thread m55 x .5
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Type of thread Metric screw thread M (ISO 68-1, ISO 965, DIN 13, ANSI 1.13M)
Gauges ISO 1502:1996
*Values in (in.), angles in (, ', ") Basic parameters
Nominal size 55 mm
Pitch 0.5 mm
Number of starts 1
Lead 0.5 mm
Left-hand thread no
Length of engagement 2.4 - 7.1 mm
Flank angles : 60 1: 30 2: 30 Add. parameters
External thread Internal thread
Length of engagement N Length of engagement N
Pitch diameter (d2) 6g Pitch diameter (D2) 6H
Major diameter (d) 6g Minor diameter (D1) 6H
Surface finishing
Type of finishing Adding or altering Type of finishing Adding or altering
Min./Max. thickness
0 in
Min./Max. thickness
0 in
0 in 0 in
Measurement of pitch diameter
Optimum diameter of wires and balls 0.01137 in
External thread Internal thread
Min./Max. diameter 0.00994 - 0.01989 in Min./Max. diameter 0.00426 - 0.01705 in
Diameter of the wires 0.018 in Diameter of the balls 0.01137 in
Measuring force 0 lbf Measuring force 0 lbf
Correction for the meas. force 0 in Correction for the meas. force 0 in
Workpiece
External thread Internal thread
M 55 x 0.5 - 6g M 55 x 0.5 - 6H
Basic profile
Major diameter (d=D) 2.1654 Pitch 0.0197
Pitch diameter (d2=D2) 2.1526 Height of basic profile (H) 0.0170
Minor diameter (d3) 2.1412 Minor diameter (D1=d1) 2.1441
Thread height (h3) 0.0121 Thread height (H1) 0.0107
Flat at root (b) 0.0049 Lead angle 0 10' 0"
Limit sizes
Min. pitch diameter 2.1476 Min. pitch diameter 2.1526
Max. pitch diameter 2.1518 Max. pitch diameter 2.1581
Min. major diameter 2.1604 Min. major diameter 2.1654
Max. major diameter 2.1646 Max. major diameter * 2.1737
Min. minor diameter 2.1355 Min. minor diameter 2.1441
Max. minor diameter 2.1404 Max. minor diameter 2.1496
Min. P.D. measurement 2.1846 Min. P.D. measurement 2.1355
Max. P.D. measurement 2.1887 Max. P.D. measurement 2.1410
Mean sizes and bilateral symmetrical tolerances
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Pitch diameter 2.14969 Pitch diameter 2.15531
Tolerance for pitch diameter 0.00209 Tolerance for pitch diameter 0.00276
Major diameter 2.16248 Major diameter * 2.16953
Tolerance for major diameter 0.00209 Tolerance for major diameter * 0.00417
Minor diameter 2.13795 Minor diameter 2.14681
Minor diameter - Tolerance 0.00248 Minor diameter - Tolerance 0.00276
P.D. Measurement 2.18664 P.D. Measurement 2.13827
Tolerances
Tolerances for workpiece acc. to ISO 965-1:1998
External thread Internal thread
Pitch diameter - Fund. deviation -0.0008 Pitch diameter - Fund. deviation 0.0000
Pitch diameter - Tolerance 0.0042 Pitch diameter - Tolerance 0.0055
Pitch diameter - Up. deviation -0.0008 Pitch diameter - Up. deviation 0.0055
Pitch diameter - Low. deviation -0.0050 Pitch diameter - Low. deviation 0.0000
Major diameter - Fund. deviation -0.0008 Minor diameter - Fund. deviation 0.0000
Major diameter - Tolerance 0.0042 Minor diameter - Tolerance 0.0055
Major diameter - Up. deviation -0.0008 Minor diameter - Up. deviation 0.0055
Major diameter - Low. deviation -0.0050 Minor diameter - Low. deviation 0.0000
Min. radius at root (r) 0.0025
Max. radius at root (r) 0.0028
Corrections for surface finishing of the workpiece
Correction for min. pitch diameter 0.00000 Correction for min. pitch diameter 0.00000
Correction for max. pitch diameter 0.00000 Correction for max. pitch diameter 0.00000
Correction for min. major and minor diameter 0.00000
Correction for min. major and minor diameter 0.00000
Correction for max. major and minor diameter 0.00000
Correction for max. major and minor diameter 0.00000
Threading tools
Cutting tap M 55 x 0.5 ISO 2 (ISO 2857, EN 22857)
Min. pitch diameter d2 2.1539 Min. thread height 0.0115
Max. pitch diameter d2 2.1548 Tolerance on flank angle 35'
Min. major diameter d 2.1671 Pitch tolerance 0.0003
Max. major diameter d 2.1689 Measuring length (number of pitches) 12
Max. minor diameter d1 2.1441 Runout tolerance 0.0009
Min. P.D. measurement 2.1908
Max. P.D. measurement 2.1917
Working gauges
Screw ring and snap gauges (adjustable and solid)
GO screw ring gauge NOT GO screw ring gauge
Pitch diameter 2.15169 0.00028 2.14732 0.00028
Min. and max. pitch diameter 2.15142 2.15197 2.14705 2.14760
Max. pitch diameter (worn) 2.15232 2.14780
Min. major diameter 2.16634 2.16492
Minor diameter 2.14327 0.00028 2.14339 0.00055
Min. and max. minor diameter 2.14299 2.14354 2.14283 2.14394
Flank angle and profile 30 25' complete 30 25' truncated
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Min. and max. P.D. measurement 2.13437 2.13492 2.13000 2.13055
Max. P.D. measurement (worn) 2.13528 2.13075
Screw plug gauges
GO screw plug gauge NOT GO screw plug gauge
Pitch diameter 2.15303 0.00022 2.15829 0.00022
Min. and max. pitch diameter 2.15281 2.15325 2.15807 2.15850
Min. pitch diameter (worn) 2.15234 2.15783
Major diameter 2.16583 0.00043 2.16222 0.00043
Min. and max. major diameter 2.16539 2.16626 2.16179 2.16266
Max. minor diameter 2.14121 2.14121
Flank angle and profile 30 25' complete 30 25' truncated
Min. and max. P.D. measurement 2.18977 2.19020 2.19502 2.19546
Min. measurement P.D. (worn) 2.18929 2.19479
Plain gauges for major diameter
GO ring and snap gauge NOT GO ring and snap gauge
Nominal size 2.16378 0.00020 2.16039 0.00020
Min. and max. size 2.16358 2.16398 2.16020 2.16059
Max. size (worn) 2.16457
Plain gauges for minor diameter
GO plug gauge NOT GO plug gauge
Nominal size 2.14492 0.00020 2.14957 0.00020
Min. and max. size 2.14472 2.14512 2.14937 2.14976
Min. size (worn) 2.14406
Setting gauges
Screw setting plugs for adjustable ring gauges
Setting plug for GO ring gauges Setting plug for NOT GO ring
gauges
Pitch diameter 2.15154 0.00016 2.14717 0.00016
Min. and max. pitch diameter 2.15138 2.15169 2.14701 2.14732
Major diameter (compl.) 2.16457 0.00035 2.16012 0.00035
Min. and max. major diameter (compl.) 2.16421 2.16492 2.15976 2.16047
Major diameter (trunc.) 2.15547 0.00018 2.15110 0.00035
Min. and max. major diameter (trunc.) 2.15530 2.15565 2.15075 2.15146
Max. minor diameter 2.14015 2.13625
Flank angle and profile (compl.) 30 25' complete 30 25'' complete
Flank angle and profile (trunc.) 30 25' truncated 30 25'' truncated
Min. and max. P.D. measurement 2.18833 2.18865 2.18396 2.18428
Screw setting plugs for snap gauges
Setting plug for GO snap gauges Setting plug for NOT GO snap
gauges
Pitch diameter 2.15110 0.00016 2.14717 0.00016
Min. and max. pitch diameter 2.15094 2.15126 2.14701 2.14732
Major diameter 2.16457 0.00035 2.16039 0.00035
Min. and max. major diameter 2.16421 2.16492 2.16004 2.16075
Max. minor diameter 2.13976 2.13523
Flank angle and profile 30 25' complete 30 25' complete
Min. and max. P.D. measurement 2.18790 2.18821 2.18396 2.18428
Screw setting gauges for measuring instruments acc. to DIN 2241:2005
Setting plug gauge Setting ring gauge
Min. and max. pitch diameter 2.15150 2.15177 2.15256 2.15311
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Min. and max. major diameter 2.16429 2.16457 2.16713
Min. and max. minor diameter 2.13759 2.14406 2.14461
Flank angle and profile 30 25' complete 30 25' complete
Min. and max. P.D. measurement 2.18845 2.18872 2.13551 2.13606
Checking gauges
Check plugs for screw ring gauges
GO ch. plug for GO ring GO ch. plug for NOT GO ring
Pitch diameter 2.15110 0.00016 2.14673 0.00016
Min. and max. pitch diameter 2.15094 2.15126 2.14657 2.14689
Major diameter 2.16457 0.00035 2.16457 0.00035
Min. and max. major diameter 2.16421 2.16492 2.16421 2.16492
Max. minor diameter 2.13976 2.13539
Flank angle and profile 30 25' complete 30 25' complete
Min. and max. P.D. measurement 2.18790 2.18821 2.18353 2.18384
NOT GO ch. plug for GO ring NOT GO ch. plug for NOT GO
ring
Pitch diameter 2.15197 0.00016 2.14760 0.00016
Min. and max. pitch diameter 2.15181 2.15213 2.14744 2.14776
Major diameter 2.15591 0.00018 2.16039 0.00035
Min. and max. major diameter 2.15573 2.15608 2.16004 2.16075
Max. minor diameter 2.14015 2.13625
Flank angle and profile 30 25' truncated 30 25' complete
Min. and max. P.D. measurement 2.18876 2.18908 2.18439 2.18471
Wear ch. plug for GO ring Wear ch. plug for NOT GO ring
Pitch diameter 2.15232 0.00016 2.14780 0.00016
Min. and max. pitch diameter 2.15217 2.15248 2.14764 2.14795
Major diameter 2.15626 0.00018 2.16059 0.00035
Min. and max. major diameter 2.15608 2.15644 2.16024 2.16094
Max. minor diameter 2.14015 2.13625
Flank angle and profile 30 25' truncated 30 25' complete
Min. and max. P.D. measurement 2.18912 2.18943 2.18459 2.18491
Check plugs for snap gauges for major diameter
GO ch. plug for GO snap NOT GO ch. plug for NOT GO
snap
Nominal size 2.16378 0.00006 2.16039 0.00006
Min. and max. size 2.16372 2.16384 2.16033 2.16045
Wear ch. plug for GO snap gauge
Nominal size 2.16457 0.00006
Min. and max. size 2.16451 2.16463
Tolerances
Tolerances for gauges acc. to ISO 1502:1996
Gauges for external thread Gauges for internal thread
Tolerance Tr 0.00055 Tolerance Tr 0.00071
Tolerance Tpl 0.00035 Tolerance Tpl 0.00043
Tolerance Tcp 0.00031 Tolerance Tcp 0.00035
Value m 0.00059 Value m 0.00071
Value Zr 0.00008 Value Zr 0.00031
Value Zpl 0.00024 Value Zpl 0.00047
Admissible wear limit Wgo 0.00063 Admissible wear limit Wgo 0.00069
Admissible wear limit Wng 0.00047 Admissible wear limit Wng 0.00045
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Pitch tolerance 0.00020 Pitch tolerance 0.00020
Ring gauges Plug gauges
Max. radius r1 0.00142 Max. radius r2 0.00283
Max. clearance b1 0.00246 Max. clearance b2 0.00492
Max. clearance b3 0.00246 Max. clearance b3 0.00492
Gauges (full thread profile) Gauges (shortened thread profile)
Limit deviations for flank angle A1 25' Limit deviations for flank angle A2 25'
Plain gauges for major diameter Plain gauges for minor diameter
Tolerance for major diameter Z2 0.00079 Minor diameter - Tolerance Z1 0.00087
Tolerance for major diameter H2/2 0.00020 Minor diameter - Tolerance H1/2 0.00020
Tolerance for major diameter Hp/2 0.00006
Roundness DIN 2241:2005
Setting plug gauge Setting ring gauge
Tolerance Tcp (IT4) 0.00028 Tolerance Tr (IT4) 0.00055
Tolerance Tpl (IT4) 0.00028 Tolerance Tpl (IT4) 0.00035
Correction for gauge plating
Ring gauges Plug gauges
Correction for pitch diameter 0.00000 Correction for pitch diameter 0.00000
Correction for major and minor diameter 0.00000 Correction for major and minor diameter 0.00000
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