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5305-01-043-0553

Find complete technical information, availability, and procurement data for: 5305-01-043-0553

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5305-01-043-0553
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-01-043-0553
Item Name Code
18257
Assigment Date
06/19/1977 (49 years ago)

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

2a thread class, right-hand thread direction, hexagon head style, 0.470 inches minimum and 0.490 inches maximum thread length, 1.430 inches minimum and 1.450 inches maximum fastener length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
2a
Thread Direction
right-hand
Thread Length
0.470 inches minimum and 0.490 inches maximum
Fastener Length
1.430 inches minimum and 1.450 inches maximum
Head Style
hexagon
Head Height
0.180 inches minimum and 0.200 inches maximum
Width Between Flats
0.240 inches minimum and 0.260 inches maximum
Shank Unthreaded Hole Diameter
0.062 inches minimum and 0.065 inches maximum first hole
Nominal Thread Diameter
0.190 inches
Thread Quantity Per Inch
32
Distance From Head Largest Bearing Surface To Shank Hole Center
0.870 inches minimum and 0.890 inches maximum first hole
Material
steel comp 302 overall
Surface Treatment
passivate overall
Thread Series Designator
unc

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
6379337-1 Hexagon Head Cap Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-01-043-0553?
The FSCG of the NSN 5305-01-043-0553 is 5305
Does the NSN 5305-01-043-0553 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-043-0553 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5305-01-043-0553 contain precious materials?
Precious metal content is unknown
Does NSN 5305-01-043-0553 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5305-01-043-0553 was assigned to the Federal Catalog?
It was assigned 49 years ago, on Sun, Jun 19, 1977

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