苏州斯托茨致力于将国外先进的测量理念及设备引入中国制造型企业,这些检测仪器应用在汽车、摩托车制造、液压、航天航空、轴承、油泵油嘴、精密机械加工、铸造等行业。主要代理品牌：德国进口螺纹规、德标进口量规、DIN标准量规，德国莱尔麦斯量规、德国原装进口LMW量规，日本JPG螺纹规、美国Dorsey
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Acme和美标Stub
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德标量规包括如下标准
- GO Plain ring gauges acc.
to DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M, NF E 02-202
- NO GO ring gauges acc. to
DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M, NF E 02-202
- Master rings acc. to DIN
2250-1, BS 4064, BS 4065, ANSI/ASME B89.1.6M, NF E 11-011
- GO plain plug gauges acc.
to DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M, NF E 02-202
- NO GO plain plugs acc. to
DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M, NF E 02-202
- GO/NO GO plain plug
gauges acc. to DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M
- GO plain snap gauges acc.
to DIN 7150-2:2007
- NO GO plain snap gauges
acc. to DIN 7150-2:2007
- GO/NO GO (double sided)
plain snap gauges acc. to DIN 7150-2:2007
- Master setting disks (Style
1, 2 and 3) acc. to ANSI/ASME B89.1.6M
- Rod gauges with spherical
ends acc. to DIN 7150-2:2007
- Check plugs for snap
gauges acc. to DIN 7150-2:2007
- Setting standards for
micrometers acc. factory standards
- ISO metric screw threads
according to ISO 1502:1996 (DIN ISO 965:1998)
- Unified threads and
thread gauges according to ANSI/ASME B1.1-1982/ B1.2-1983
- Gauges for unified
threads (ANSI/ASME B1.1-1982) according to BS 919-1:2007
- Gauges for Metric M Screw
Threads according to ANSI/ASME B1.16M-1984
- NPSM pipe threads
according to ANSI/ASME B1.20.1-1983
- Screw taps according to
DIN 802:1982
- Pipe threads and gauges
according to ISO 228:2000 (also the older DIN 259:1979)
- Steel conduit threads
according to DIN 40431:1972
- ISO metric trapezoidal
screw threads according to DIN 103:1997
- Parallel screw threads of
Whitworth form according to BS 84:2007 / BS 919-2:2007
- Metrical thread inserts
according to DIN 8140:1999 (EG threads)
- HELICOIL threads
according to Boellhoff factory standard
- Knuckle threads according
to DIN 405:1997
- Buttress threads
according to DIN 513:1985 (factory standard for gauge values)
- Threads for valves
according to DIN 7756:1979 and ETRTO V.7
- ACME Threads according to
ASME / ANSI B 1.5 – 1988
- Stub ACME Threads
according to ASME / ANSI B 1.8 – 1988
- Hot-dip galvanised
threads according to DIN 965:1999
- Pipe Threads, General
purpose (NPT..) according to ANSI/ASME B1.20.1 - 1983
- Pipe Threads where
pressure-tight joints are made on the threads acc. to ISO 7-2:2000
- Pipe threads for tubes
and fittings according to BS21:1985
- Metric External Taper
Screw Threads according to DIN 158
- Gages for Dryseal Pipe
Threads (e.g. NPTF..) according to ASME B1.20.5-1991
- Whitworth Pipe threads
for threaded pipes and fittings acc. to DIN 2999 – July 1983
(metric) DIN 13-1
ISO Fine Thread I (metric) DIN 13-2
ISO Fine Thread II (metric) DIN 13-3
ISO Fine Thread III (metric) DIN 13-4
ISO Fine Thread IV (metric) DIN 13-5
ISO Fine Thread V (metric) DIN 13-6
ISO Fine Thread VI (metric) DIN 13-7
ISO Fine Thread VII (metric) DIN 13-8
ISO Fine Thread VIII (metric) DIN 13-9
ISO Fine Thread IX (metric) DIN 13-10
ISO Fine Thread X (metric) DIN 13-11
Knuckle Thread DIN
405
Knuckle Thread
DIN 20400
Buttress Fine Thread DIN 514
Buttress Coarse Thread DIN 513
Buttress Thread 45°
DIN 2781
Trapezoidal Fine Thread DIN 103
Trapezoidal Coarse Thread DIN 103
Valve Thread DIN
7756
Cycle Thread DIN
79012
PG Thread DIN 40430
Pipe Thread DIN 158
Dairy Thread DIN
11851
Edison Thread
DIN 40400
Glass Thread DIN
40450
Knuckle Thread for
glass containers DIN 168
Threads for plastic containers DIN 6063
Camera mount Thread
S. & H. Thread
Sewing-machine
Thread
C. E. I. Thread
Löwenherz Thread
Bodmer Thread
French Thread
VDI Thread
Ducommun Steinle
Thread
Hamann Patronen
Thread
Thury Thread
Whitworth
Instrument Thread
Whitworth Fine DIN 239
Whitworth Fine DIN 240
Whitworth Fine
DIN LON 282
Whitworth Fine
DIN LON special
Whitworth Fine
DIN LON 286
Whitworth Fine
DIN LON 287
S. J. Thread
Sellers Thread
UNC Thread (USA)
UNEF Thread (USA)
UNF Thread (USA)
UNM Thread (USA)
UNR Thread (USA)
UNS Thread (USA)
8-UN Thread (USA)
12-UN Thread (USA)
16-UN Thread (USA)
20-UN Thread (USA)
NPT Thread (USA)
NPTF Thread (USA)
NPSC Thread (USA)
NPSF Thread (USA)
NPSL Thread (USA)
NPSM Thread (USA)
ACME Thread (USA)
STUB ACME Thread
(USA)
Sharp V Thread
(USA)
ME Model Engineer Thread (GB)
BA British Association (GB)
BSB British Standard Brass (GB)
BSF Whitworth Fine Thread (GB)
BSW Whitworth Coarse Thread (GB)
BSPP Whitworth Pipe Thread (GB)
BSPT Tapered Whitworth Pipe Thread (GB)
DIN
405 General Purpose Knuckle Screw Threads (Rd)
The
Rd-series is a bit confusing because the Rd designation is used by both DIN 405, DIN
15403, and DIN 20400, but
the screw threads are not identical in size or screw thread form. It appears
that DIN 405 is the
older standard, and was being used in underground mining operations but was the
cause of mechanical failures in hoists (that could hurt). In 1951, to solve the
mechanical failures, a new screw thread design:DIN 15402 and DIN 20400 was
developed. Knowing this history, and if you are in the design process of a new
Rd screw thread application, I would suggest that you lean toward the DIN 15403
and DIN 20400 screw
thread if at all possible.
Quick
summary of the differences between DIN 405, DIN
15403 and DIN 20400:
- DIN 15403 and DIN 20400 have
the same thread form/design.
- DIN 405 uses
metric nominal major diameter with threads-per-inch as the pitch designation. DIN 20400 thread
uses metric nominal diameter with metric pitch. This is the easiest way to
differentiate between the two standards.
- DIN 405 has 63
designated screw thread sizes (8mm to 200mm) split between the favored Series 1
(40 sizes) and discouraged Series 2 (23 sizes). DIN 20400 has 47
designated screw thread sizes (10mm to 300mm).
- DIN 405 has a
limited range of pitch from 2.54mm (10-TPI) to 6.35mm (4-TPI). DIN 20400
increases the pitch as the nominal diameter increases using a range of pitch
from 3mm to 16mm.
- DIN 405 and DIN 20400 both
employ a screw thread flank angle of 30°.
- DIN 405 screw
thread root and crest have a large full radius. DIN 20400 screw
thread root has a large full radius, but the screw thread root has two smaller
radii which leaves a flat at the bottom of the screw thread root.
Class-of-Fit
The tolerance paradigm for DIN 405 is somewhat complicated in that it gives
class-of-fit several options for various diameters and is related to the length
of engagement for the product threads. This structure allows for engineering
flexibility; however; according to DIN 405-2 paragraph 4.1: … Where the
tolerance class is not identified, it shall be taken to be 7H6H for internal
threads and 7h6h for external threads. While the official standard allows for
the DIN 405 Rd-series class-of-fit to be left off of engineering drawings;
IMHO; it is a very simple task to include it in all references to the thread.
By not reporting the class-of-fit on the drawing questions can arise which cost
time and delay in manufacturing; which reduces profits. For the cost of the
small amount of time and ink used to report the full thread requirements, many
man-hours may be saved by an uncounted number of people over time.
Parts
of DIN 405
DIN 405-2 General-purpose knuckle threads Part 1: Profiles and nominal sizes
DIN 405-2 General-purpose knuckle threads Part 2: Tolerances
DIN 405-2 General-purpose knuckle threads Part 3: Gauges for external and
internal threads – Types, profiles and tolerances
Parts
of DIN 15403
DIN 15403 Lifting Hooks for Hoists; Knuckle Threads
Parts
of DIN 20400
DIN 20400 Knuckle Threads for the Mining, Threads with Large Load-Bearing Depth