THREAD M55 x .5

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


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


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

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


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

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. 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. 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


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


Flank angle and profile (compl.) 30 25' complete 30 25'' complete

Flank angle and profile (trunc.) 30 25' truncated 30 25'' truncated


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


Major diameter 2.16457 0.00035 2.16039 0.00035



Flank angle and profile 30 25' complete 30 25' complete


Screw setting gauges for measuring instruments acc. to DIN 2241:2005

Setting plug gauge Setting ring gauge


Min. and max. major diameter 2.16429 2.16457 2.16713

Min. and max. minor diameter 2.13759 2.14406 2.14461



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


Major diameter 2.16457 0.00035 2.16457 0.00035





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


Major diameter 2.15591 0.00018 2.16039 0.00035



Flank angle and profile 30 25' truncated 30 25' complete


Wear ch. plug for GO ring Wear ch. plug for NOT GO ring

Pitch diameter 2.15232 0.00016 2.14780 0.00016


Major diameter 2.15626 0.00018 2.16059 0.00035



Flank angle and profile 30 25' truncated 30 25' complete


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

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

Documents

THREAD M55 x .5