5305-01-390-0038

Find complete technical information, availability, and procurement data for: 5305-01-390-0038
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-390-0038

Item Name Code

06657

Assigment Date

05/10/1994 (32 years ago)

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

1.922 inches minimum and 1.968 inches maximum fastener length, 3a thread class, right-hand thread direction, 0.312 inches nominal 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: 0.312 inches nominal
Fastener Length: 1.922 inches minimum and 1.968 inches maximum
Head Style: flat countersunk
Head Diameter: 0.257 inches minimum and 0.279 inches maximum
Locking Feature: patch or pellet or strip
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material: steel comp 4037 or steel comp 8630
Screw Material Document And Classification: ams 6300 assn std single material response or mil-s-6050 mil spec single material response
Screw Surface Treatment: cadmium and chromate
Screw Surface Treatment Document And Classification: qq-p-416 ty2 cl3 fed spec single treatment response
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
MS21091-06-026	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-390-0038?

The FSCG of the NSN 5305-01-390-0038 is 5305

Does NSN 5305-01-390-0038 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 5305-01-390-0038 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-390-0038 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 5305-01-390-0038 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Tue, May 10, 1994