What size is 3/8 UNF?

What size is 3/8 UNF?

UNF Thread ANSI/ASME B1. 1

Nominal Diameter Major Diameter Inch Tapping Drill Size mm
3/8″ – 24 UNF 0.375 8.50
7/16″ – 20 UNF 0.438 9.90
1/2″ – 20 UNF 0.500 11.50
9/16″ – 18 UNF 0.563 12.90

What is UNF thread size?

The Unified Thread Series is classified into coarse threads, fine threads and extra fine threads much like Metric screw threads are. UNC: Is the symbol for Unified coarse pitch threads. UNF: Is the symbol for Unified fine pitch threads. UNEF: Is the symbol for United extra fine pitch threads.

What does UNF mean on a tap?

NF and UNF mean fine thread. NS means special thread. Pitch Diameter is the basic dimension of a screw, threaded hole, or a tap the diameter of an imaginary cylinder, the surface of which passes through the thread where width of thread and space between threads are identical.

Is UNF the same as metric?

A 1/4 UNF thread is about 14% stronger than its UNC counterpart. The metric coarse thread is actually between UN coarse and fine thread, and the metric fine thread is finer than the UNF threads.

What does UNF stand for in bolts?

Unified National Fine Thread
UNC – Unified National Coarse Thread, comparable with the ISO metric thread. UNF – Unified National Fine Thread.

What does UNF stand for?


Acronym Definition
UNF University of North Florida
UNF Unfinished
UNF United Nations Foundation
UNF Unified National Fine Thread (tools)

What is UNF thread?

Unified National Fine Screw Thread
UNF = Unified National Fine Screw Thread. This is one of three graded series: UNC (Unified National Corase); UNF (Unified National Fine); and UNEF (Unified National Extra Fine). The Nominal Major Diameter and Threads-per-inch (Pitch) are defined by ANSI/ASME B1.

How do you identify UNF threads?

The easiest to look at first is to determine if it is BSW , UNC or UNF. This is mainly because you can count the threads per inch quite easily by placing a rule or venire next to the bolt. If the bolt is not long enough, count the threads per half inch and then double your result.

Whats UNF mean?

Interjection. unf. (Internet slang, text messaging) Inarticulate grunt of desire issued upon sighting someone sexually attractive, or made in response to a spasm of pleasure during sexual intercourse.

Is UNF same as BSF?

BSF and BSW are Britisch measurement systems, while UNF and UNC are American measurement systems. BSF and UNF are the fine thread systems, while BSW and UNC are the coarse thread systems. The BSF/BSW have a wave like thread profile.

What is UNF mean?

What’s the difference between UNC and UNF?

UNF and UNC are two symbols of Unified Screw Thread Series, which defined based on the amount of threads per inch and standardized with gauge. UNF threads are Unified fine pitch threads, while UNC threads are Unified coarse pitch threads. coarse thread has higher strength and find thread is better for sealing.