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Machine Screw NSN 5305-01-572-4121

Item Description

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

NSN 5305-01-572-4121 NSN: 5305-01-572-4121

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.523 inches
Fastener Length
0.676 inches
Head Style
Knurled no. 2
Head Diameter
0.500 inches
Head Height
0.309 inches
Hole Diameter
0.284 inches
Internal Drive Style
Slot
End Application
Screw, machine
Thread Diameter
0.190 inches
Hole Quantity
1
Thready Qty Per Inch (tpi)
32
Part Name Assigned By Controlling Agency
Turn-loc, low profile, optional recess
Screw Material
Aluminum alloy
Locking Feature Material
Aluminum alloy
Screw Material Specification
Msqq-a-225/8 mfr ref single material response
Locking Feature Material Specification
Amsqq-a-225/8 mfr ref 1st material response
Bearing Surface Of Head Surface Treatment
Anodize
Bearing Surface Of Head Surface Treatment Specification
Mil-a-8625 military specification 1st treatment response
Special Features
Discoloration of the black annodize may occur on the crimped protion ofthe knob during assembly
Color
Black
Thread Series Designator
Unf
FSC
5305 Screws
NIIN
015724121
NSN
5305015724121

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
DB7500-10-AA-3
Cage Code:
0HDW7
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7616106000
  • NAICS: 332722
  • SITC: 69440
  • Description: Threaded fasteners of aluminum
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5305-01-572-4121
What are the manufacturers of nsn 5305015724121?
Does this nsn 5305015724121 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305015724121
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). no. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. a locking feature may be incorporated in the design of the head or threads. excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. see also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
Does nsn 5305015724121 contain any precious metals?
No precious metal content.
Does nsn 5305015724121 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305015724121?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
06657
FIIG:
A500D0
App. Key:
Cond. Code:
1
Status:
A

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