Die Steel SKD61 + Nitrided
P/L/N dimension designation type
STEPPED EJECTOR PINS – P/L/N DIMENSION DESIGNATION TYPE –
N
L
Part Number – L – P – N – (KC/WKC … etc.) EJSF 10 – 720.5 – P9.00 – N300 – SKC7.0
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
KC
HC
KC － 0.1 0
R ≦ 0.5
Step R
（ D ≦ 2 R ≦ 0.3 ）
Two flats cutting D/2 ≦ WKC ＜ H/2
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
WKC
WKC － 0.1 0
TC － 0.05 0
TC
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
T
T
KAC KBC
－ 0.1 0
－ 0.1 0
（ L － N ）
－ 5 0
P
KAC
KBC
N
＋ 0.1
Dowel hole boring E Available when H ≧ 4 X Combination with other than NHC/NHN not available Dowel hole + Spring pin driving E Available when H ≧ 4 X Combination with other than NHC/NHN not available
＋ 0.02
＋ 0.05
＋ 0.5 ） 0
T d ℓ 4 2 3 6 3 5 8
0 d
（ 200 ＜ L ≦ 500
, L ＞ 500
(1) To align the key flat with the retention diameter Unit of designation 0.05mm increments possible
L
L
L
0
0
NC
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
M Material SKD61 + Nitrided H Hardness Surface:
RKC
Part Number
Head thickness
T
RKC － 0.1 0
4mm JIS (6/8mm) 10mm
T Tolerance
T
T P dimension tolerance D L 1.5–8 10–20 L ≦ 500
900HV– Base material: 40–45HRC
0 –0.02 (L ＞ 300 c T
0 –0.05 )
ℓ 1
d
T d 4 2
ENSF 4mm (T4)
Range of guaranteed retention diameter (D) precision/ base material hardness/surface hardness for nitrid- ing/Step R (Details D P.97 )
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
NCW
–0.01 –0.02 –0.01 –0.03
–0.01 –0.03 –0.01 –0.04
6 8
5
3
DKC － 0.1 0
0 –0.05
DKC
EJSF
T
6/8mm (JIS)
L ＞ 500
Dowel hole + Dowel pin driving E Available when H ≧ 4 X Combination with other thanNHC/NHN not available
P –0.01 –0.02 –0.01 –0.02
SKC Four flats cutting D/2 ≦ SKC ＜ H/2
ℓ 2
d
T d 4 2
(2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
Head thickness 4mm
Head thickness JIS
－ 0.1 0
NCS
SKC
Part Number
6 8
5
3
P 0
L 0.01mm increments (L ＞ 500 c 0.1mm increments)
T
–0.005
P 0.01mm increments
N 1mm increments
AG °
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360
± 0.5
Type
0 °
KGC
P 0
Numbering at the back part of the head Range of designation and Designation method: D P.100 X Combination with SKC/MC not available Automatic sequential numbering on the head Range of designation and Designation method: D P.100 X Combination with SKC/MC not available
H T H T
D
–0.002
217
Head thickness 4mm
Head thickness JIS
KGC
NHC
Tip Diameter Designation Total Length Designation
120 ° 120 °
1.5
40.00–200.00
0.80– 1.40 0.80– 1.90 0.80– 2.40 1.00– 2.90 1.50– 3.40 1.50– 3.90 2.50– 4.40 3.00– 4.90 3.50– 5.40 4.00– 5.90 4.50– 6.40 4.90– 6.90 5.90– 7.90 7.90– 9.90 8.90–11.90 10.90–14.90 11.90–15.90 15.90–19.90
3 4 5 6
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
N ≧ 15 and 15 ≦ (L–N) ≦ 150
－ 0.1 0 120 °
KTC
2
1 2 3
NHN
KTC
40.00–300.00
2.5
–
– –
Tip Diameter Total Length Designation Tip Diameter Total Length Designation
3
Head tapping E Available for EJSF when D ≧ 8, H ≧ 13, T = 8 X Combination with any other alteration not available
MC
D 8
M
40.00–400.00
M4 10 M5 12/15 M6 16/20 M8
3.5
Tip Process
MC
7
4
40.00–400.00 (50.00–600.0)
M × 1
8
Engraving
4.5
• N ≧ 15 (T4) and 20 ≦ (L–N) ≦ 200
8
ENSF
5
40.00–500.00 (50.00–600.0)
4
Gas Vent
9
5.5 40.00–500.00 (50.00–500.00) 6 40.00–500.00 (50.00–1000.0) 6.5 40.00–500.00 (50.00–700.0)
6
9
10
10
11
EJSF
7 8
• N ≧ L – 3
(JIS)
11 15 17
13 15 17 20 21 25
40.00–500.00 (50.00–1000.0)
and (L–N) ≧ 10
10 12 15 16 20
8
50.00–900.0
– –
–
50.00–1000.0
E The figures in ( ) for L dimension are for EJSF only.
E Nitriding may extend to the head as it is applied after dimension P machining.
Part Number – L – P – N ENSF 2.5 – 149.78 – P1.5 – N70
Delivery Quotation
Order
107
108
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