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Socket Head Cap Screw NSN 5305-00-143-1840

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 5305-00-143-1840 NSN: 5305-00-143-1840

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.225 inches and 0.291 inches
Fastener Length
Between 0.485 inches and 0.531 inches
Head Style
Flat countersunk
Head Diameter
Between 0.200 inches and 0.225 inches
Internal Drive Style
Cross recess type 1
Thread Diameter
0.112 inches
Thready Qty Per Inch (tpi)
40
Min. Tensile Strength (psi)
125000 pounds per square inch
Hardness Rating
26.0 rockwell c and 32.0 rockwell c
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Material
Steel comp 4037 or steel comp 8630
Material Specification
Ams 6300 assn standard 1st material response or mil-s-6050 military specification 2nd material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification all treatment responses
Thread Series Designator
Unc
FSC
5305 Screws
NIIN
001431840
NSN
5305001431840

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
MS21091-04004
Cage Code:
80205
Status:
A
MSDS:
Part Number:
LK21091-04004
Cage Code:
26304
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 5305-00-143-1840
What are the manufacturers of nsn 5305001431840?
Does this nsn 5305001431840 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305001431840
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 5305001431840 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305001431840 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305001431840?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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