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      Thread Gauges

      Huge range of sizes and thread forms available from Insize and premium German supplier Johs Boss. Go and No-Go Thread Plug & Ring gauges in different tolerances.

        Shop Now Metric Coarse Thread Gauges

        Go & No-Go Plug & Ring gauges from Insize & premium German supplier JBO in metric coarse thread form.

        Shop Now Metric Fine Thread Gauges

        Go & No-Go Plug & Ring gauges from Insize & premium German supplier JBO in metric fine thread form.

        Shop Now UNC (Unified National Coarse) Thread Gauges

        Go & No-Go Plug & Ring gauges from Insize & premium German supplier JBO in unified national coarse (UNC) thread form.

        Shop Now UNF (Unified National Fine) Thread Gauges

        Go & No-Go Plug & Ring gauges from Insize & premium German supplier JBO in unified national fine (UNF) thread form.

        Shop Now BSP(G) (British Standard Pipe) Thread Gauges

        Go & No-Go Plug & Ring gauges from Insize & premium German supplier JBO in British Standard Pipe (BSP(G)) thread form.

        Shop Now BSPT (British Standard Pipe Taper) Thread Gauges

        Go & No-Go Plug & Ring gauges from Insize & premium German supplier JBO in British Standard Pipe Taper (BSPT) thread form.

        Shop Now BSW (British Standard Whitworth) Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in British Standard Whitworth (BSW) thread form.

        Shop Now BSF (British Standard Whitworth Fine) Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in British Standard Fine (BSF) thread form.

        Shop Now NPT (National Pipe Taper) Thread Gauges

        Go & No-Go Plug & Ring gauges from Insize & premium German supplier JBO in National Pipe Taper (NPT) thread form.

        Shop Now NPTF (National Pipe Taper Fine) Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in National Pipe Taper Fine (NPTF) thread form.

        Shop Now UN (Unified National) Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in Unified National (UN) thread form.

        Shop Now UNEF (Unified National Extra Fine) Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in Unified National Extra Fine (UNEF) thread form.

        Shop Now UNJC Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in UNJC thread form.

        Shop Now Trapezoidal Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in Trapezoidal (Tr) thread form.

        Shop Now Thread Repair Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in Thread Repair (STI) thread form.

        Shop Now Metric Fine Conduit Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in Metric Fine Conduit thread form.

        Shop Now PG Thread Gauges

        Go & No-Go Plug & Ring gauges from premium German supplier JBO in PG thread form.

      View Filters
      Filter Products
      Size
      1. 1
      2. 1 1/16“
      3. 1 1/2"
      4. 1 1/2“
      5. 1 1/4"
      6. 1 1/4“
      7. 1 1/8“
      8. 1 3/16“
      9. 1 3/4"
      10. 1 3/4“
      11. 1 3/8"
      12. 1 3/8“
      13. 1 5/16“
      14. 1 5/8“
      15. 1 7/16“
      16. 1 7/8“
      17. 1 9/16"
      18. 1 9/16“
      19. 1/16"
      20. 1/16“
      21. 1/2"
      22. 1/2“
      23. 1/4"
      24. 1/4“
      25. 1/8"
      26. 1/8“
      27. 10
      28. 11
      29. 11/16“
      30. 12
      31. 13.5
      32. 13/16“
      33. 14
      34. 15/16“
      35. 16
      36. 18
      37. 1“
      38. 2
      39. 2 1/2"
      40. 2 1/2“
      41. 2 1/4“
      42. 2 3/4"
      43. 2 3/4“
      44. 2"
      45. 20
      46. 21
      47. 22
      48. 24
      49. 26
      50. 28
      51. 29
      52. 2“
      53. 3
      54. 3 1/2"
      55. 3 1/2“
      56. 3/16“
      57. 3/4"
      58. 3/4“
      59. 3/8"
      60. 3/8“
      61. 30
      62. 32
      63. 36
      64. 3“
      65. 4
      66. 4 1/2“
      67. 42
      68. 48
      69. 4“
      70. 5
      71. 5 1/2“
      72. 5/16"
      73. 5/16“
      74. 5/8"
      75. 5/8“
      76. 5“
      77. 6
      78. 6“
      79. 7
      80. 7/16“
      81. 7/32“
      82. 7/8“
      83. 8
      84. 9
      85. 9/16“
      86. 9/32“
      87. M0.5
      88. M0.6
      89. M0.7
      90. M0.8
      91. M0.9
      92. M1
      93. M1.1
      94. M1.2
      95. M1.4
      96. M1.6
      97. M1.7
      98. M1.8
      99. M10
      100. M100
      101. M102
      102. M105
      103. M108
      104. M11
      105. M110
      106. M112
      107. M115
      108. M118
      109. M12
      110. M120
      111. M122
      112. M125
      113. M128
      114. M13
      115. M130
      116. M132
      117. M135
      118. M138
      119. M14
      120. M140
      121. M142
      122. M145
      123. M148
      124. M15
      125. M150
      126. M16
      127. M17
      128. M18
      129. M19
      130. M2
      131. M2.2
      132. M2.3
      133. M2.5
      134. M2.6
      135. M20
      136. M21
      137. M22
      138. M23
      139. M24
      140. M25
      141. M26
      142. M27
      143. M28
      144. M29
      145. M3
      146. M3.5
      147. M30
      148. M31
      149. M32
      150. M33
      151. M34
      152. M35
      153. M36
      154. M37
      155. M38
      156. M39
      157. M4
      158. M4.5
      159. M40
      160. M42
      161. M45
      162. M48
      163. M5
      164. M5.5
      165. M50
      166. M52
      167. M55
      168. M56
      169. M58
      170. M6
      171. M6.5
      172. M60
      173. M62
      174. M63
      175. M64
      176. M65
      177. M68
      178. M7
      179. M7.5
      180. M70
      181. M72
      182. M75
      183. M76
      184. M78
      185. M8
      186. M8.5
      187. M80
      188. M82
      189. M85
      190. M88
      191. M9
      192. M90
      193. M92
      194. M95
      195. M98
      196. No.0
      197. No.1
      198. No.10
      199. No.12
      200. No.2
      201. No.3
      202. No.4
      203. No.5
      204. No.6
      205. No.8
      Less
      Pitch
      1. 0.125
      2. 0.15
      3. 0.175
      4. 0.2
      5. 0.225
      6. 0.25
      7. 0.3
      8. 0.35
      9. 0.4
      10. 0.45
      11. 0.5
      12. 0.6
      13. 0.7
      14. 0.75
      15. 0.8
      16. 1
      17. 1.25
      18. 1.5
      19. 1.75
      20. 2
      21. 2.5
      22. 3
      23. 3.5
      24. 4
      25. 4.5
      26. 5
      27. 5.5
      28. 6
      Less
      TPI
      1. 0.125
      2. 0.15
      3. 0.175
      4. 0.2
      5. 0.225
      6. 0.25
      7. 0.3
      8. 0.35
      9. 0.4
      10. 0.45
      11. 0.5
      12. 0.6
      13. 0.7
      14. 0.75
      15. 0.8
      16. 1
      17. 1.25
      18. 1.5
      19. 1.75
      20. 10
      21. 11
      22. 11.5
      23. 12
      24. 13
      25. 14
      26. 16
      27. 18
      28. 19
      29. 2
      30. 2.5
      31. 20
      32. 22
      33. 24
      34. 26
      35. 27
      36. 28
      37. 3
      38. 3.5
      39. 32
      40. 36
      41. 4
      42. 4
      43. 4 1/2
      44. 4.5
      45. 40
      46. 44
      47. 48
      48. 5
      49. 5.5
      50. 56
      51. 6
      52. 6
      53. 64
      54. 7
      55. 72
      56. 8
      57. 8
      58. 80
      59. 9
      Less
      Price
      Less
      Thread Form
      1. BSF
      2. BSP(G)
      3. BSPT
      4. BSW
      5. Metric Coarse
      6. Metric Fine
      7. Metric Fine Conduit
      8. NPT
      9. NPTF
      10. Pg
      11. STI Metric Coarse
      12. STI Metric Fine
      13. STI UNC
      14. STI UNF
      15. Trapezoidal
      16. UN
      17. UNC
      18. UNEF
      19. UNF
      20. UNJC
      21. UNJF
      Less
      Plug or Ring
      1. Plug Gauge
      2. Ring Gauge
      Less
      Type
      1. Go
      2. Go/No-Go
      3. No-Go
      Less
      Calibrated
      1. No
      2. Yes
      Less
      Tolerance
      1. 2A
      2. 2B
      3. 3A
      4. 3B
      5. 4H
      6. 6e
      7. 6G
      8. 6H
      9. 6H
      10. 7e
      11. 7H
      12. A
      13. B
      Less
      Hand
      1. Left
      2. Right
      Less
      Coating
      1. DLC Coated
      2. Oil Hardened
      3. TiCN
      Less
      Brand
      1. Insize
      2. JBO (Johs Boss)
      Less