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Close Tolerance Screw NSN 5305-00-531-3968

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 5305-00-531-3968 NSN: 5305-00-531-3968

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.504 inches and 0.571 inches
Fastener Length
Between 0.952 inches and 0.999 inches
Head Style
Flat countersunk
Head Diameter
Between 0.629 inches and 0.634 inches
Grip Diameter
Between 0.3115 inches and 0.3120 inches
Internal Drive Style
High-torque
Thread Diameter
0.312 inches
Grip Length
Between 0.428 inches and 0.448 inches
Thready Qty Per Inch (tpi)
24
Min. Tensile Strength (psi)
95000 pounds per square inch
Hardness Rating
24.0 rockwell c and 44.0 rockwell c
Countersink Angle
100.0 degrees
Surface Finish
32.0 microinches threads
Material
Iron alloy 660
Material Specification
Ams 5736 assn standard single material response
Thread Series Designator
Unf
FSC
5305 Screws
NIIN
005313968
NSN
5305005313968

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
HT123-5-7
Cage Code:
17446
Status:
A
MSDS:
Part Number:
HT1029A5-7
Cage Code:
06950
Status:
A
MSDS:
Part Number:
54291-5-7
Cage Code:
56878
Status:
A
MSDS:
Part Number:
HT5N7
Cage Code:
73197
Status:
A
MSDS:
Part Number:
3M123-5-7
Cage Code:
76301
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 5305-00-531-3968
What are the manufacturers of nsn 5305005313968?
Does this nsn 5305005313968 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305005313968
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 5305005313968 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305005313968 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305005313968?
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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