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Close Tolerance Screw NSN 5305-00-550-1573

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 5305-00-550-1573 NSN: 5305-00-550-1573

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.469 inches
Fastener Length
1.719 inches
Head Style
Flat countersunk
Head Diameter
Between 0.497 inches and 0.507 inches
Grip Diameter
Between 0.2490 inches and 0.2495 inches
Shank Unthreaded Hole Diameter
0.076 inches first hole and 0.081 inches first hole
Internal Drive Style
High-torque
Thread Diameter
0.250 inches
Grip Length
1.250 inches
Thready Qty Per Inch (tpi)
28
Countersink Angle
100.0 degrees
Distance From Head Largest Bearing Surface To Shank Hole Center
1.583 inches first hole and 1.623 inches first hole
Material
Stainless steel
Surface Treatment
Passivate
Thread Series Designator
Unjf
FSC
5305 Screws
NIIN
005501573
NSN
5305005501573

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
ST3M454-4LD20
Cage Code:
76301
Status:
A
MSDS:
Part Number:
HT4025L4D20
Cage Code:
C4293
Status:
A
MSDS:
Part Number:
11905-4LD20
Cage Code:
59563
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 5305-00-550-1573
What are the manufacturers of nsn 5305005501573?
Does this nsn 5305005501573 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305005501573
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 5305005501573 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305005501573 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305005501573?
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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