ExternalMajor DiameterMaximum .000 4.826 4.675 4.310 4.253 Minimum

10-32 UNF-3AMinor DiameterMaximum 3.967 Minimum --

Allowance

Pitch Diameter/Functional SizeMaximum Minimum Tolerance .057

Root RadiusMaximum -Minimum --

External dimensions are based on a normal length of engagement, which is 5.98 - 8.33

InternalMinor DiameterMinimum 3.967 Maximum 4.167

10-32 UNF-3BMajor DiameterMinimum 4.826

Wires and Constants

Pitch Diameter/Functional SizeMinimum 4.310 Maximum 4.384 Tolerance .074

Wire DiametersMaximum .8019 Best .4575 Minimum .4011

ConstantsBest .6865 Alternate .6789

Internal dimensions are based on a normal length of engagement, which is 5.98 - 8.33 Alternate .4549

Lead Angle Effect Considered

Measurement Over Wires - MOWMaximum 4.989 Minimum 4.932

Summary InformationUnified Fine Pitch Series thread profile included angle = 60 coating buildup of .025 changes the measurement over wires by .102 Reference ASME B1.1-2003

Pitch and LeadStarts = 1 Pitch = .794 Lead = .794 Lead Angle = 3.355

Derivation of DataAll thread dimensions are computed using formulas from the latest revisions of standards as they may apply, including ASME B1.1, B1.13M, B1.20.1, B1.21M, B1.3M, B1.5, B1.9, SAE AS8879, ISO 7-1, ISO 965, ISO 5855, ISO 2901, B.S. 84, and DIN 513. These values are derived and applied using the standard rules in B1.30 for rounding. All dimensions are to be used for guidance purposes only.

JG ThreadSpecs 2.0The Johnson Gage Company 534 Cottage Grove Road Bloomfield, CT 06032 (860) 242-5541 / (860) 242-0513 www.johnsongage.com

Metric Values Displayed