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Socket Head Cap Screw NSN 5305-01-256-5790

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 5305-01-256-5790 NSN: 5305-01-256-5790

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.178 inches and 0.198 inches
Fastener Length
Between 0.178 inches and 0.198 inches
Head Style
Roof
Head Diameter
Between 0.187 inches and 0.207 inches
Head Height
Between 0.054 inches and 0.074 inches
Internal Drive Style
Hexagon
Thread Diameter
0.086 inches
Width Across Flats
Between 0.040 inches and 0.060 inches
Thready Qty Per Inch (tpi)
56
Hardness Rating
36.0 rockwell c and 45.0 rockwell c
Countersink Angle
Between 80.0 degrees and 82.0 degrees
Material
Steel
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unc
FSC
5305 Screws
NIIN
012565790
NSN
5305012565790

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
16991-92-C-3-BUNBRAKO
Cage Code:
56878
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 5305-01-256-5790
What are the manufacturers of nsn 5305012565790?
Does this nsn 5305012565790 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305012565790
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 5305012565790 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305012565790 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305012565790?
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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