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Close Tolerance Screw NSN 5305-01-521-5381

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 5305-01-521-5381 NSN: 5305-01-521-5381

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.650 inches
Fastener Length
0.812 inches
Head Style
Pan
Head Diameter
Between 0.357 inches and 0.373 inches
Head Height
Between 0.087 inches and 0.097 inches
Grip Diameter
Between 0.1885 inches and 0.1895 inches
Point Length
0.100 inches
Point Diameter
Between 0.142 inches and 0.147 inches
Point Style
Chamfer dog
Internal Drive Style
Cross recess type 1
End Application
Newman mh-60r
Thread Diameter
0.190 inches
Grip Length
0.062 inches
Thready Qty Per Inch (tpi)
32
Point Chamfer Angle
45.0 degrees
Part Name Assigned By Controlling Agency
Navy special project
Special Features
Two parallel keyways are cut into threads 180 degrees apart, length of keyways are 0.672 inches.
Material
Stainless steel
Material Specification
Qq-s-763, 300 series federal specification all material responses
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unf
FSC
5305 Screws
NIIN
015215381
NSN
5305015215381

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
CA21062-10-2-13
Cage Code:
29372
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 5305-01-521-5381
What are the manufacturers of nsn 5305015215381?
Does this nsn 5305015215381 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305015215381
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 5305015215381 contain any precious metals?
No precious metal content.
Does nsn 5305015215381 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305015215381?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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