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Close Tolerance Screw NSN 5305-01-521-5144

Item Description

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

NSN 5305-01-521-5144 NSN: 5305-01-521-5144

  Stock Availability

NSN 5305015215144 availability
(as of 04/19/2021).

  • NS: 12
  • NE: 668

Note: Availability of this item may have changed since it was last checked. Request a quote for an updated price and availability quote.

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.375 inches
Fastener Length
Between 1.235 inches and 1.265 inches
Head Style
Flat chamfer
Head Diameter
Between 0.594 inches and 0.615 inches
Head Height
Between 0.203 inches and 0.218 inches
Spline Minor Diameter
Between 0.157 inches and 0.160 inches
Spline Major Diameter
Between 0.219 inches and 0.222 inches
Locking Feature
Prevailing torque all metal design
Grip Diameter
Between 0.3115 inches and 0.3120 inches
Internal Drive Style
Torx
End Application
Mv-22 aircraft
Thread Diameter
0.3125 inches
Grip Length
Between 0.865 inches and 0.885 inches
Thready Qty Per Inch (tpi)
24
Criticality Code Justification
Agav
Part Name Assigned By Controlling Agency
Screw, pan head, close tolerance, short thread, six lobe
Special Features
Per asme b46.1. "d" diameter underside of head, root of threads and thread flanks 32 microinches ra. All other surfaces, 125 microinches ra.
Material
Iron alloy 660
Material Specification
Ams 5731 a286 assn standard single material response or ams 5732 a286 assn standard single material response or ams 5737 a286 assn standard single material response or ams 5853 a268 assn standard single material response
Surface Treatment
Passivate
Surface Treatment Specification
Ams-qq-p-35, type ii or viii assn standard single treatment response
Thread Series Designator
Unjf
FSC
5305 Screws
NIIN
015215144
NSN
5305015215144

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
BACS12HW5AU14
Cage Code:
81205
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 5305-01-521-5144
What are the manufacturers of nsn 5305015215144?
Does this nsn 5305015215144 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305015215144
A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. the head is designed to be held or driven with an inserted driver. it is not designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads.
Does nsn 5305015215144 contain any precious metals?
No precious metal content.
Does nsn 5305015215144 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305015215144?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
29294
FIIG:
A003B0
App. Key:
SS
Cond. Code:
1
Status:
A

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