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Close Tolerance Screw NSN 5305-00-580-4779

Item Description

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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 designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

NSN 5305-00-580-4779 NSN: 5305-00-580-4779

  Stock Availability

NSN 5305005804779 availability
(as of 10/20/2021).

  • NS: 227
  • NE: 391

Note: Availability of this item may have changed since it was last checked. Request a quote for an updated price and availability quote.

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.290 inches and 0.357 inches
Fastener Length
Between 0.550 inches and 0.597 inches
Head Style
Flat countersunk
Head Diameter
Between 0.390 inches and 0.395 inches
Grip Diameter
Between 0.2485 inches and 0.2495 inches
Internal Drive Style
High-torque
Thread Diameter
0.250 inches
Grip Length
Between 0.240 inches and 0.260 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
180000 pounds per square inch
Hardness Rating
40.0 rockwell c and 43.0 rockwell c
Countersink Angle
100.0 degrees
Surface Finish
32.0 microinches grip
Material
Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740
Material Specification
Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification all treatment responses
Thread Series Designator
Unf
FSC
5305 Screws
NIIN
005804779
NSN
5305005804779

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
HT184-4-4
Cage Code:
73197
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 5305-00-580-4779
What are the manufacturers of nsn 5305005804779?
Does this nsn 5305005804779 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305005804779
A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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 designed to be held or driven with an inserted driver. it is not designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads.
Does nsn 5305005804779 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305005804779 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305005804779?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
29294
FIIG:
A003B0
App. Key:
SS
Cond. Code:
1
Status:
A

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