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Socket Head Cap Screw NSN 5305-00-840-4257

Item Description

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

NSN 5305-00-840-4257 NSN: 5305-00-840-4257

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.625 inches
Fastener Length
0.625 inches
Head Style
Button
Head Diameter
0.427 inches
Head Height
0.105 inches
Internal Drive Style
Hexagon
Thread Diameter
0.250 inches
Width Across Flats
0.125 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
145000 pounds per square inch
Hardness Rating
36.0 rockwell c and 42.0 rockwell c
Material
Steel
Surface Treatment
Cadmium and chromate or zinc and chromate
Thread Series Designator
Unf
FSC
5305 Screws
NIIN
008404257
NSN
5305008404257

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
FF-S-86 TYPE VIII
Cage Code:
81348
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 5305-00-840-4257
What are the manufacturers of nsn 5305008404257?
Does this nsn 5305008404257 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305008404257
An externally threaded fastener whose threaded portion is of one nominal diameter. the head has an internal socket or multiple spline for use with an inserted driver. a locking feature may be incorporated in the design of the head or threads. excludes items with bevel (conical) heads. see bolt, internal wrenching. excludes screw, shoulder; and screw, machine.
Does nsn 5305008404257 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305008404257 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305008404257?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
App. Key:
SC
Cond. Code:
1
Status:
A

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