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Externally Relieved Body Bolt NSN 5306-01-139-4721

Item Description

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

NSN 5306-01-139-4721 NSN: 5306-01-139-4721

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.312 inches
Fastener Length
Between 0.870 inches and 0.890 inches
Head Style
Double hexagon w/hole
Head Height
Between 0.240 inches and 0.260 inches
Width Between Flats
0.312 inches
Extended Washer Diameter
Between 0.380 inches and 0.400 inches
Extended Washer Thickness
0.060 inches
First Diameter From Head
Between 0.195 inches and 0.200 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.558 inches and 0.578 inches
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Externally Relieved Body Diameter Quantity
1
Material
Steel
Material Specification
Ams 5731 assn standard single material response
Precious Material And Location
Threads silver
Surface Treatment
Silver threads
Surface Treatment Specification
Ams 2411 assn standard single treatment response threads
Thread Series Designator
Unjf
FSC
5306 Bolts
NIIN
011394721
NSN
5306011394721

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
3031T95P04
Cage Code:
99207
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7318152000
  • NAICS: 332722
  • SITC: 69421
  • Description: Bolts and bolts and their nuts or washers exported in the same shipment
  • End Use (Code 12110):
    Iron and steel products, other

Q & A

Frequently asked questions for NSN 5306-01-139-4721
What are the manufacturers of nsn 5306011394721?
Does this nsn 5306011394721 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5306011394721
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). it is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. excludes bolt, internal wrenching and thumbscrew. see also screw, externally relieved body.
Does nsn 5306011394721 contain any precious metals?
Item contains silver.
Does nsn 5306011394721 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5306011394721?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
06675
FIIG:
A003B0
App. Key:
BF
Cond. Code:
1
Status:
A

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