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Close Tolerance Bolt NSN 5306-00-993-1543

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 5306-00-993-1543 NSN: 5306-00-993-1543

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.316 inches
Fastener Length
0.378 inches
Head Style
Hexagon
Head Height
0.125 inches
Width Between Flats
0.438 inches
Hole Diameter
0.046 inches
Grip Diameter
Between 0.2485 inches and 0.2495 inches
Thread Diameter
0.250 inches
Grip Length
0.062 inches
Hole Quantity
3
Hole Type
Drilled
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
180000 pounds per square inch
Hardness Rating
36.0 rockwell c and 40.0 rockwell c
Hole Configuration Style
Hexagon longitudinal hole
Surface Finish
63.0 microinches head
Material
Steel comp e4340 or steel comp 4340 or steel comp 4140 or steel comp 8740 or steel comp 6150
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, class 3 federal specification single treatment response
Thread Series Designator
Unf
Specification Data
76823-51b464 manufacturers standard
FSC
5306 Bolts
NIIN
009931543
NSN
5306009931543

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
51B464-4A1H
Cage Code:
0JRC1
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 5306-00-993-1543
What are the manufacturers of nsn 5306009931543?
Does this nsn 5306009931543 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5306009931543
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 5306009931543 contain any precious metals?
Precious metal content is unknown.
Does nsn 5306009931543 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5306009931543?
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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