HR203-4-13D

View detailed technical data, stock status, and sourcing information for: HR203-4-13D
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-273-2282

Item Name Code

29294

Assigment Date

02/22/1988 (38 years ago)

flat countersunk head style, right-hand thread direction, 3a thread class, 1.173 inches minimum and 1.220 inches maximum fastener length, 0.351 inches minimum and 0.418 inches maximum thread 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: 3a
Thread Direction: right-hand
Thread Length: 0.351 inches minimum and 0.418 inches maximum
Fastener Length: 1.173 inches minimum and 1.220 inches maximum
Head Style: flat countersunk
Head Diameter: 0.464 inches minimum and 0.507 inches maximum
Grip Diameter: 0.2485 inches minimum and 0.2495 inches maximum
Shank Unthreaded Hole Diameter: 0.071 inches minimum and 0.081 inches maximum first hole
Internal Drive Style: torque-set ribbed
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.802 inches minimum and 0.822 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 156000 pounds per square inch
Hardness Rating: 51.0 rockwell c minimum and 54.0 rockwell c maximum overall
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Distance From Head Largest Bearing Surface To Shank Hole Center: 1.005 inches minimum and 1.037 inches maximum first hole
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Part Name Assigned By Controlling Agency: navy special project
Material: steel comp h11 overall
Material Document And Classification: ams 6487 assn std single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: mil-c-8837,type 2 class 2 mil spec single treatment response overall
Thread Series Designator: unjf

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
HR203-4-13D	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-273-2282?

The FSCG of the NSN 5305-01-273-2282 is 5305

Does the NSN 5305-01-273-2282 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-273-2282 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 5305-01-273-2282 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-273-2282 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 5305-01-273-2282 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Mon, Feb 22, 1988