5305-01-420-1821

Find complete technical information, availability, and procurement data for: 5305-01-420-1821
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-420-1821

Item Name Code

06657

Assigment Date

10/11/1995 (30 years ago)

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.

3a thread class, 0.410 inches minimum and 0.440 inches maximum fastener length, right-hand thread direction, 0.390 inches maximum thread length, flat countersunk head style

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: 0.390 inches maximum
Fastener Length: 0.410 inches minimum and 0.440 inches maximum
Head Style: flat countersunk
Head Diameter: 0.193 inches minimum and 0.226 inches maximum
Internal Drive Style: cross recess type iii
Nominal Thread Diameter: 0.112 inches
Thread Quantity Per Inch: 40
Minimum Tensile Strength: 160000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material: titanium alloy uns r56400
Screw Material Document And Classification: ams 4928 assn std single material response and ams 4967 assn std single material response
Thread Series Designator: unjc

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
111407-04-7	Machine Screw
SC5064-04-7	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-420-1821?

The FSCG of the NSN 5305-01-420-1821 is 5305

Does the NSN 5305-01-420-1821 have a Schedule B code assigned?

Yes, the Schedule B code is 8108908000

Does NSN 5305-01-420-1821 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 5305-01-420-1821 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-420-1821 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 5305-01-420-1821 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Wed, Oct 11, 1995