
13
L − 3
• N ≧
(JIS)
105.00–500.00 (136.00–700.0)
10
7.90–9.90
15
15
and (L–N) ≧ 90
12
8.90–11.90
17
17
8
15
10.90–14.90
20
16
11.90–15.90
–
– –
21
20
15.90–19.90
25
E The figures in ( ) for L dimension are for GV–EAJSF only. E Nitriding may extend to the head as it is applied after dimension P machining.
PartNumber – L – P – N – SV – NV GV–EASF5 – 200.01 – P4.0 – N100 – SV15 – NV2.0
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