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Close Tolerance Bolt NSN 5306-01-520-8956

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 5306-01-520-8956 NSN: 5306-01-520-8956

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.425 inches
Fastener Length
0.675 inches
Head Style
Flat countersunk
Head Diameter
Between 0.455 inches and 0.510 inches
Locking Feature
Pellet locking feature
Grip Diameter
Between 0.2481 inches and 0.2485 inches
Shank Unthreaded Hole Diameter
0.076 inches
Thread Diameter
0.250 inches
Grip Length
0.250 inches
Thready Qty Per Inch (tpi)
28
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Distance From Head Largest Bearing Surface To Shank Hole Center
2.6845 inches first hole
Material
Stainless steel
Material Specification
Ams5737 assn standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type ii, class 2 federal specification single treatment response
Thread Series Designator
Unjf
FSC
5306 Bolts
NIIN
015208956
NSN
5306015208956

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
BACB30LR4-4
Cage Code:
81205
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 5306-01-520-8956
What are the manufacturers of nsn 5306015208956?
Does this nsn 5306015208956 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5306015208956
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 5306015208956 contain any precious metals?
No precious metal content.
Does nsn 5306015208956 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5306015208956?
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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