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Socket Head Cap Screw NSN 5305-01-645-2981

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 5305-01-645-2981 NSN: 5305-01-645-2981

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Features and Characteristics

Thread Class
2a
Thread Direction
Right-hand
Thread Length
1.000 inches
Fastener Length
1.000 inches
Head Style
Flat chamfer
Head Diameter
Between 0.365 inches and 0.375 inches
Head Height
Between 0.244 inches and 0.250 inches
Internal Drive Style
Hexagon
End Application
2350-01-577-0830
Thread Diameter
0.250 inches
Width Across Flats
0.188 inches
Thready Qty Per Inch (tpi)
28
Part Name Assigned By Controlling Agency
Screw cap hex socket head
Special Features
Undrilled head; optional-type self-locking element
Material
Steel uns k03104
Surface Treatment
Zinc
Thread Series Designator
Unf
FSC
5305 Screws
NIIN
016452981
NSN
5305016452981

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
B.18.24-2004
Cage Code:
05047
Status:
A
MSDS:
Part Number:
AES14F250A00BB3A86
Cage Code:
05047
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 5305-01-645-2981
What are the manufacturers of nsn 5305016452981?
Does this nsn 5305016452981 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305016452981
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 5305016452981 contain any precious metals?
No precious metal content.
Does nsn 5305016452981 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305016452981?
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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