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Socket Head Cap Screw NSN 5305-00-273-7438

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 5305-00-273-7438 NSN: 5305-00-273-7438

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.000 inches
Fastener Length
1.875 inches
Head Style
Flat chamfer
Head Diameter
Between 0.429 inches and 0.437 inches
Head Height
Between 0.306 inches and 0.312 inches
Internal Drive Style
Hexagon
Thread Diameter
0.312 inches
Width Across Flats
Between 0.218 inches and 0.220 inches
Thready Qty Per Inch (tpi)
24
Hardness Rating
36.0 rockwell c and 43.0 rockwell c
Minimum Yield Strength
140000 pounds per square inch
Material
Steel comp 4135 or steel comp 4137 or steel comp 8635 or steel comp 8640
Material Specification
Qq-s-624 federal specification all material responses
Surface Treatment
Zinc
Surface Treatment Specification
Qq-z-325, type 2, class 3 federal specification single treatment response
Thread Series Designator
Unf
Nondefinitive Specification/std Data
1 type and 11 style
FSC
5305 Screws
NIIN
002737438
NSN
5305002737438

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
FFS86TYPE1STYLE11
Cage Code:
81348
Status:
A
MSDS:
Part Number:
166379PC15
Cage Code:
10001
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 5305-00-273-7438
What are the manufacturers of nsn 5305002737438?
Does this nsn 5305002737438 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305002737438
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 5305002737438 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305002737438 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305002737438?
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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