Inch Thread Gage Pitch Diameters

(Sizes #0 Through 1/2")

Typical thread class usage:

A class 1A external thread and a class 1B internal thread gives a loose fit.

A class 2A external thread and a class 2B internal thread gives a normal fit.

A class 3A external thread and a class 3B internal thread gives a close fit.

Classes 1A, 2A, and 3A gages are thread ring gages to check external threads.

Classes 1B, 2B, and 3B gages are thread plug gages to check internal threads.

Next Page
Fractional Thread Size
Decimal Thread Size
Go Pitch Diameter

(P.D.)

No Go Pitch Diameter

(P.D.)

#0-80 UNF-1A
.0600-80 UNF-1A
.0514"
.0488"
#0-80 UNF-1B
.0600-80 UNF-1B
.0519"
.0553"
#0-80 UNF-2A
.0600-80 UNF-2A
.0514"
.0496"
#0-80 UNF-2B
.0600-80 UNF-2B
.0519"
.0542"
#0-80 UNF-3A
.0600-80 UNF-3A
.0519"
.0506"
#0-80 UNF-3B
.0600-80 UNF-3B
.0519"
.0536"
#1-64 UNC-1A
.0730-64 UNC-1A
.0623"
.0593"
#1-64 UNC-1B
.0730-64 UNC-1B
.0629"
.0667"
#1-64 UNC-2A
.0730-64 UNC-2A
.0623"
.0603"
#1-64 UNC-2B
.0730-64 UNC-2B
.0629"
.0655"
#1-64 UNC-3A
.0730-64 UNC-3A
.0629"
.0614"
#1-64 UNC-3B
.0730-64 UNC-3B
.0629"
.0648"
#1-72 UNF-1A
.0730-72 UNF-1A
.0634"
.0606"
#1-72 UNF-1B
.0730-72 UNF-1B
.0640"
.0677"
#1-72 UNF-2A
.0730-72 UNF-2A
.0634"
.0615"
#1-72 UNF-2B
.0730-72 UNF-2B
.0640"
.0665"
#1-72 UNF-3A
.0730-72 UNF-3A
.0640"
.0626"
#1-72 UNF-3B
.0730-72 UNF-3B
.0640"
.0659"
#2-56 UNC-1A
.0860-56 UNC-1A
.0738"
.0706"
#2-56 UNC-1B
.0860-56 UNC-1B
.0744"
.0785"
#2-56 UNC-2A
.0860-56 UNC-2A
.0738"
.0717"
#2-56 UNC-2B
.0860-56 UNC-2B
.0744"
.0772"
#2-56 UNC-3A
.0860-56 UNC-3A
.0744"
.0728"
#2-56 UNC-3B
.0860-56 UNC-3B
.0744"
.0765"
#2-64 UNF-1A
.0860-64 UNF-1A
.0753"
.0722"
#2-64 UNF-1B
.0860-64 UNF-1B
.0759"
.0799"
#2-64 UNF-2A
.0860-64 UNF-2A
.0753"
.0733"
#2-64 UNF-2B
.0860-64 UNF-2B
.0759"
.0786"
#2-64 UNF-3A
.0860-64 UNF-3A
.0759"
.0744"
#2-64 UNF-3B
.0860-64 UNF-3B
.0759"
.0779"
#3-48 UNC-1A
.0990-48 UNC-1A
.0848"
.0813"
#3-48 UNC-1B
.0990-48 UNC-1B
.0855"
.0900"
#3-48 UNC-2A
.0990-48 UNC-2A
.0848"
.0825"
#3-48 UNC-2B
.0990-48 UNC-2B
.0855"
.0885"
#3-48 UNC-3A
.0990-48 UNC-3A
.0855"
.0838"
#3-48 UNC-3B
.0990-48 UNC-3B
.0855"
.0877"
#3-56 UNF-1A
.0990-56 UNF-2A
.0867"
.0834"
#3-56 UNF-1B
.0990-56 UNF-2B
.0874"
.0917"
#3-56 UNF-2A
.0990-56 UNF-2A
.0867"
.0845"
#3-56 UNF-2B
.0990-56 UNF-2B
.0874"
.0902"
#3-56 UNF-3A
.0990-56 UNF-3A
.0874"
.0858"
#3-56 UNF-3B
.0990-56 UNF-3B
.0874"
.0895"
#4-40 UNC-1A
.1120-40 UNC-1A
.0950"
.0912"
#4-40 UNC-1B
.1120-40 UNC-1B
.0958"
.1007"
#4-40 UNC-2A
.1120-40 UNC-2A
.0950"
.0925"
#4-40 UNC-2B
.1120-40 UNC-2B
.0958"
.0991"
#4-40 UNC-3A
.1120-40 UNC-3A
.0958"
.0939"
#4-40 UNC-3B
.1120-40 UNC-3B
.0958"
.0982"
#4-48 UNF-1A
.1120-48 UNF-1A
.0978"
.0943"
#4-48 UNF-1B
.1120-48 UNF-1B
.0985"
.1031"
#4-48 UNF-2A
.1120-48 UNF-2A
.0978"
.0954"
#4-48 UNF-2B
.1120-48 UNF-2B
.0985"
.1016"
#4-48 UNF-3A
.1120-48 UNF-3A
.0985"
.0967"
#4-48 UNF-3B
.1120-48 UNF-3B
.0985"
.1008"
#5-40 UNC-1A
.1250-40 UNC-1A
.1080"
.1042"
#5-40 UNC-1B
.1250-40 UNC-1B
.1088"
.1138"
#5-40 UNC-2A
.1250-40 UNC-2A
.1080"
.1054"
#5-40 UNC-2B
.1250-40 UNC-2B
.1088"
.1121"
#5-40 UNC-3A
.1250-40 UNC-3A
.1088"
.1069"
#5-40 UNC-3B
.1250-40 UNC-3B
.1088"
.1113"
#5-44 UNF-1A
.1250-44 UNF-1A
.1095"
.1058"
#5-44 UNF-1B
.1250-44 UNF-1B
.1102"
.1150"
#5-44 UNF-2A
.1250-44 UNF-2A
.1095"
.1070"
#5-44 UNF-2B
.1250-44 UNF-2B
.1102"
.1134"
#5-44 UNF-3A
.1250-44 UNF-3A
.1102"
.1083"
#5-44 UNF-3B
.1250-44 UNF-3B
.1102"
.1126"
#6-32 UNC-1A
.1380-32 UNC-1A
.1169"
.1127"
#6-32 UNC-1B
.1380-32 UNC-1B
.1177"
.1232"
#6-32 UNC-2A
.1380-32 UNC-2A
.1169"
.1141"
#6-32 UNC-2B
.1380-32 UNC-2B
.1177"
.1214"
#6-32 UNC-3A
.1380-32 UNC-3A
.1177"
.1156"
#6-32 UNC-3B
.1380-32 UNC-3B
.1177"
.1204"
#6-40 UNF-1A
.1380-40 UNF-1A
.1210"
.1171"
#6-40 UNF-1B
.1380-40 UNF-1B
.1218"
.1269"
#6-40 UNF-2A
.1380-40 UNF-2A
.1210"
.1184"
#6-40 UNF-2B
.1380-40 UNF-2B
.1218"
.1252"
#6-40 UNF-3A
.1380-40 UNF-3A
.1218"
.1198"
#6-40 UNF-3B
.1380-40 UNF-3B
.1218"
.1243"
#8-32 UNC-1A
.1640-32 UNC-1A
.1428"
.1384"
#8-32 UNC-1B
.1640-32 UNC-1B
.1437"
.1494"
#8-32 UNC-2A
.1640-32 UNC-2A
.1428"
.1399"
#8-32 UNC-2B
.1640-32 UNC-2B
.1437"
.1475"
#8-32 UNC-3A
.1640-32 UNC-3A
.1437"
.1415"
#8-32 UNC-3B
.1640-32 UNC-3B
.1437"
.1465"
#8-36 UNF-1A
.1640-36 UNF-1A
.1452"
.1410"
#8-36 UNF-1B
.1640-36 UNF-1B
.1460"
.1515"
#8-36 UNF-2A
.1640-36 UNF-2A
.1452"
.1424"
#8-36 UNF-2B
.1640-36 UNF-2B
.1460"
.1496"
#8-36 UNF-3A
.1640-36 UNF-3A
.1460"
.1439"
#8-36 UNF-3B
.1640-36 UNF-3B
.1460"
.1487"
#10-24 UNC-1A
.1900-24 UNC-1A
.1619"
.1569"
#10-24 UNC-1B
.1900-24 UNC-2B
.1629"
.1694"
#10-24 UNC-2A
.1900-24 UNC-2A
.1619"
.1586"
#10-24 UNC-2B
.1900-24 UNC-2B
.1629"
.1672"
#10-24 UNC-3A
.1900-24 UNC-3A
.1629"
.1604"
#10-24 UNC-3B
.1900-24 UNC-3B
.1629"
.1661"
#10-28 UNS-1A
.1900-28 UNS-1A
.1658"
.1608"
#10-28 UNS-1B
.1900-28 UNS-1B
.1668"
.1733"
#10-28 UNS-2A
.1900-28 UNS-2A
.1658"
.1625"
#10-28 UNS-2B
.1900-28 UNS-2B
.1668"
.1711"
#10-28 UNS-3A
.1900-28 UNS-3A
.1668"
.1643"
#10-28 UNS-3B
.1900-28 UNS-3B
.1668"
.1701"
#10-32 UNF-1A
.1900-32 UNF-1A
.1688"
.1643"
#10-32 UNF-1B
.1900-32 UNF-1B
.1697"
.1756"
#10-32 UNF-2A
.1900-32 UNF-2A
.1688"
.1658"
#10-32 UNF-2B
.1900-32 UNF-2B
.1697"
.1736"
#10-32 UNF-3A
.1900-32 UNF-3A
.1697"
.1674"
#10-32 UNF-3B
.1900-32 UNF-3B
.1697"
.1726"
#10-36 UNS-1A
.1900-36 UNS-1A
.1711"
.1666"
#10-36 UNS-1B
.1900-36 UNS-1B
.1720"
.1778"
#10-36 UNS-2A
.1900-36 UNS-2A
.1711"
.1681"
#10-36 UNS-2B
.1900-36 UNS-2B
.1720"
.1759"
#10-36 UNS-3A
.1900-36 UNS-3A
.1720"
.1698"
#10-36 UNS-3B
.1900-36 UNS-3B
.1720"
.1749"
#10-40 UNS-1A
.1900-40 UNS-1A
.1729"
.1686"
#10-40 UNS-1B
.1900-40 UNS-1B
.1738"
.1794"
#10-40 UNS-2A
.1900-40 UNS-2A
.1729"
.1700"
#10-40 UNS-2B
.1900-40 UNS-2B
.1738"
.1775"
#10-40 UNS-3A
.1900-40 UNS-3A
.1738"
.1717"
#10-40 UNS-3B
.1900-40 UNS-3B
.1738"
.1766"
#10-48 UNS-1A
.1900-48 UNS-1A
.1757"
.1717"
#10-48 UNS-1B
.1900-48 UNS-1B
.1765"
.1817"
#10-48 UNS-2A
.1900-48 UNS-2A
.1757"
.1731"
#10-48 UNS-2B
.1900-48 UNS-2B
.1765"
.1799"
#10-48 UNS-3A
.1900-48 UNS-3A
.1765"
.1745"
#10-48 UNS-3B
.1900-48 UNS-3B
.1765"
.1791"
#10-56 UNS-1A
.1900-56 UNS-1A
.1777"
.1740"
#10-56 UNS-1B
.1900-56 UNS-1B
.1784"
.1833"
#10-56 UNS-2A
.1900-56 UNS-2A
.1777"
.1752"
#10-56 UNS-2B
.1900-56 UNS-2B
.1784"
.1816"
#10-56 UNS-3A
.1900-56 UNS-3A
.1784"
.1765"
#10-56 UNS-3B
.1900-56 UNS-3B
.1784"
.1808"
#12-24 UNC-1A
.2160-24 UNC-1A
.1879"
.1828"
#12-24 UNC-1B
.2160-24 UNC-1B
.1889"
.1955"
#12-24 UNC-2A
.2160-24 UNC-2A
.1879"
.1845"
#12-24 UNC-2B
.2160-24 UNC-2B
.1889"
.1933"
#12-24 UNC-3A
.2160-24 UNC-3A
.1889"
.1863"
#12-24 UNC-3B
.2160-24 UNC-3B
.1889"
.1922"
#12-28 UNF-1A
.2160-28 UNF-1A
.1918"
.1870"
#12-28 UNF-1B
.2160-28 UNF-1B
.1928"
.1991"
#12-28 UNF-2A
.2160-28 UNF-2A
.1918"
.1886"
#12-28 UNF-2B
.2160-28 UNF-2B
.1928"
.1970"
#12-28 UNF-3A
.2160-28 UNF-3A
.1928"
.1904"
#12-28 UNF-3B
.2160-28 UNF-3B
.1928"
.1959"
#12-32 UNEF-1A
.2160-32 UNEF-1A
.1947"
.1899"
#12-32 UNEF-1B
.2160-32 UNEF-1B
.1957"
.2019"
#12-32 UNEF-2A
.2160-32 UNEF-2A
.1947"
.1915"
#12-32 UNEF-2B
.2160-32 UNEF-2B
.1957"
.1998"
#12-32 UNEF-3A
.2160-32 UNEF-3A
.1957"
.1933"
#12-32 UNEF-3B
.2160-32 UNEF-3B
.1957"
.1988"
#12-36 UNS-1A
.2160-36 UNS-1A
.1971"
.1926"
#12-36 UNS-1B
.2160-36 UNS-1B
.1980"
.2039"
#12-36 UNS-2A
.2160-36 UNS-2A
.1971"
.1941"
#12-36 UNS-2B
.2160-36 UNS-2B
.1980"
.2019"
#12-36 UNS-3A
.2160-36 UNS-3A
.1980"
.1957"
#12-36 UNS-3B
.2160-36 UNS-3B
.1980"
.2010"
#12-40 UNS-1A
.2160-40 UNS-1A
.1989"
.1946"
#12-40 UNS-1B
.2160-40 UNS-1B
.1998"
.2054"
#12-40 UNS-2A
.2160-40 UNS-2A
.1989"
.1960"
#12-40 UNS-2B
.2160-40 UNS-2B
.1998"
.2035"
#12-40 UNS-3A
.2160-40 UNS-3A
.1998"
.1976"
#12-40 UNS-3B
.2160-40 UNS-3B
.1998"
.2026"
#12-48 UNS-1A
.2160-48 UNS-1A
.2017"
.1977"
#12-48 UNS-1B
.2160-48 UNS-1B
.2025"
.2077"
#12-48 UNS-2A
.2160-48 UNS-2A
.2017"
.1991"
#12-48 UNS-2B
.2160-48 UNS-2B
.2025"
.2059"
#12-48 UNS-3A
.2160-48 UNS-3A
.2025"
.2005"
#12-48 UNS-3B
.2160-48 UNS-3B
.2025"
.2051"
#12-56 UNS-1A
.2160-56 UNS-1A
.2036"
.1998"
#12-56 UNS-1B
.2160-56 UNS-1B
.2044"
.2093"
#12-56 UNS-2A
.2160-56 UNS-2A
.2036"
.2011"
#12-56 UNS-2B
.2160-56 UNS-2B
.2044"
.2076"
#12-56 UNS-3A
.2160-56 UNS-3A
.2044"
.2025"
#12-56 UNS-3B
.2160-56 UNS-3B
.2044"
.2069"
1/4-20 UNC-1A
.2500-20 UNC-1A
.2164"
.2108"
1/4-20 UNC-1B
.2500-20 UNC-1B
.2175"
.2248"
1/4-20 UNC-2A
.2500-20 UNC-2A
.2164"
.2127"
1/4-20 UNC-2B
.2500-20 UNC-2B
.2175"
.2224"
1/4-20 UNC-3A
.2500-20 UNC-3A
.2175"
.2147"
1/4-20 UNC-3B
.2500-20 UNC-3B
.2175"
.2211"
1/4-24 UNS-1A
.2500-24 UNS-1A
.2218"
.2163"
1/4-24 UNS-1B
.2500-24 UNS-1B
.2229"
.2301"
1/4-24 UNS-2A
.2500-24 UNS-2A
.2218"
.2181"
1/4-24 UNS-2B
.2500-24 UNS-2B
.2229"
.2227"
1/4-24 UNS-3A
.2500-24 UNS-3A
.2229"
.2201"
1/4-24 UNS-3B
.2500-24 UNS-3B
.2229"
.2265"
1/4-27 UNS-1A
.2500-27 UNS-1A
.2249"
.2197"
1/4-27 UNS-1B
.2500-27 UNS-1B
.2259"
.2327"
1/4-27 UNS-2A
.2500-27 UNS-2A
.2249"
.2214"
1/4-27 UNS-2B
.2500-27 UNS-2B
.2259"
.2304"
1/4-27 UNS-3A
.2500-27 UNS-3A
.2259"
.2233"
1/4-27 UNS-3B
.2500-27 UNS-3B
.2259"
.2293"
1/4-28 UNF-1A
.2500-28 UNF-1A
.2258"
.2208"
1/4-28 UNF-1B
.2500-28 UNF-1B
.2268"
.2333"
1/4-28 UNF-2A
.2500-28 UNF-2A
.2258"
.2225"
1/4-28 UNF-2B
.2500-28 UNF-2B
.2268"
.2311"
1/4-28 UNF-3A
.2500-28 UNF-3A
.2268"
.2243"
1/4-28 UNF-3B
.2500-28 UNF-3B
.2268"
.2300"
1/4-32 UNEF-1A
.2500-32 UNEF-1A
.2287"
.2239"
1/4-32 UNEF-1B
.2500-32 UNEF-1B
.2297"
.2260"
1/4-32 UNEF-2A
.2500-32 UNEF-2A
.2287"
.2255"
1/4-32 UNEF-2B
.2500-32 UNEF-2B
.2297"
.2339"
1/4-32 UNEF-3A
.2500-32 UNEF-3A
.2297"
.2273"
1/4-32 UNEF-3B
.2500-32 UNEF-3B
.2297"
.2328"
1/4-36 UNS-1A
.2500-36 UNS-1A
.2311"
.2265"
1/4-36 UNS-1B
.2500-36 UNS-1B
.2320"
.2380"
1/4-36 UNS-2A
.2500-36 UNS-2A
.2311"
.2280"
1/4-36 UNS-2B
.2500-36 UNS-2B
.2320"
.2360"
1/4-36 UNS-3A
.2500-36 UNS-3A
.2320"
.2297"
1/4-36 UNS-3B
.2500-36 UNS-3B
.2320"
.2350"
1/4-40 UNS-1A
.2500-40 UNS-1A
.2329"
.2285"
1/4-40 UNS-1B
.2500-40 UNS-1B
.2338"
.2395"
1/4-40 UNS-2A
.2500-40 UNS-2A
.2329"
.2300"
1/4-40 UNS-2B
.2500-40 UNS-2B
.2338"
.2376"
1/4-40 UNS-3A
.2500-40 UNS-3A
.2338"
.2316"
1/4-40 UNS-3B
.2500-40 UNS-3B
.2338"
.2367"
1/4-48 UNS-1A
.2500-48 UNS-1A
.2357"
.2316"
1/4-48 UNS-1B
.2500-48 UNS-1B
.2365"
.2418"
1/4-48 UNS-2A
.2500-48 UNS-2A
.2357"
.2330"
1/4-48 UNS-2B
.2500-48 UNS-2B
.2365"
.2401"
1/4-48 UNS-3A
.2500-48 UNS-3A
.2365"
.2345"
1/4-48 UNS-3B
.2500-48 UNS-3B
.2365"
.2392"
1/4-56 UNS-1A
.2500-56 UNS-1A
.2376"
.2337"
1/4-56 UNS-1B
.2500-56 UNS-1B
.2384"
.2434"
1/4-56 UNS-2A
.2500-56 UNS-2A
.2376"
.2350"
1/4-56 UNS-2B
.2500-56 UNS-2B
.2384"
.2417"
1/4-56 UNS-3A
.2500-56 UNS-3A
.2384"
.2365"
1/4-56 UNS-3B
.2500-56 UNS-3B
.2384"
.2409"
5/16-18 UNC-1A
.3125-18 UNC-1A
.2752"
.2691"
5/16-18 UNC-1B
.3125-18 UNC-1B
.2764"
.2843"
5/16-18 UNC-2A
.3125-18 UNC-2A
.2752"
.2712"
5/16-18 UNC-2B
.3125-18 UNC-2B
.2764"
.2817"
5/16-18 UNC-3A
.3125-18 UNC-3A
.2764"
.2734"
5/16-18 UNC-3B
.3125-18 UNC-3B
.2764"
.2803"
5/16-20 UN-1A
.3125-20 UN-1A
.2788"
.2727"
5/16-20 UN-1B
.3125-20 UN-1B
.2800"
.2879"
5/16-20 UN-2A
.3125-20 UN-2A
.2788"
.2748"
5/16-20 UN-2B
.3125-20 UN-2B
.2800"
.2852"
5/16-20 UN-3A
.3125-20 UN-3A
.2800"
.2770"
5/16-20 UN-3B
.3125-20 UN-3B
.2800"
.2839"
5/16-24 UNF-1A
.3125-24 UNF-1A
.2843"
.2788"
5/16-24 UNF-1B
.3125-24 UNF-1B
.2854"
.2925"
5/16-24 UNF-2A
.3125-24 UNF-2A
.2843"
.2806"
5/16-24 UNF-2B
.3125-24 UNF-2B
.2854"
.2902"
5/16-24 UNF-3A
.3125-24 UNF-3A
.2854"
.2827"
5/16-24 UNF-3B
.3125-24 UNF-3B
.2854"
.2890"
5/16-27 UNS-1A
.3125-27 UNS-1A
.2873"
.2820"
5/16-27 UNS-1B
.3125-27 UNS-1B
.2884"
.2953"
5/16-27 UNS-2A
.3125-27 UNS-2A
.2873"
.2837"
5/16-27 UNS-2B
.3125-27 UNS-2B
.2884"
.2930"
5/16-27 UNS-3A
.3125-27 UNS-3A
.2884"
.2857"
5/16-27 UNS-3B
.3125-27 UNS-3B
.2884"
.2919"
5/16-28 UN-1A
.3125-28 UN-1A
.2883"
.2831"
5/16-28 UN-1B
.3125-28 UN-1B
.2893"
.2961"
5/16-28 UN-2A
.3125-28 UN-2A
.2883"
.2849"
5/16-28 UN-2B
.3125-28 UN-2B
.2893"
.2937"
5/16-28 UN-3A
.3125-28 UN-3A
.2893"
.2867"
5/16-28 UN-3B
.3125-28 UN-3B
.2893"
.2926"
5/16-32 UNEF-1A
.3125-32 UNEF-1A
.2912"
.2862"
5/16-32 UNEF-1B
.3125-32 UNEF-1B
.2922"
.2986"
5/16-32 UNEF-2A
.3125-32 UNEF-2A
.2912"
.2880"
5/16-32 UNEF-2B
.3125-32 UNEF-2B
.2922"
.2964"
5/16-32 UNEF-3A
.3125-32 UNEF-3A
.2922"
.2898"
5/16-32 UNEF-3B
.3125-32 UNEF-3B
.2922"
.2953"
5/16-36 UNS-1A
.3125-36 UNS-1A
.2936"
.2889"
5/16-36 UNS-1B
.3125-36 UNS-1B
.2945"
.3006"
5/16-36 UNS-2A
.3125-36 UNS-2A
.2936"
.2905"
5/16-36 UNS-2B
.3125-36 UNS-2B
.2945"
.2985"
5/16-36 UNS-3A
.3125-36 UNS-3A
.2945"
.2921"
5/16-36 UNS-3B
.3125-36 UNS-3B
.2945"
.2976"
5/16-40 UNS-1A
.3125-40 UNS-1A
.2954"
.2909"
5/16-40 UNS-1B
.3125-40 UNS-1B
.2963"
.3022"
5/16-40 UNS-2A
.3125-40 UNS-2A
.2954"
.2925"
5/16-40 UNS-2B
.3125-40 UNS-2B
.2963"
.3001"
5/16-40 UNS-3A
.3125-40 UNS-3A
.2963"
.2940"
5/16-40 UNS-3B
.3125-40 UNS-3B
.2963"
.2992"
5/16-48 UNS-1A
.3125-48 UNS-1A
.2982"
.2940"
5/16-48 UNS-1B
.3125-48 UNS-1B
.2990"
.3045"
5/16-48 UNS-2A
.3125-48 UNS-2A
.2982"
.2955"
5/16-48 UNS-2B
.3125-48 UNS-2B
.2990"
.3026"
5/16-48 UNS-3A
.3125-48 UNS-3A
.2990"
.2969"
5/16-48 UNS-3B
.3125-48 UNS-3B
.2990"
.3017"
3/8-16 UNC-1A
.3750-16 UNC-1A
.3331"
.3266"
3/8-16 UNC-1B
.3750-16 UNC-1B
.3344"
.3429"
3/8-16 UNC-2A
.3750-16 UNC-2A
.3331"
.3287"
3/8-16 UNC-2B
.3750-16 UNC-2B
.3344"
.3401"
3/8-16 UNC-3A
.3750-16 UNC-3A
.3344"
.3311"
3/8-16 UNC-3B
.3750-16 UNC-3B
.3344"
.3387"
3/8-18 UNS-1A
.3750-18 UNS-1A
.3376"
.3311"
3/8-18 UNS-1B
.3750-18 UNS-1B
.3389"
.3473"
3/8-18 UNS-2A
.3750-18 UNS-2A
.3376"
.3333"
3/8-18 UNS-2B
.3750-18 UNS-2B
.3389"
.3445"
3/8-18 UNS-3A
.3750-18 UNS-3A
.3389"
.3357"
3/8-18 UNS-3B
.3750-18 UNS-3B
.3389"
.3431"
3/8-20 UN-1A
.3750-20 UN-1A
.3413"
.3351"
3/8-20 UN-1B
.3750-20 UN-1B
.3425"
.3505"
3/8-20 UN-2A
.3750-20 UN-2A
.3413"
.3372"
3/8-20 UN-2B
.3750-20 UN-2B
.3425"
.3479"
3/8-20 UN-3A
.3750-20 UN-3A
.3425"
.3394"
3/8-20 UN-3B
.3750-20 UN-3B
.3425"
.3465"
3/8-24 UNF-1A
.3750-24 UNF-1A
.3468"
.3411"
3/8-24 UNF-1B
.3750-24 UNF-1B
.3479"
.3553"
3/8-24 UNF-2A
.3750-24 UNF-2A
.3468"
.3430"
3/8-24 UNF-2B
.3750-24 UNF-2B
.3479"
.3528"
3/8-24 UNF-3A
.3750-24 UNF-3A
.3479"
.3450"
3/8-24 UNF-3B
.3750-24 UNF-3B
.3479"
.3516"
3/8-27 UNS-1A
.3750-27 UNS-1A
.3498"
.3444"
3/8-27 UNS-1B
.3750-27 UNS-1B
.3509"
.3579"
3/8-27 UNS-2A
.3750-27 UNS-2A
.3498"
.3462"
3/8-27 UNS-2B
.3750-27 UNS-2B
.3509"
.3556"
3/8-27 UNS-3A
.3750-27 UNS-3A
.3509"
.3482"
3/8-27 UNS-3B
.3750-27 UNS-3B
.3509"
.3544"
3/8-28 UN-1A
.3750-28 UN-1A
.3507"
.3454"
3/8-28 UN-1B
.3750-28 UN-1B
.3518"
.3587"
3/8-28 UN-2A
.3750-28 UN-2A
.3507"
.3471"
3/8-28 UN-2B
.3750-28 UN-2B
.3518"
.3564"
3/8-28 UN-3A
.3750-28 UN-3A
.3518"
.3491"
3/8-28 UN-3B
.3750-28 UN-3B
.3518"
.3553"
3/8-32 UNEF-1A
.3750-32 UNEF-1A
.3537"
.3587"
3/8-32 UNEF-1B
.3750-32 UNEF-1B
.3547"
.3613"
3/8-32 UNEF-2A
.3750-32 UNEF-2A
.3537"
.3503"
3/8-32 UNEF-2B
.3750-32 UNEF-2B
.3547"
.3591"
3/8-32 UNEF-3A
.3750-32 UNEF-3A
.3547"
.3522"
3/8-32 UNEF-3B
.3750-32 UNEF-3B
.3547"
.3580"
3/8-36 UNS-1A
.3750-36 UNS-1A
.3560"
.3512"
3/8-36 UNS-1B
.3750-36 UNS-1B
.3570"
.3633"
3/8-36 UNS-2A
.3750-36 UNS-2A
.3560"
.3528"
3/8-36 UNS-2B
.3750-36 UNS-2B
.3570"
.3612"
3/8-36 UNS-3A
.3750-36 UNS-3A
.3570"
.3546"
3/8-36 UNS-3B
.3750-36 UNS-3B
.3570"
.3601"
3/8-40 UNS-1A
.3750-40 UNS-1A
.3579"
.3533"
3/8-40 UNS-1B
.3750-40 UNS-1B
.3588"
.3648"
3/8-40 UNS-2A
.3750-40 UNS-2A
.3579"
.3548"
3/8-40 UNS-2B
.3750-40 UNS-2B
.3588"
.3628"
3/8-40 UNS-3A
.3750-40 UNS-3A
.3588"
.3565"
3/8-40 UNS-3B
.3750-40 UNS-3B
.3588"
.3618"
7/16-14 UNC-1A
.4375-14 UNC-1A
.3897"
.3826"
7/16-14 UNC-1B
.4375-14 UNC-1B
.3911"
.4003"
7/16-14 UNC-2A
.4375-14 UNC-2A
.3897"
.3850"
7/16-14 UNC-2B
.4375-14 UNC-2B
.3911"
.3972"
7/16-14 UNC-3A
.4375-14 UNC-3A
.3911"
.3876"
7/16-14 UNC-3B
.4375-14 UNC-3B
.3911"
.3957"
7/16-16 UN-1A
.4375-16 UN-1A
.3955"
.3886"
7/16-16 UN-1B
.4375-16 UN-1B
.3969"
.4059"
7/16-16 UN-2A
.4375-16 UN-2A
.3955"
.3909"
7/16-16 UN-2B
.4375-16 UN-2B
.3969"
.4028"
7/16-16 UN-3A
.4375-16 UN-3A
.3969"
.3935"
7/16-16 UN-3B
.4375-16 UN-3B
.3969"
.4014"
7/16-18 UNS-1A
.4375-18 UNS-1A
.4001"
.3935"
7/16-18 UNS-1B
.4375-18 UNS-1B
.4014"
.4099"
7/16-18 UNS-2A
.4375-18 UNS-2A
.4001"
.3958"
7/16-18 UNS-2B
.4375-18 UNS-2B
.4014"
.4070"
7/16-18 UNS-3A
.4375-18 UNS-3A
.4014"
.3981"
7/16-18 UNS-3B
.4375-18 UNS-3B
.4014"
.4057"
7/16-20 UNF-1A
.4375-20 UNF-1A
.4037"
.3975"
7/16-20 UNF-1B
.4375-20 UNF-1B
.4050"
.4131"
7/16-20 UNF-2A
.4375-20 UNF-2A
.4037"
.3995"
7/16-20 UNF-2B
.4375-20 UNF-2B
.4050"
.4104"
7/16-20 UNF-3A
.4375-20 UNF-3A
.4050"
.4019"
7/16-20 UNF-3B
.4375-20 UNF-3B
.4050"
.4091"
7/16-24 UNS-1A
.4375-24 UNS-1A
.4092"
.4034"
7/16-24 UNS-1B
.4375-24 UNS-1B
.4104"
.4179"
7/16-24 UNS-2A
.4375-24 UNS-2A
.4092"
.4053"
7/16-24 UNS-2B
.4375-24 UNS-2B
.4104"
.4154"
7/16-24 UNS-3A
.4375-24 UNS-3A
.4104"
.4075"
7/16-24 UNS-3B
.4375-24 UNS-3B
.4104"
.4142"
7/16-27 UNS-1A
.4375-27 UNS-1A
.4123"
.4068"
7/16-27 UNS-1B
.4375-27 UNS-1B
.4134"
.4206"
7/16-27 UNS-2A
.4375-27 UNS-2A
.4123"
.4087"
7/16-27 UNS-2B
.4375-27 UNS-2B
.4134"
.4181"
7/16-27 UNS-3A
.4375-27 UNS-3A
.4134"
.4106"
7/16-27 UNS-3B
.4375-27 UNS-3B
.4134"
.4170"
7/16-28 UNEF-1A
.4375-28 UNEF-1A
.4132"
.4078"
7/16-28 UNEF-1B
.4375-28 UNEF-1B
.4143"
.4214"
7/16-28 UNEF-2A
.4375-28 UNEF-2A
.4132"
.4096"
7/16-28 UNEF-2B
.4375-28 UNEF-2B
.4143"
.4189"
7/16-28 UNEF-3A
.4375-28 UNEF-3A
.4143"
.4116"
7/16-28 UNEF-3B
.4375-28 UNEF-3B
.4143"
.4178"
7/16-32 UN-1A
.4375-32 UN-1A
.4162"
.4111"
7/16-32 UN-1B
.4375-32 UN-1B
.4172"
.4239"
7/16-32 UN-2A
.4375-32 UN-2A
.4162"
.4128"
7/16-32 UN-2B
.4375-32 UN-2B
.4172"
.4216"
7/16-32 UN-3A
.4375-32 UN-3A
.4172"
.4147"
7/16-32 UN-3B
.4375-32 UN-3B
.4172"
.4205"
1/2-12 UNS-1A
.5000-12 UNS-1A
.4443"
.4363"
1/2-12 UNS-1B
.5000-12 UNS-1B
.4459"
.4563"
1/2-12 UNS-2A
.5000-12 UNS-2A
.4443"
.4389"
1/2-12 UNS-2B
.5000-12 UNS-2B
.4459"
.4529"
1/2-12 UNS-3A
.5000-12 UNS-3A
.4459"
.4419"
1/2-12 UNS-3B
.5000-12 UNS-3B
.4459"
.4511"
1/2-13 UNC-1A
.5000-13 UNC-1A
.4485"
.4411"
1/2-13 UNC-1B
.5000-13 UNC-1B
.4500"
.4597"
1/2-13 UNC-2A
.5000-13 UNC-2A
.4485"
.4435"
1/2-13 UNC-2B
.5000-13 UNC-2B
.4500"
.4565"
1/2-13 UNC-3A
.5000-13 UNC-3A
.4500"
.4463"
1/2-13 UNC-3B
.5000-13 UNC-3B
.4500"
.4548"
1/2-14 UNS-1A
.5000-14 UNS-1A
.4521"
.4446"
1/2-14 UNS-1B
.5000-14 UNS-1B
.4536"
.4633"
1/2-14 UNS-2A
.5000-14 UNS-2A
.4521"
.4471"
1/2-14 UNS-2B
.5000-14 UNS-2B
.4536"
.4601"
1/2-14 UNS-3A
.5000-14 UNS-3A
.4536"
.4499"
1/2-14 UNS-3B
.5000-14 UNS-3B
.4536"
.4585"
1/2-16 UN-1A
.5000-16 UN-1A
.4580"
.4510"
1/2-16 UN-1B
.5000-16 UN-1B
.4594"
.4685"
1/2-16 UN-2A
.5000-16 UN-2A
.4580"
.4533"
1/2-16 UN-2B
.5000-16 UN-2B
.4594"
.4655"
1/2-16 UN-3A
.5000-16 UN-3A
.4594"
.4559"
1/2-16 UN-3B
.5000-16 UN-3B
.4594"
.4640"
1/2-18 UNS-1A
.5000-18 UNS-1A
.4626"
.4559"
1/2-18 UNS-1B
.5000-18 UNS-1B
.4639"
.4726"
1/2-18 UNS-2A
.5000-18 UNS-2A
.4626"
.4582"
1/2-18 UNS-2B
.5000-18 UNS-2B
.4639"
.4697"
1/2-18 UNS-3A
.5000-18 UNS-3A
.4639"
.4606"
1/2-18 UNS-3B
.5000-18 UNS-3B
.4639"
.4682"
1/2-20 UNF-1A
.5000-20 UNF-1A
.4662"
.4392"
1/2-20 UNF-1B
.5000-20 UNF-1B
.4675"
.4759"
1/2-20 UNF-2A
.5000-20 UNF-2A
.4662"
.4619"
1/2-20 UNF-2B
.5000-20 UNF-2B
.4675"
.4731"
1/2-20 UNF-3A
.5000-20 UNF-3A
.4675"
.4643"
1/2-20 UNF-3B
.5000-20 UNF-3B
.4675"
.4717"
1/2-24 UNS-1A
.5000-24 UNS-1A
.4717"
.4658"
1/2-24 UNS-1B
.5000-24 UNS-1B
.4729"
.4805"
1/2-24 UNS-2A
.5000-24 UNS-2A
.4717"
.4678"
1/2-24 UNS-2B
.5000-24 UNS-2B
.4729"
.4780"
1/2-24 UNS-3A
.5000-24 UNS-3A
.4729"
.4700"
1/2-24 UNS-3B
.5000-24 UNS-3B
.4729"
.4767"
1/2-27 UNS-1A
.5000-27 UNS-1A
.4748"
.4692"
1/2-27 UNS-1B
.5000-27 UNS-1B
.4759"
.4832"
1/2-27 UNS-2A
.5000-27 UNS-2A
.4748"
.4711"
1/2-27 UNS-2B
.5000-27 UNS-2B
.4759"
.4807"
1/2-27 UNS-3A
.5000-27 UNS-3A
.4759"
.4731"
1/2-27 UNS-3B
.5000-27 UNS-3B
.4759"
.4795"
1/2-28 UNEF-1A
.5000-28 UNEF-1A
.4757"
.4702"
1/2-28 UNEF-1B
.5000-28 UNEF-1B
.4768"
.4840"
1/2-28 UNEF-2A
.5000-28 UNEF-2A
.4757"
.4720"
1/2-28 UNEF-2B
.5000-28 UNEF-2B
.4768"
.4816"
1/2-28 UNEF-3A
.5000-28 UNEF-3A
.4768"
.4740"
1/2-28 UNEF-3B
.5000-28 UNEF-3B
.4768"
.4804"
1/2-32 UN-1A
.5000-32 UN-1A
.4787"
.4735"
1/2-32 UN-1B
.5000-32 UN-1B
.4797"
.4865"
1/2-32 UN-2A
.5000-32 UN-2A
.4787"
.4752"
1/2-32 UN-2B
.5000-32 UN-2B
.4797"
.4842"
1/2-32 UN-3A
.5000-32 UN-3A
.4797"
.4771"
1/2-32 UN-3B
.5000-32 UN-3B
.4797"
.4831"
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