5305-01-421-8399

Find complete technical information, availability, and procurement data for: 5305-01-421-8399
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-421-8399

Item Name Code

06657

Assigment Date

11/16/1995 (30 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

0.320 inches minimum and 0.380 inches maximum fastener length, 0.330 inches maximum thread length, right-hand thread direction, flat countersunk head style, 3a thread class

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: 0.330 inches maximum
Fastener Length: 0.320 inches minimum and 0.380 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 or ams 4957 assn std single material response
Bearing Surface Of Head Surface Finish: 63.0 microinches
Thread Surface Finish: 32.0 microinches
Thread Series Designator: unjc

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111407-04-6	Machine Screw
3D0068-04-6	Machine Screw
AIC1198-04-6	Machine Screw
SC5064-04-6	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-421-8399?

The FSCG of the NSN 5305-01-421-8399 is 5305

Does the NSN 5305-01-421-8399 have a Schedule B code assigned?

Yes, the Schedule B code is 8108908000

Does NSN 5305-01-421-8399 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 5305-01-421-8399 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-421-8399 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 5305-01-421-8399 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Thu, Nov 16, 1995