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Close Tolerance Screw NSN 5305-00-841-2291

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 5305-00-841-2291 NSN: 5305-00-841-2291

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.490 inches and 0.557 inches
Fastener Length
Between 2.188 inches and 2.235 inches
Head Style
Flat countersunk
Head Diameter
Between 0.752 inches and 0.762 inches
Grip Diameter
Between 0.3735 inches and 0.3745 inches
Internal Drive Style
High-torque
Thread Diameter
0.375 inches
Grip Length
Between 1.678 inches and 1.698 inches
Thready Qty Per Inch (tpi)
24
Min. Tensile Strength (psi)
220000 pounds per square inch
Hardness Rating
46.0 rockwell c and 50.0 rockwell c
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp h11
Material Specification
Ams 6487 assn standard single material response
Surface Treatment
Cadmium and chromate
Thread Series Designator
Unjf
FSC
5305 Screws
NIIN
008412291
NSN
5305008412291

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
HT195-6-27
Cage Code:
73197
Status:
A
MSDS:
Part Number:
HS2623-6Z27
Cage Code:
17446
Status:
A
MSDS:
Part Number:
3M263-6-27
Cage Code:
76301
Status:
A
MSDS:
Part Number:
66117H6-27
Cage Code:
50392
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 5305-00-841-2291
What are the manufacturers of nsn 5305008412291?
Does this nsn 5305008412291 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305008412291
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 5305008412291 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305008412291 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305008412291?
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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