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Close Tolerance Bolt NSN 5306-01-383-0521

Item Description

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

NSN 5306-01-383-0521 NSN: 5306-01-383-0521

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.532 inches
Fastener Length
1.344 inches
Head Style
Double hexagon w/hole
Head Height
0.250 inches
Width Between Flats
0.250 inches
Extended Washer Diameter
0.375 inches
Extended Washer Thickness
Between 0.040 inches and 0.050 inches
Grip Diameter
Between 0.1894 inches and 0.1899 inches
Thread Diameter
0.190 inches
Grip Length
0.812 inches
Thready Qty Per Inch (tpi)
32
Criticality Code Justification
Thsd
Surface Finish
32.0 microinches threads
Special Features
3thread is safety critical per mil-s-8879 under application category safety critical. Apply one coat of mil-p-23377, type 1, cl 1 or 3, and two top coats of mil-c-46168, color code 33538 per fed-std-595 to top of head. Grip is under cut for relief
Material
Iron alloy 660
Material Specification
Ams 5731 assn standard single material response
Thread Series Designator
Unjf
FSC
5306 Bolts
NIIN
013830521
NSN
5306013830521

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
02321-3
Cage Code:
14153
Status:
A
MSDS:
Part Number:
02321-03
Cage Code:
14153
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 5306-01-383-0521
What are the manufacturers of nsn 5306013830521?
Does this nsn 5306013830521 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5306013830521
An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. the head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. for items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. for items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.
Does nsn 5306013830521 contain any precious metals?
No precious metal content.
Does nsn 5306013830521 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5306013830521?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
27851
FIIG:
A003B0
App. Key:
BC
Cond. Code:
1
Status:
A

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