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Socket Head Cap Screw NSN 5305-00-298-1178

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 5305-00-298-1178 NSN: 5305-00-298-1178

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.669 inches and 0.820 inches
Fastener Length
Between 0.928 inches and 0.948 inches
Head Style
Flat chamfer
Head Diameter
Between 0.428 inches and 0.448 inches
Head Height
Between 0.250 inches and 0.270 inches
Hole Diameter
0.070 inches
Internal Drive Style
Hexagon
Thread Diameter
0.250 inches
Width Across Flats
Between 0.219 inches and 0.221 inches
Hole Quantity
6
Hole Type
Drilled
Thready Qty Per Inch (tpi)
28
Hardness Rating
32.0 rockwell c and 36.0 rockwell c
Hole Configuration Style
Round
Surface Finish
63.0 microinches grip
Material
Steel comp 8740
Material Specification
Ams 6322 assn standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Ams 2400 assn standard single treatment response
Thread Series Designator
Unf
FSC
5305 Screws
NIIN
002981178
NSN
5305002981178

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
AN148663
Cage Code:
88044
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 5305-00-298-1178
What are the manufacturers of nsn 5305002981178?
Does this nsn 5305002981178 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305002981178
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 5305002981178 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305002981178 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305002981178?
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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