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Close Tolerance Screw NSN 5305-00-450-5975

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 5305-00-450-5975 NSN: 5305-00-450-5975

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.352 inches and 0.402 inches
Fastener Length
Between 1.362 inches and 1.392 inches
Head Style
Flat countersunk
Head Diameter
Between 0.412 inches and 0.439 inches
Grip Diameter
Between 0.2490 inches and 0.2495 inches
Internal Drive Style
Offset cruciform (torque set)
Thread Diameter
0.250 inches
Grip Length
Between 0.990 inches and 1.010 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
160000 pounds per square inch
Countersink Angle
60.0 degrees
Surface Finish
32.0 microinches threads
Special Features
Bearing surface of head to be grooved to 0.323 in. Min 0.325 in. Max dia, 0.050 in. Min 0.055 in. Max from top of head
Material
Titanium alloy uns r54520
Material Specification
Nas 621, 6al-4v assn standard single material response
Thread Series Designator
Unjf
FSC
5305 Screws
NIIN
004505975
NSN
5305004505975

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
VT1039V4-16
Cage Code:
92215
Status:
A
MSDS:
Part Number:
CS318642V4-16
Cage Code:
93907
Status:
A
MSDS:
Part Number:
AIC1023V4-16
Cage Code:
06725
Status:
A
MSDS:
Part Number:
C387V4-16
Cage Code:
06950
Status:
A
MSDS:
Part Number:
HR101V-4-16
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: 8109900000
  • NAICS: 331491
  • SITC: 69987
  • Description: Zirconium and articles thereof nesoi
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5305-00-450-5975
What are the manufacturers of nsn 5305004505975?
Does this nsn 5305004505975 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305004505975
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 5305004505975 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305004505975 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305004505975?
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
  •   Quality Fast Service
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