P/L/N dimension designation type
High Speed Steel SKH51
STEPPED EJECTOR PINS – P/L/N DIMENSION DESIGNATION TYPE –
N
L
Part Number – L – P – N – (KC/WKC … etc.) EHSJFE 7 – 180.00 – P6.60 – N50 – SKC4.0
High Speed Steel SKH51 High Speed Steel
Alterations
Alteration details D P.99
Die Steel SKD61 + Nitrided Die Steel SKD61 Prehardened Die Steel SKD61 Stainless Steel SUS440C High Speed Steel SKH51 + Hard chromate
Alterations Code
Spec.
Alterations Code
Spec.
Head diameter change HC = 0.1mm increments E D + 1 ≦ HC ＜ H, D ≧ 1.5
Precision single flat cutting D/2 ≦ VKC ＜ H/2
VKC
HC
VKC － 0.02 0
EHSF EHYF
Head diameter change (precision) HCC = 0.1mm increments E D + 1 ≦ HCC ＜ H–0.3, D ≧ 1.5
EHSJFE EHSFE
Precision two parallel flats cutting D/2 ≦ VWC ＜ H/2
R ≦ 0.5
VWC
HCC
VWC － 0.02 0
Step R
EHSJF
（ D ≦ 2
R ≦ 0.3 ）
Head thickness change TC = 0.1mm increments E T/2 ≦ TC ＜ T, D ≧ 1.5 (Dimensions L and N remains unchanged) E T–TC ≦ Lmax.–L
Single flat cutting D/2 ≦ KC ＜ H/2
TC － 0.02 0
KC
TC
KC － 0.1 0
About Designation Unit for Key Flat Cutting
T
－ 0.02 0
T
－ 0.01 － 0.02 P
（ L － N ）
－ 5 0
P － 0.005 0
＋ 0.1 0
N
Dowel hole boring E Available when H ≧ 4 X Combination with other than
d
T d ℓ 4 2 3 6 3 5 8
＋ 0.05 0
0 ＋ 0.02
（ L ＞ 200
）
Two flats cutting D/2 ≦ WKC ＜ H/2
L
WKC
NC
L
4mm JIS (6/8mm) 10mm
WKC － 0.1 0
T
NHC/NHN/TMC/GVC not available
Part Number
Head thickness
T P Tolerance
EHYF (Small diameter)
(1) To align the key flat with the retention diameter Unit of designation 0.05mm increments possible
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
Dowel hole + Spring pin driving E Available when H ≧ 4 X Combination with other than
ℓ 1
d
T d 4 2
4mm (T4)
0 –0.005
KAC KBC
EHSF EHSJF EHSFE EHSJFE
M Material SKH51 H Hardness 58–60HRC Range of guaranteed retention diameter (D) precision/base material hardness/Step R (Details D P.97 ) EHYF is applied with overall quenching. (No annealing on head)
NCW
－ 0.1 0
－ 0.1 0
6 8
5
KAC
KBC
3
6/8mm (JIS)
NHC/NHN/TMC/GVC not available
T
P –0.01 –0.02 –0.01 –0.02
4mm (T4)
–0.01 –0.02
Dowel hole + Dowel pin driving E Available when H ≧ 4 X Combination with other than NHC/NHN not available
ℓ 2
d
T d 4 2
6/8mm (JIS)
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
P 0
RKC
NCS
–0.005
6 8
5
RKC － 0.1 0
3
T
Part Number
P 0.005mm increments
N 1mm increments
L 0.01mm increments
P 0
H
T
–0.002
(2) To designate arbi- trary key flat dimen- sions Unit of designation 0.1mm
Type
D
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
217
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
0.5 0.6 0.7 0.8 0.9
0.300 – 0.400 0.300 – 0.500 0.300 – 0.600 0.300 – 0.700 0.300 – 0.800 0.300 – 0.900 0.300 – 1.000 0.300 – 1.100
NHC
Tip Diameter Designation Total Length Designation
DKC － 0.1 0
DKC
N ≧ 15 and (L–N) ≧ 15
EHYF (Small diameter)
30.00 – 60.00
2
4
SKC Four flats cutting D/2 ≦ SKC ＜ H/2
1 2 3
NHN
Tip Diameter Total Length Designation Tip Diameter Total Length Designation
－ 0.1 0
SKC
1
1.1 1.2
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360
Lapping on the tip face E Available when P ≧ 0.6 X Not available for EHYF Gas vent machining S, B = 1mm increments E 2 ≦ S ≦ 10, S + 5 ≦ B ≦ 30 E Available when P ≧ 3
Tip Process
0 °
KGC
TMC
L
Head thick- ness 4mm
Head thick- ness JIS
KGC
Part Number
0.01mm increments
Engraving
N 1mm increments
Type
120 ° 120 °
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
Gas Vent
－ 0.1 0 120 °
H T H T
D
L
P
Head thick- ness 4mm
Head thick- ness JIS
KTC
GVC
S
KTC
B
40.00 – 100.00 100.01 – 150.00
0.30 – 0.90 0.60 – 0.90 0.60 – 1.00 0.60 – 1.10 0.60 – 1.20 0.60 – 1.30 0.60 – 1.40 0.80 – 1.50 0.80 – 1.60 0.80 – 1.70 0.80 – 1.80 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 6.90 – 8.90 7.90 – 9.90 8.90 – 11.90
1
MC
Head tapping E Available when D ≧ 8, H ≧ 13, T = 8 X Combination with other than TMC/GVC not available
D M 8–9 M4 10 M5 12 M6
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9
MC
3
N ≧ 15 and 15 ≦ (L – N) ≦ 150 E When L250.01 – 300.00 50 ≦ (L – N) ≦ 150
M × 1
40.00 – 200.00
–
–
–
40.00 – 250.00
4
EHSF ( P 0
–0.005 )
2
40.00 – 300.00
2.5
5 6
4
3
EHSFE ( P –0.01 –0.02 )
40.00 – 350.00 (50.00 – 350.00)
3.5
7
4
• N ≧ 15(T4) • N ≧ 30(JIS) and 20 ≦ (L – N) ≦ 200 E When L300.01 – 350.00 50 ≦ (L – N) ≦ 200
8
4.5
8
EHSJF ( P 0 –0.005 )
5
9
5.5
6
9
6
10
6.5
40.00 – 350.00 (50.00 – 350.00)
10
11
7 8 9
EHSJFE ( P –0.01 –0.02 )
11 14 15 17
13 14 15 17
8
10 12
E The figures in ( ) for L dimension are applicable for EHSJF/EHSJFE only.
Part Number – L – P – N EHSJF 5 – 300.00 – P3.00 – N150
Delivery Quotation
Order
101
102
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