About Us Pricing Terms of Use FAQ Contact Us
| 简体 | 繁體 |
English Deutsch Français 日本語 Italiano Español 한어 Português Русский بالعربية Türkçe

Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Thread and thread ends for wood screws

DIN 7998 - 1975

Display drawing:

德标DIN 7998 - 1975 DIN7998 7998DIN Thread and thread ends for wood screws
Thread Size
d
1.6 2 2.5 3 3.5 4 4.5 5
d h15 max=nominal size
min
d3 h15 max=nominal size
min
P nominal size
min
max
1.6 2 2.5 3 3.5 4 4.5 5
1.20 1.60 2.10 2.60 3.02 3.52 4.02 4.52
1.1 1.4 1.7 2.1 2.4 2.8 3.1 3.5
0.7 1.00 1.30 1.70 2.00 2.40 2.62 3.02
0.7 0.9 1.1 1.35 1.6 1.8 2 2.2
0.63 0.81 0.99 1.21 1.44 1.62 1.80 1.98
0.77 0.99 1.21 1.49 1.76 1.98 2.20 2.42
Thread Size
d
(5.5) 6 (7) 8 10 12 16 20
d h15 max=nominal size
min
d3 h15 max=nominal size
min
P nominal size
min
max
5.5 6 7 8 10 12 16 20
5.02 5.52 6.42 7.42 9.42 11.30 15.30 19.16
3.8 4.2 4.9 5.6 7 9 12 15
3.32 3.72 4.42 5.12 6.42 8.42 11.30 14.30
2.4 2.6 3.2 3.6 4.5 5 6 7
2.16 2.34 2.88 3.24 4.05 4.50 5.40 6.30
2.64 2.86 3.52 3.96 4.95 5.50 6.60 7.70
①,Parenthesized sizes should be avoided if possible.
Send Inquiry

Similar Standards

1 Plastic threads [DIN]
DIN 7505 - 1986 		Plastic threads
2 Aerospace - Lead and runout threads - Part 1: Rolled external threads [ISO]
ISO 3353-1 - 2020 		Aerospace - Lead and runout threads - Part 1: Rolled external threads
3 Typ C, Thread Forming Tapping Screws [Table V1] [ASME]
ASME B 18.6.4 (C) - 1998 (R2005) 		Typ C, Thread Forming Tapping Screws [Table V1]
4 Thread Lengths for Types C, D, F, G, T, and TRS Tapping Screws [ASME]
ASME B 18.6.3 (T4.3.2.1) - 2024 		Thread Lengths for Types C, D, F, G, T, and TRS Tapping Screws
5 AB self-tapping teeth [ASME/ANSI]
ASME/ANSI B 18.6.3 - 2010 		AB self-tapping teeth
6 ISO general-purpose metric screw threads─Basic dimensions [ISO]
ISO 724 - 1993 		ISO general-purpose metric screw threads─Basic dimensions
7 Tapping Screws Thread [ISO]
ISO 1478 - 1999 		Tapping Screws Thread
8 ISO general purpose metric screw threads - Tolerances - Part 1: Principles and basic data [ISO]
ISO 965-1 - 2013 		ISO general purpose metric screw threads - Tolerances - Part 1: Principles and basic data
9 Dimensions of Threads and Points for Type A Thread-Forming Tapping Screws [ASME/ANSI]
ASME/ANSI B 18.6.3 (T42) - 2013 		Dimensions of Threads and Points for Type A Thread-Forming Tapping Screws
10 Limits of sizes for general purpose external and internal screw threads [ISO]
ISO 965-2 - 1998 		Limits of sizes for general purpose external and internal screw threads
11 Thread Lengths for Types A, AB, B, BF, BP, and BT Tapping Screws [ASME]
ASME B 18.6.3 (T4.3.1-1) - 2024 		Thread Lengths for Types A, AB, B, BF, BP, and BT Tapping Screws
12 Dimensions of Threads and Points for Type A Thread-Forming Tapping Screws [ASME]
ASME B 18.6.3 (T4.1.1.4-1) - 2024 		Dimensions of Threads and Points for Type A Thread-Forming Tapping Screws
13 HA Thread [Figure 2] [ISO]
ISO 5835 (F2) - 1991 		HA Thread [Figure 2]
14 Dimensions of Threads and Points for Type AB and Type ABR Thread-forming Screws [ASME/ANSI]
ASME/ANSI B 18.6.3 (T40) - 2013 		Dimensions of Threads and Points for Type AB and Type ABR Thread-forming Screws
15 ISO - Metric Trapezoidal Screw Threads [DIN]
DIN 103 - 1 - 1977 		ISO - Metric Trapezoidal Screw Threads
16 ISO metric trapezoidal screw threads - Basic and design profiles [ISO]
ISO 2901 - 2016 		ISO metric trapezoidal screw threads - Basic and design profiles
17 Dimensions of Threads and Points for Types AB and ABR Thread-Forming Tapping Screws [ASME]
ASME B 18.6.3 (T4.1.1.1-1) - 2024 		Dimensions of Threads and Points for Types AB and ABR Thread-Forming Tapping Screws
18 Bolted Connections with Reduced Shank; Metric Thread with Large Clearence, Nominal Dimensions and Limits [DIN]
DIN 2510-2 - 1971 		Bolted Connections with Reduced Shank; Metric Thread with Large Clearence, Nominal Dimensions and Limits
19 HB Thread [Figure 4] [ISO]
ISO 5835 (F4) - 1991 		HB Thread [Figure 4]
20 Pipe threads where pressure-tight joints are made on the threads - Part 1: Dimensions, tolerances and designation [ISO]
ISO 7-1 - 1994 		Pipe threads where pressure-tight joints are made on the threads - Part 1: Dimensions, tolerances and designation
21 Dimensions of Threads and Points for Type B and BP Thread-Forming Tapping Screws [ASME/ANSI]
ASME/ANSI B 18.6.3 (T41) - 2013 		Dimensions of Threads and Points for Type B and BP Thread-Forming Tapping Screws
22 Thread and body dimeters for wood screws [Table 1] [ASME/ANSI]
ASME/ANSI B 18.6.1 (T1) - 1981 (R2016) 		Thread and body dimeters for wood screws [Table 1]
23 Symmetrical thread HC [Figure 4] [ISO]
ISO 9268 (F4) - 1988 		Symmetrical thread HC [Figure 4]
24 Pipe threads where pressure tight joints are made on the threads - Part 1 : Taper external threads and parallel internal threads - Dimensions, tolerances and designation [EN]
EN 10226-1 - 2004 		Pipe threads where pressure tight joints are made on the threads - Part 1 : Taper external threads and parallel internal threads - Dimensions, tolerances and designation
25 Fasteners─Bolts,screws and studs─Nominal lengths and thread lengths [ISO]
ISO 888 - 2012 		Fasteners─Bolts,screws and studs─Nominal lengths and thread lengths
26 Wood thread [Table 1] [ASME/ANSI]
ASME/ANSI B 18.6.1 (T1) - 1997 		Wood thread [Table 1]
27 Lag screw threads [Table 16] [ASME/ANSI]
ASME/ANSI B 18.2.1 (T16) - 2010 		Lag screw threads [Table 16]
28 Type B and BP, Thread Forming Tapping Screws [Table 6] [ASME]
ASME B 18.6.4 (B/BP) - 1998 (R2005) 		Type B and BP, Thread Forming Tapping Screws [Table 6]
29 Triangle lock self-tapping teeth--D、F、G [ASME/ANSI]
ASME/ANSI B 18.6.3 - 2010 		Triangle lock self-tapping teeth--D、F、G
30 Threaded rods(inch series) (A307, F1554, A193, CRES,F593,F468) [ASME/ANSI]
ASME/ANSI B 18.31.3 - 2009 		Threaded rods(inch series) (A307, F1554, A193, CRES,F593,F468)
31 ISO inch screw threads─Basic dimensions [ISO]
ISO 725 - 2009 		ISO inch screw threads─Basic dimensions
32 Type AB, Thread Forming Tapping Screws [Table 5] [ASME]
ASME B 18.6.4 (AB) - 1998 (R2005) 		Type AB, Thread Forming Tapping Screws [Table 5]
33 ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts [ISO]
ISO 262 - 1998 		ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts
34 Asymmetrical thread HD [Figure 6] [ISO]
ISO 9268 (F6) - 1988 		Asymmetrical thread HD [Figure 6]
35 Thread Lengths for Type C, D, F, G, T and TRS Tapping Screws [ASME/ANSI]
ASME/ANSI B 18.6.3 (T47) - 2013 		Thread Lengths for Type C, D, F, G, T and TRS Tapping Screws
36 Threads and thread ends for tapping screws [DIN]
DIN 7970 - 1984 		Threads and thread ends for tapping screws
37 self-tapping teeth-B [ASME/ANSI]
ASME/ANSI B 18.6.3 - 2010 		self-tapping teeth-B
38 Dimensions of Threads and Points for Type B and BP Thread-Forming Tapping Screws [ASME]
ASME B 18.6.3 (T4.1.1.2-1) - 2024 		Dimensions of Threads and Points for Type B and BP Thread-Forming Tapping Screws
39 Self-tapping teeth-BF [ASME/ANSI]
ASME/ANSI B 18.6.3 - 2010 		Self-tapping teeth-BF
40 Metric triangle lock with thread end [IFI]
IFI 502 - 1982 		Metric triangle lock with thread end
41 Wood thread [Table 1] [ASME/ANSI]
ASME/ANSI B 18.6.1 (T1) - 1981 		Wood thread [Table 1]
42 Type A, Thread Forming Tapping Screws [Table E1] [ASME]
ASME B 18.6.4 (A) - 1998 (R2005) 		Type A, Thread Forming Tapping Screws [Table E1]
43 Thread Lengths for Type A, AB, B, BF, BP and BT Tapping Screws [ASME/ANSI]
ASME/ANSI B 18.6.3 (T46) - 2013 		Thread Lengths for Type A, AB, B, BF, BP and BT Tapping Screws
44 Deviations for constructional screw threads [ISO]
ISO 965-3 - 1998 		Deviations for constructional screw threads
45 ISO general purpose metric screw threads - General plan [ISO]
ISO 261 - 1998 		ISO general purpose metric screw threads - General plan
46 Pipe threads where pressure-tight joints are not made on the threads [ISO]
ISO 228-1 - 2000 		Pipe threads where pressure-tight joints are not made on the threads
47 Whitworth pipe threads for pipe unions [DIN]
DIN 3858 - 2005 		Whitworth pipe threads for pipe unions
48 Metric Self-tapping Thread End [IFI]
IFI 502 - 1982 		Metric Self-tapping Thread End
49 Limits of sizes and tolerances for metric coarse screw threads [JIS]
JIS B 0209 - 1997 		Limits of sizes and tolerances for metric coarse screw threads
50 General purpose metric screw threads - Limits of sizes [GB]
GB /T 15756 - 2008 		General purpose metric screw threads - Limits of sizes
51 Tapping Screw Threads and Ends [JIS]
JIS B 1125 (1) - 1995 		Tapping Screw Threads and Ends
52 Locking threads with 30 degree wedge ramp [GB]
GB /T 37462 - 2019 		Locking threads with 30 degree wedge ramp
53 General purpose metric screw threads - Basic dimenslons [GB]
GB /T 196 - 2003 		General purpose metric screw threads - Basic dimenslons
54 General purpose metric screw threads - Limit deviations [GB]
GB /T 2516 - 2003 		General purpose metric screw threads - Limit deviations
55 Internal thread for wire thread inserts [GB]
GB /T 24425.5 - 2009 		Internal thread for wire thread inserts
56 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads一 Parallel internal and taper external threads（eqv ISO 7-1:1994） [GB]
GB /T 7306.1 - 2000 		Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads一 Parallel internal and taper external threads（eqv ISO 7-1:1994）
57 General purpose metric screw threads - Tolerances [GB]
GB /T 197 - 2018 		General purpose metric screw threads - Tolerances
58 Tapping screw threads and ends [JIS]
JIS B 1125 (1) - 2003 		Tapping screw threads and ends
59 Thread and point details for Type A threads [TABLE 23] [BS]
BS 4174 - 1972 		Thread and point details for Type A threads [TABLE 23]
60 Limit gauges for metric screw threads [JIS]
JIS B 0251 - 2008 		Limit gauges for metric screw threads
61 Screws thread shanks for thread forming screw-Metric coarse thread series [GB]
GB /T 6559 - 1986 		Screws thread shanks for thread forming screw-Metric coarse thread series
62 General purpose metric screw threads - Limits of sizes for the screw threads of medium quality and preferable plan [GB]
GB /T 9145 - 2003 		General purpose metric screw threads - Limits of sizes for the screw threads of medium quality and preferable plan
63 Trapezoidal screw threads - Part 1: Profiles [GB]
GB /T 5796.1 - 2005 		Trapezoidal screw threads - Part 1: Profiles
64 General purpose metric screw threads - Preferable plan [GB]
GB /T 9144 - 2003 		General purpose metric screw threads - Preferable plan
65 Buttress Thread with the Flank Angles of 3 and 30 Degrees - Part 1: Profiles [GB]
GB /T 13576.1 - 2008 		Buttress Thread with the Flank Angles of 3 and 30 Degrees - Part 1: Profiles
66 The blank diameters for rolling general purpose metric screw threads [GB]
GB /T 18685 - 2017 		The blank diameters for rolling general purpose metric screw threads
67 Metric threads where pressure-tight joints are made on the threads [GB]
GB /T 1415 - 2008 		Metric threads where pressure-tight joints are made on the threads
68 General purpose metric screw threads-Basic profile（ISO 68-1:1998, MOD） [GB]
GB /T 192 - 2003 		General purpose metric screw threads-Basic profile（ISO 68-1:1998, MOD）
69 General purpose metric screw threads - The plan for pipe systems [GB]
GB /T 1414 - 2003 		General purpose metric screw threads - The plan for pipe systems
70 Dryseal pipe threads with the thread angle of 60 degrees [GB]
GB /T 27944 - 2011 		Dryseal pipe threads with the thread angle of 60 degrees
71 Miniature screw threads : Profiles , general plan and basic dimensions [GB]
GB /T 15054.1 - 2018 		Miniature screw threads : Profiles , general plan and basic dimensions
72 Unified screw threads - General plan [GB]
GB /T 20670 - 2006 		Unified screw threads - General plan
73 The interference-fit threads [GB]
GB /T 1181 - 1998 		The interference-fit threads
74 Run-outs, undercuts and chamfers for general purpose metric screw threads (ISO 3508:1976 / ISO 4755:1983) [GB]
GB /T 3 - 1997 		Run-outs, undercuts and chamfers for general purpose metric screw threads (ISO 3508:1976 / ISO 4755:1983)
75 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads一 Taper internal and external threads（eqv ISO 7-1:1994） [GB]
GB /T 7306.2 - 2000 		Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads一 Taper internal and external threads（eqv ISO 7-1:1994）
76 Tapping screws thread [GB]
GB /T 5280 - 2002 		Tapping screws thread
77 Pipe Threads with 55 Degree Thread Angle where Pressure-Tight Joints are not Made on the Threads [GB]
GB /T 7307 - 2001 		Pipe Threads with 55 Degree Thread Angle where Pressure-Tight Joints are not Made on the Threads
78 Specification for wood screws [GB]
GB /T 922 - 1986 		Specification for wood screws
79 The threads for transition fit [GB]
GB 1167 - 1996 		The threads for transition fit
80 Thread and point details for Type Y thread cutting screws [TABLE 6] [BS]
BS 4174 - 1972 		Thread and point details for Type Y thread cutting screws [TABLE 6]
81 General purpose metric screw threads - Limits of sizes for the screw threads of coarse quality and preferable plan [GB]
GB /T 9146 - 2003 		General purpose metric screw threads - Limits of sizes for the screw threads of coarse quality and preferable plan
82 Pipe threads where pressure-tight joints are made on the threads [GB]
GB 7306 - 1987 		Pipe threads where pressure-tight joints are made on the threads
83 Tapping Screw Threads and Ends [JIS]
JIS B 1125 (1) - 2015 		Tapping Screw Threads and Ends
84 Screw Threads - UNJ Profile, Inch [SAE]
SAE AS 8879 - 2001 		Screw Threads - UNJ Profile, Inch
85 Screw Threads for Thread Forming Tapping Screws - Dimensions [IS]
IS 5957 - 2003 		Screw Threads for Thread Forming Tapping Screws - Dimensions
86 ISO general purpose metric screw threads - General plan [IS]
IS 4218 (-2) - 2001 		ISO general purpose metric screw threads - General plan
87 US triangle lock thread-S type [Others]
YJT 1025 - 2012 		US triangle lock thread-S type
88 Metric triangle lock thread-S type [Others]
YJT 1026 - 2012 		Metric triangle lock thread-S type
89 Metric triangle lock thread-C type [Others]
YJT 1027 - 2012 		Metric triangle lock thread-C type
90 Metric triangle lock thread-B type [Others]
YJT 1028 - 2012 		Metric triangle lock thread-B type
91 Metric triangle lock thread-P type [Others]
YJT 1029 - 2012 		Metric triangle lock thread-P type