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Close Tolerance Screw NSN 5305-00-809-1740

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 5305-00-809-1740 NSN: 5305-00-809-1740

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.316 inches
Fastener Length
Between 0.476 inches and 0.543 inches
Head Style
Flat countersunk
Head Diameter
0.507 inches
Grip Diameter
Between 0.2485 inches and 0.2495 inches
Internal Drive Style
Offset cruciform (torque set)
Thread Diameter
0.250 inches
Grip Length
Between 0.176 inches and 0.196 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
180000 pounds per square inch
Countersink Angle
100.0 degrees
Surface Finish
32.0 microinches grip
Material
Steel comp 4340 or steel comp 4140 or steel comp 8740 or steel comp 6150 or steel comp e4340
Surface Treatment
Cadmium or cadmium and chromate
Surface Treatment Specification
Qq-p-416 type 1 federal specification 1st treatment response or qq-p-416 type 2 federal specification 2nd treatment response
Thread Series Designator
Unf
FSC
5305 Screws
NIIN
008091740
NSN
5305008091740

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
51B334-3
Cage Code:
0JRC1
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 5305-00-809-1740
What are the manufacturers of nsn 5305008091740?
Does this nsn 5305008091740 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305008091740
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 5305008091740 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305008091740 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305008091740?
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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