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Hexagon Plain Nut NSN 5310-00-400-3971

Item Description

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.)

NSN 5310-00-400-3971 NSN: 5310-00-400-3971

Features and Characteristics

Thread Class
2b
Thread Direction
Right-hand
Nut Style
Hexagon
Nut Height
Between 0.140 inches and 0.155 inches
Drilled Hole Diameter
0.045 inches
Hole Type And Quantity
2 drilled
Width Across Flats
Between 0.610 inches and 0.630 inches
Thread Series
Uns
Thready Qty Per Inch (tpi)
40
Thread Size
0.250 inches
Hole Configuration Style
Configuration b
Countersink Angle
80.0 degrees nut and 100.0 degrees nut
Bearing Surface Type
Chamfered
Bearing Surface Finish
125.0 microinches
Material
Steel comp 1117
Material Specification
Qq-s-637 federal specification single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
FSC
5310 Nuts And Washers
NIIN
004003971
NSN
5310004003971

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
801209-1
Cage Code:
70210
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7318160000
  • NAICS: 332722
  • SITC: 69421
  • Description: Nuts of iron or steel
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-00-400-3971
What are the manufacturers of nsn 5310004003971?
Does this nsn 5310004003971 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310004003971
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.)
Does nsn 5310004003971 contain any precious metals?
No precious metal content.
Does nsn 5310004003971 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310004003971?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
01857
FIIG:
A021A0
App. Key:
AG
Cond. Code:
1
Status:
A

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  •   Certificate of Conformance
  •   Quality Inspected Parts
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