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Close Tolerance Screw NSN 5305-00-040-9879

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 5305-00-040-9879 NSN: 5305-00-040-9879

Features and Characteristics

Thread Class
3a
Thread Length
Between 0.380 inches and 0.447 inches
Fastener Length
Between 2.890 inches and 2.937 inches
Head Style
Flat countersunk
Head Diameter
Between 0.329 inches and 0.385 inches
Grip Diameter
Between 0.1885 inches and 0.1895 inches
Grip Length
Between 2.490 inches and 2.510 inches
Countersink Angle
100.0 degrees
Surface Finish
32.0 microinches
FSC
5305 Screws
NIIN
000409879
NSN
5305000409879

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
53B333-40
Cage Code:
0JRC1
Status:
A
MSDS:

Q & A

Frequently asked questions for NSN 5305-00-040-9879
What are the manufacturers of nsn 5305000409879?
Does this nsn 5305000409879 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305000409879
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 5305000409879 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305000409879 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305000409879?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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