5/16-18UNC-1A

51618UNC1A Plain Hexagon Nut

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Datasheet. 5/16-18UNC-1A specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

1a

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

18

Answers.

What is the thread quantity per inch?

18

What is the thread class?

1a

What is the NSN for 5/16-18UNC-1A?

5310-01-363-5639

What's the federal classification of 5/16-18UNC-1A?

FSC 5310 ⁓ Nuts and washers

Note-nuts and washers, including specially designed, are to be classified in this fsc. a. nuts are a small metal block made in a variety of shapes such as square and hexagonal which is drilled and internally threaded. b. washers are a perforated piece of metal, leather, or other materials of various shapes or forms. they are used primarily as a seat for a bolt, nut, screw, rivet or nail to distribute pressure and prevent endwise motion over an area and/or to prevent movement between two parts by means of restraining features created by the shape of its edges.

Excluding bearing thrust washers (fsc 3120); shims (fsc 5365); ring spacers (fsc 5365); plate spacers (fsc 5365); lock rings (fsc 5365).

NSN 5310-01-363-5639 NUT,PLAIN,HEXAGON

18 thread quantity per inch 1a thread class

NIIN
013635639
NIIN Date
09/01/92
Schedule B
 
Name Code
01857
FIIG
A021A0
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - France 
  • - Germany 

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Similar by Design Other nuts with similar characteristics

Nothing similar to this part number was found in our inventory

5/16-18UNC-1A / Nut,plain,hexagonWhat is the formal definition of this item?

A nut, flat on top and bottom having 6 flat sides. for items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. see also locknut, tube fitting. for items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)