Gauges for checking trapezoidal threads

 

  • THREAD
  • GAUGES
  • Nominal sizes
  • Nominal sizes
  • Tolerances
  • Tolerances
Tr10 x 2 - 8c
external (bolt)
Trapezoidal thread - dimensions and basic profile
Name Symb. Value Unit Remarks
Nominal diameter 10 [mm] first choice
Pitch P 2 [mm] preferred
Lead Ph 2 [mm]
Number of starts 1 [-]
Thread angle α 30°
Flank angle β 15°
Tolerance class 8c [-]
Major diameter d 10,000 [mm] 9,820 ÷ 10,000
Pitch diameter d2 9,000 [mm] 8,614 ÷ 8,850
Minor diameter d3 7,500 [mm] 7,055 ÷ 7,500
Crest clearance ac 0,25 [mm]
Height of thread h3 1,25 [mm]
Radius R1max 0,125 [mm]
R2max 0,25 [mm]
Height H 3,732 [mm]
Height of the overlapping H1 1 2) [mm]
Distance H/2 1,866 [mm]
0.366P 0,732 [mm]
z 0,5 [mm]
Acc. to ISO 2901:1993, ISO 2902:1977, ISO 2904:1977
2) The height of the overlapping, considering on the basic profile, has value of height of basic profile (h3) .
The image of external (bolt) trapezoidal thread with tolerance positions
Major diameter
Basic d 10,000 mm
Minimum dmin 9,820 mm
Maximum dmax 10,000 mm
Tolerance Td 180 µm
Upper deviation (fundamental) es 0 µm
Lower deviation ei -180 µm
Pitch diameter
Basic d2 9,000 mm
Minimum d2 min 8,614 mm
Maximum d2 max 8,850 mm
Tolerance Td2 236 µm
Upper deviation (fundamental) es -150 µm
Lower deviation ei -386 µm
Minor diameter
Basic d3 7,500 mm
Minimum d3 min 7,055 mm
Maximum d3 max 7,500 mm
Tolerance Td3 445 µm
Upper deviation (fundamental) es 0 µm
Lower deviation ei -445 µm
Acc. to ISO 2903:1993, PN‑ISO 2903/Ak:1996
  • THREAD
  • GAUGES
  • Limits of sizes
  • Limits of sizes
  • Tolerances and permissible wear
  • Tolerances and permissible wear
Tr10 x 2 - 8c
external (bolt)
Sizes in millimetres
Name Major
diameter		 Pitch
diameter		 Minor
diameter		 Remarks
GO
Button 'more' Button 'less' SOLID SCREW RING 10,500 8,8331) ± 0,01651) 8,000 ± 0,0165
GO check plug 10,000 ± 0,020 8,805 ± 0,0085 7,500
NOT GO check plug 9,2495 ± 0,010 8,8495 ± 0,0085 7,500
Wear check plug 9,270 ± 0,010 8,870 ± 0,0085 7,500
Button 'more' Button 'less' SCREW CALLIPER — 2) — 2) — 2)
Setting plug 10,000 ± 0,020 8,805 ± 0,0085 7,500
Button 'more' Button 'less' PLAIN CALLIPER A size corresponding to the basic diameter:   9,962 ± 0,008
GO check plug Basic diameter:   9,962 ± 0,002
PLAIN RING Basic diameter:   9,962 ± 0,008
NOT GO
Button 'more' Button 'less' SOLID SCREW RING 10,500 8,59751) ± 0,01651) 8,1975 ± 0,033
GO check plug 10,000 ± 0,020 8,5695 ± 0,0085 7,264
NOT GO check plug 9,764 ± 0,020 8,614 ± 0,0085 7,264
Wear check plug 9,7755 ± 0,020 8,6255 ± 0,0085 7,264
Button 'more' Button 'less' SCREW CALLIPER — 2) — 2) — 2)
Setting plug 9,764 ± 0,020 8,589 ± 0,0085 7,264
Button 'more' Button 'less' PLAIN CALLIPER A size corresponding to the basic diameter:   9,820 ± 0,008
NOT GO check plug Basic diameter:   9,820 ± 0,002
PLAIN RING Basic diameter:   9,820 ± 0,008
Acc. to DIN 103‑9:1985
1) These sizes shall apply if the new solid screw ring gauges are not produced in accordance withe the GO check plugs but are measured; this shall be subject to agreement.
2) The profile sizes of the anvils of screw calliper gauges are equal to these of new solid GO screw ring gauges or NOT GO screw ring gauges. The tolerance on radial run-out for circular shaped anvils shall be 5 μm.
Figure presenting tolerance zones for the pitch diameter of gauges for checking external threads Figure presenting tolerance zones for gauges for checking the major diameter of external threads
Name Symbol Value
Tolerance of the ring gauge TR 33 µm
Tolerance of the plug gauge TPL 20 µm
Tolerance of check, wear and setting plugs TCP 17 µm
Distance m 28 µm
Distance ZR 17 µm
Permissible wear on the GO screw gauges WGO 37 µm
Permissible wear on the NOT GO screw gauges WNG 28 µm
Half-tolerance H2/2 8 µm
Half-tolerance HP/2 2 µm
Distance Z2 38 µm
Half-tolerance Tα1/2 10′
Half-tolerance Tα2/2 14′
Acc. to DIN 103‑9:1985
Back to gauges list
SOLID GO SCREW RING GAUGE |T1|
Major diameter a) 10,500 [mm]
Pitch diameter 8,8331)± 0,01651) [mm] 8,8165 ÷ 8,8495
Minor diameter 8,000 ± 0,0165 [mm] 7,9835 ÷ 8,0165
Wear limit of gauge 8,870 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
1) These sizes shall apply if the new solid screw ring gauges are not produced in accordance withe the GO check plugs but are measured; this shall be subject to agreement.
a) With a radius of maximum R2max = 0,25 mm.
GO CHECK PLUG FOR NEW SOLID GO SCREW RING GAUGE |T2|
Major diameter 10,000 ± 0,020 [mm] 9,980 ÷ 10,020
Pitch diameter 8,805 ± 0,0085 [mm] 8,7965 ÷ 8,8135
Minor diameter a) 7,500 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
NOT GO CHECK PLUG FOR NEW SOLID GO SCREW RING GAUGE |T3|
Major diameter 9,2495 ± 0,010 [mm] 9,2395 ÷ 9,2595
Pitch diameter 8,8495 ± 0,0085 [mm] 8,841 ÷ 8,858
Clearing diameter a) 7,500 [mm]
Flank angle 15° ± 14′
Profile truncated b)
Figure presenting profile with complete flanks
a) With a clearance groove of b = 0,85 ± 0,05 [mm].
b) Dimension F1 = 0,2 mm.
WEAR CHECK PLUG FOR SOLID GO SCREW RING GAUGE |T4|
Major diameter 9,270 ± 0,010 [mm] 9,260 ÷ 9,280
Pitch diameter 8,870 ± 0,0085 [mm] 8,8615 ÷ 8,8785
Clearing diameter a) 7,500 [mm]
Flank angle 15° ± 14′
Profile truncated b)
Figure presenting profile with complete flanks
a) With a clearance groove of b = 0,85 ± 0,05 [mm].
b) Dimension F1 = 0,2 mm.
GO SCREW CALLIPER GAUGE |T5|
A size corresponding to the major diameter — 2) a) [mm]
A size corresponding to the pitch diameter — 2) [mm]
A size corresponding to the minor diameter — 2) [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
2) The profile sizes of the anvils of screw calliper gauges are equal to these of new solid GO screw ring gauges or NOT GO screw ring gauges. The tolerance on radial run-out for circular shaped anvils shall be 5 μm.
a) With a radius of maximum R2max = 0,25 mm.
SETTING PLUG FOR GO SCREW CALLIPER GAUGE |T6|
Major diameter 10,000 ± 0,020 [mm] 9,980 ÷ 10,020
Pitch diameter 8,805 ± 0,0085 [mm] 8,7965 ÷ 8,8135
Minor diameter a) 7,500 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
PLAIN GO CALLIPER GAUGE FOR THE MAJOR DIAMETER |T13|
A size corresponding to the basic diameter 9,962 ± 0,008 [mm] 9,954 ÷ 9,970
Wear limit of gauge 10,000 3) [mm]
3) The wear limit for GO gauges is the upper limit of size for the major diameter of the external thread.
GO CHECK PLUG FOR NEW PLAIN GO CALLIPER GAUGE |T19|
Basic diameter 9,962 ± 0,002 [mm] 9,960 ÷ 9,964
PLAIN GO RING GAUGE FOR MAJOR DIAMETER
Basic diameter 9,962 ± 0,008 [mm] 9,954 ÷ 9,970
Wear limit of gauge 10,000 3) [mm]
3) The wear limit for GO gauges is the upper limit of size for the major diameter of the external thread.
SOLID NOT GO SCREW RING GAUGE |T9|
Clearing diameter a) 10,500 [mm]
Pitch diameter 8,59751)± 0,01651) [mm] 8,581 ÷ 8,614
Minor diameter 8,1975 ± 0,033 [mm] 8,1645 ÷ 8,2305
Wear limit of gauge 8,6255 [mm]
Flank angle 15° ± 14′
Profile truncated b)
Figure presenting profile with complete flanks
1) These sizes shall apply if the new solid screw ring gauges are not produced in accordance withe the GO check plugs but are measured; this shall be subject to agreement.
a) With a clearance groove of b = 0,85 ± 0,05 [mm].
b) Dimension F1 = 0,2 mm.
GO CHECK PLUG FOR NEW SOLID NOT GO SCREW RING GAUGE |T10|
Major diameter 10,000 ± 0,020 [mm] 9,980 ÷ 10,020
Pitch diameter 8,5695 ± 0,0085 [mm] 8,561 ÷ 8,578
Minor diameter a) 7,264 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
NOT GO CHECK PLUG FOR NEW SOLID NOT GO SCREW RING GAUGE |T11|
Major diameter 9,764 ± 0,020 [mm] 9,744 ÷ 9,784
Pitch diameter 8,614 ± 0,0085 [mm] 8,6055 ÷ 8,6225
Minor diameter a) 7,264 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
WEAR CHECK PLUG FOR SOLID NOT GO SCREW RING GAUGE |T12|
Major diameter 9,7755 ± 0,020 [mm] 9,7555 ÷ 9,7955
Pitch diameter 8,6255 ± 0,0085 [mm] 8,617 ÷ 8,634
Minor diameter a) 7,264 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
NOT GO SCREW CALLIPER GAUGE |T7|
A size corresponding to the clearing diameter — 2) a) [mm]
A size corresponding to the pitch diameter — 2) [mm]
A size corresponding to the minor diameter — 2) [mm]
Flank angle 15° ± 14′
Profile truncated b)
Figure presenting profile with complete flanks
2) The profile sizes of the anvils of screw calliper gauges are equal to these of new solid GO screw ring gauges or NOT GO screw ring gauges. The tolerance on radial run-out for circular shaped anvils shall be 5 μm.
a) With a clearance groove of b = 0,85 ± 0,05 [mm].
b) Dimension F1 = 0,2 mm.
SETTING PLUG FOR NOT GO SCREW CALLIPER GAUGE|T8|
Major diameter 9,764 ± 0,020 [mm] 9,744 ÷ 9,784
Pitch diameter 8,589 ± 0,0085 [mm] 8,5805 ÷ 8,5975
Minor diameter a) 7,264 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
PLAIN NOT GO CALLIPER GAUGE FOR MAJOR DIAMETER |14|
A size corresponding to the basic diameter 9,820 ± 0,008 [mm] 9,812 ÷ 9,828
NOT GO CHECK PLUG FOR NEW PLAIN NOT GO CALLIPER GAUGE |T20|
Basic diameter 9,820 ± 0,002 [mm] 9,818 ÷ 9,822
PLAIN NOT GO RING GAUGE FOR THE MAJOR DIAMETER |T14|
Basic diameter 9,820 ± 0,008 [mm] 9,812 ÷ 9,828

Thread basic dimensions

Tr10 x 2 - 8c
external (bolt)
Trapezoidal thread - dimensions and basic profile
Name Symb. Value Unit Remarks
Nominal diameter 10 [mm] first choice
Pitch P 2 [mm] preferred
Lead Ph 2 [mm]
Number of starts 1 [-]
Thread angle α 30°
Flank angle β 15°
Tolerance class 8c [-]
Major diameter d 10,000 [mm] 9,820 ÷ 10,000
Pitch diameter d2 9,000 [mm] 8,614 ÷ 8,850
Minor diameter d3 7,500 [mm] 7,055 ÷ 7,500
Crest clearance ac 0,25 [mm]
Height of thread h3 1,25 [mm]
Radius R1max 0,125 [mm]
R2max 0,25 [mm]
Height H 3,732 [mm]
Height of the overlapping H1 1 2) [mm]
Distance H/2 1,866 [mm]
0.366P 0,732 [mm]
z 0,5 [mm]
Acc. to ISO 2901:1993, ISO 2902:1977, ISO 2904:1977
2) The height of the overlapping, considering on the basic profile, has value of height of basic profile (h3) .

Thread tolerances

Tr10 x 2 - 8c
external (bolt)
The image of external (bolt) trapezoidal thread with tolerance positions
Major diameter
Basic d 10,000 mm
Minimum dmin 9,820 mm
Maximum dmax 10,000 mm
Tolerance Td 180 µm
Upper deviation (fundamental) es 0 µm
Lower deviation ei -180 µm
Pitch diameter
Basic d2 9,000 mm
Minimum d2 min 8,614 mm
Maximum d2 max 8,850 mm
Tolerance Td2 236 µm
Upper deviation (fundamental) es -150 µm
Lower deviation ei -386 µm
Minor diameter
Basic d3 7,500 mm
Minimum d3 min 7,055 mm
Maximum d3 max 7,500 mm
Tolerance Td3 445 µm
Upper deviation (fundamental) es 0 µm
Lower deviation ei -445 µm
Acc. to ISO 2903:1993, PN‑ISO 2903/Ak:1996

Limits of sizes of gauges

Tr10 x 2 - 8c
external (bolt)
SOLID GO SCREW RING GAUGE |T1|
Major diameter a) 10,500 [mm]
Pitch diameter 8,8331)± 0,01651) [mm] 8,8165 ÷ 8,8495
Minor diameter 8,000 ± 0,0165 [mm] 7,9835 ÷ 8,0165
Wear limit of gauge 8,870 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
1) These sizes shall apply if the new solid screw ring gauges are not produced in accordance withe the GO check plugs but are measured; this shall be subject to agreement.
a) With a radius of maximum R2max = 0,25 mm.
GO CHECK PLUG FOR NEW SOLID GO SCREW RING GAUGE |T2|
Major diameter 10,000 ± 0,020 [mm] 9,980 ÷ 10,020
Pitch diameter 8,805 ± 0,0085 [mm] 8,7965 ÷ 8,8135
Minor diameter a) 7,500 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
NOT GO CHECK PLUG FOR NEW SOLID GO SCREW RING GAUGE |T3|
Major diameter 9,2495 ± 0,010 [mm] 9,2395 ÷ 9,2595
Pitch diameter 8,8495 ± 0,0085 [mm] 8,841 ÷ 8,858
Clearing diameter a) 7,500 [mm]
Flank angle 15° ± 14′
Profile truncated b)
Figure presenting profile with complete flanks
a) With a clearance groove of b = 0,85 ± 0,05 [mm].
b) Dimension F1 = 0,2 mm.
WEAR CHECK PLUG FOR SOLID GO SCREW RING GAUGE |T4|
Major diameter 9,270 ± 0,010 [mm] 9,260 ÷ 9,280
Pitch diameter 8,870 ± 0,0085 [mm] 8,8615 ÷ 8,8785
Clearing diameter a) 7,500 [mm]
Flank angle 15° ± 14′
Profile truncated b)
Figure presenting profile with complete flanks
a) With a clearance groove of b = 0,85 ± 0,05 [mm].
b) Dimension F1 = 0,2 mm.
GO SCREW CALLIPER GAUGE |T5|
A size corresponding to the major diameter — 2) a) [mm]
A size corresponding to the pitch diameter — 2) [mm]
A size corresponding to the minor diameter — 2) [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
2) The profile sizes of the anvils of screw calliper gauges are equal to these of new solid GO screw ring gauges or NOT GO screw ring gauges. The tolerance on radial run-out for circular shaped anvils shall be 5 μm.
a) With a radius of maximum R2max = 0,25 mm.
SETTING PLUG FOR GO SCREW CALLIPER GAUGE |T6|
Major diameter 10,000 ± 0,020 [mm] 9,980 ÷ 10,020
Pitch diameter 8,805 ± 0,0085 [mm] 8,7965 ÷ 8,8135
Minor diameter a) 7,500 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
PLAIN GO CALLIPER GAUGE FOR THE MAJOR DIAMETER |T13|
A size corresponding to the basic diameter 9,962 ± 0,008 [mm] 9,954 ÷ 9,970
Wear limit of gauge 10,000 3) [mm]
3) The wear limit for GO gauges is the upper limit of size for the major diameter of the external thread.
GO CHECK PLUG FOR NEW PLAIN GO CALLIPER GAUGE |T19|
Basic diameter 9,962 ± 0,002 [mm] 9,960 ÷ 9,964
PLAIN GO RING GAUGE FOR MAJOR DIAMETER
Basic diameter 9,962 ± 0,008 [mm] 9,954 ÷ 9,970
Wear limit of gauge 10,000 3) [mm]
3) The wear limit for GO gauges is the upper limit of size for the major diameter of the external thread.
SOLID NOT GO SCREW RING GAUGE |T9|
Clearing diameter a) 10,500 [mm]
Pitch diameter 8,59751)± 0,01651) [mm] 8,581 ÷ 8,614
Minor diameter 8,1975 ± 0,033 [mm] 8,1645 ÷ 8,2305
Wear limit of gauge 8,6255 [mm]
Flank angle 15° ± 14′
Profile truncated b)
Figure presenting profile with complete flanks
1) These sizes shall apply if the new solid screw ring gauges are not produced in accordance withe the GO check plugs but are measured; this shall be subject to agreement.
a) With a clearance groove of b = 0,85 ± 0,05 [mm].
b) Dimension F1 = 0,2 mm.
GO CHECK PLUG FOR NEW SOLID NOT GO SCREW RING GAUGE |T10|
Major diameter 10,000 ± 0,020 [mm] 9,980 ÷ 10,020
Pitch diameter 8,5695 ± 0,0085 [mm] 8,561 ÷ 8,578
Minor diameter a) 7,264 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
NOT GO CHECK PLUG FOR NEW SOLID NOT GO SCREW RING GAUGE |T11|
Major diameter 9,764 ± 0,020 [mm] 9,744 ÷ 9,784
Pitch diameter 8,614 ± 0,0085 [mm] 8,6055 ÷ 8,6225
Minor diameter a) 7,264 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
WEAR CHECK PLUG FOR SOLID NOT GO SCREW RING GAUGE |T12|
Major diameter 9,7755 ± 0,020 [mm] 9,7555 ÷ 9,7955
Pitch diameter 8,6255 ± 0,0085 [mm] 8,617 ÷ 8,634
Minor diameter a) 7,264 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
NOT GO SCREW CALLIPER GAUGE |T7|
A size corresponding to the clearing diameter — 2) a) [mm]
A size corresponding to the pitch diameter — 2) [mm]
A size corresponding to the minor diameter — 2) [mm]
Flank angle 15° ± 14′
Profile truncated b)
Figure presenting profile with complete flanks
2) The profile sizes of the anvils of screw calliper gauges are equal to these of new solid GO screw ring gauges or NOT GO screw ring gauges. The tolerance on radial run-out for circular shaped anvils shall be 5 μm.
a) With a clearance groove of b = 0,85 ± 0,05 [mm].
b) Dimension F1 = 0,2 mm.
SETTING PLUG FOR NOT GO SCREW CALLIPER GAUGE|T8|
Major diameter 9,764 ± 0,020 [mm] 9,744 ÷ 9,784
Pitch diameter 8,589 ± 0,0085 [mm] 8,5805 ÷ 8,5975
Minor diameter a) 7,264 [mm]
Flank angle 15° ± 10′
Profile complete
Figure presenting profile with complete flanks
a) With a radius of maximum R2max = 0,25 mm.
PLAIN NOT GO CALLIPER GAUGE FOR MAJOR DIAMETER |14|
A size corresponding to the basic diameter 9,820 ± 0,008 [mm] 9,812 ÷ 9,828
NOT GO CHECK PLUG FOR NEW PLAIN NOT GO CALLIPER GAUGE |T20|
Basic diameter 9,820 ± 0,002 [mm] 9,818 ÷ 9,822
PLAIN NOT GO RING GAUGE FOR THE MAJOR DIAMETER |T14|
Basic diameter 9,820 ± 0,008 [mm] 9,812 ÷ 9,828

Tolerances and permissible wear of gauges

Tr10 x 2 - 8c
external (bolt)
Figure presenting tolerance zones for the pitch diameter of gauges for checking external threads Figure presenting tolerance zones for gauges for checking the major diameter of external threads
Name Symbol Value
Tolerance of the ring gauge TR 33 µm
Tolerance of the plug gauge TPL 20 µm
Tolerance of check, wear and setting plugs TCP 17 µm
Distance m 28 µm
Distance ZR 17 µm
Permissible wear on the GO screw gauges WGO 37 µm
Permissible wear on the NOT GO screw gauges WNG 28 µm
Half-tolerance H2/2 8 µm
Half-tolerance HP/2 2 µm
Distance Z2 38 µm
Half-tolerance Tα1/2 10′
Half-tolerance Tα2/2 14′
Acc. to DIN 103‑9:1985

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