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Unit:mm

Cross Recessed Trumpet Head Self Drilling Tapping Screw

JIS B 1125 - 2015

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日标JIS B1125 - 2015 JIS1125 1125JIS Cross Recessed Trumpet Head Self Drilling Tapping Screw
Thread Size
ST3 ST3.5 ST3.8 ST4.2 ST4.5 ST4.8
P pitch
dk max
min
k ≈
j ≈
f ≈
r ≈
Socket No.
M1
Penetration depth Type H max
min
M2
Penetration depth Type Z max
min
y Ref.
1.2 1.4 1.4|2.5 1.4|2.8 2.8 1.6|2.8
7.3 8.3 8.3 8.7 8.7 9
6.8 7.8 7.8 8.2 8.2 8.5
3.5 4 4 4.5 5 5
4 5.5 7 7 7 8
0.6 0.6 0.6 0.8 1 1
4.5 5 5.5 5.5 5.5 6
2 2 2 2 2 2
4.5 5 5 5 5 5.3
2.5 3 3 3 3 3.3
2 2.5 2.5 2.5 2.5 2.8
4.3 5 5 5 5 5.1
2.2 2.9 2.9 2.9 2.9 3.05
1.75 2.45 2.45 2.45 2.45 2.6
3.5 4.2 4.6 5 5.4 5.7

Alternative history

JIS B 1125 - 1995 JIS B 1125 - 2003 JIS B 1125 - 2015
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39 Type IA Cross Recessed Undercut Flat Countersunk Head Tapping Screws - Type AB Thread Forming [Table 15] [ASME]
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43 Type IA Cross Recessed Flat Countersunk Head Tapping Screws - Type A Thread Forming [Table 11] [ASME]
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44 Undercut 82-deg Flat Countersunk Head Tapping Screws - Type AB (ABR) [ASME]
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46 Type II Cross Recessed Flat Countersunk Trim Head Tapping Screws - Type AB Thread Forming [Table 19] [ASME]
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ASME B 18.6.4 - 1998 (R2005) 		Type I Cross Recessed Flat Countersunk Head Tapping Screws - Type C Thread Forming [Table 10]
50 Flat Coutersunk Trim Head Tapping Screws - Type AB and ABR [ASME]
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51 Type I Cross Recessed Undercut Flat Countersunk Head Tapping Screws - Type AB Thread Forming [Table 14] [ASME]
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52 Type IA Cross Recessed Flat Countersunk Trim Head Tapping Screws - Type C Thread Forming [Table 18] [ASME]
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53 Type II Cross Recessed Flat Countersunk Head Tapping Screws - Type C Thread Forming [Table 12] [ASME]
ASME B 18.6.4 - 1998 (R2005) 		Type II Cross Recessed Flat Countersunk Head Tapping Screws - Type C Thread Forming [Table 12]
54 Flat Coutersunk Trim Head Tapping Screws - Type AB and ABR [ASME]
ASME B 18.6.3 (H4B-I/H4B-IA+T1A) - 2024 		Flat Coutersunk Trim Head Tapping Screws - Type AB and ABR
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ASME B 18.6.5M (T10) - 2000 (R2010) 		Metric Type IA Cross-Recessed Flat Countersunk Head Tapping Screws [Table 10]
56 Cross Recessed Bugle Head Self-drilling Tapping Screws [JIS]
JIS B 1125 - 1995 		Cross Recessed Bugle Head Self-drilling Tapping Screws
57 Cross Recessed Countersunk Head Tapping Screws [Table 2] [JIS]
JIS B 1122 (AT2) - 1996 		Cross Recessed Countersunk Head Tapping Screws [Table 2]
58 Two-thread Countersunk (Flat) Head Tapping Screws with Cross Rocessed for Plastics [UNI]
UNI 9709 - 1990 		Two-thread Countersunk (Flat) Head Tapping Screws with Cross Rocessed for Plastics
59 Cross Recessed Ribbed Countersunk Head Tapping Screws [JIS]
JIS B 1125 - 2003 		Cross Recessed Ribbed Countersunk Head Tapping Screws
60 cross Recessed Trumpet Head Self Drilling Tapping Screw [JIS]
JIS B 1125 - 2003 		cross Recessed Trumpet Head Self Drilling Tapping Screw
61 Recess 80°Truncated Countersunk Head Screws - Type Z [Table 11] [BS]
BS 4174 - 1972 		Recess 80°Truncated Countersunk Head Screws - Type Z [Table 11]
62 Cross Recessed Countersunk Head Tapping Screws - Threaded Portion are of Class 1 to 4 [Annex Attached Table 2] [JIS]
JIS B 1122 (AAT2) - 1996 		Cross Recessed Countersunk Head Tapping Screws - Threaded Portion are of Class 1 to 4 [Annex Attached Table 2]
63 Recess 80°countersunk Head Screws - Type Z [Table 9] [BS]
BS 4174 - 1972 		Recess 80°countersunk Head Screws - Type Z [Table 9]
64 Flex. Purpose Drilling Tapping Screws [JIS]
JIS B 1125 - 2015 		Flex. Purpose Drilling Tapping Screws
65 Cross Recessed Countersunk (Flat) Head Tapping Screws [NF]
NF E 25-656 - 1994 		Cross Recessed Countersunk (Flat) Head Tapping Screws
66 Cross-Recessed Flat Countersunk Head Tapping Screws [UNI]
UNI 6955 		Cross-Recessed Flat Countersunk Head Tapping Screws
67 Cross-Recessed Countersunk (Flat) Head Tapping Screws [KS]
KS B 1032 - 2016 (R2021) 		Cross-Recessed Countersunk (Flat) Head Tapping Screws
68 Cross-Recessed Countersunk (Flat) Head Tapping Screws [KS]
KS B 1032 - 2001 		Cross-Recessed Countersunk (Flat) Head Tapping Screws
69 ISO Metric Cross Recessed Countersunk Head Tapping Screws [AS]
AS /NZS 4407 - 1996 		ISO Metric Cross Recessed Countersunk Head Tapping Screws
70 Cross Recessed Countersunk Head Tapping Screws [YJT]
YJT 4058 (WN1413C) 		Cross Recessed Countersunk Head Tapping Screws