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Socket Head Cap Screw NSN 5305-00-637-8421

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 5305-00-637-8421 NSN: 5305-00-637-8421

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Features and Characteristics

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.478 inches and 0.509 inches
Fastener Length
Between 0.594 inches and 0.625 inches
Head Style
Flat countersunk
Head Diameter
Between 0.348 inches and 0.385 inches
Locking Feature
Pellet threads
Internal Drive Style
Slot
Thread Diameter
0.190 inches
Thready Qty Per Inch (tpi)
24
Countersink Angle
81.0 degrees
Material
Steel comp 416
Surface Treatment
Passivate
Thread Series Designator
Unc
FSC
5305 Screws
NIIN
006378421
NSN
5305006378421

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
S572
Cage Code:
26233
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 5305-00-637-8421
What are the manufacturers of nsn 5305006378421?
Does this nsn 5305006378421 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305006378421
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 5305006378421 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305006378421 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305006378421?
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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