NAS1189-04P4B

View detailed technical data, stock status, and sourcing information for: NAS1189-04P4B
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-424-6538

Item Name Code

06657

Assigment Date

02/02/1996 (30 years ago)

"a fastening device formed from resilient wire stock into a shape resembling the letter "u", of which at least one of the prongs is straight for insertion into a hole; the other prong may have one or more curvatures along its length. It is designed to hold itself in place by its inherent spring action. See also clip, retaining and ring, retaining."

0.124 inches minimum and 0.205 inches maximum thread length, flat countersunk head style, 3a thread class, right-hand thread direction, 0.219 inches minimum and 0.250 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: 3a
Thread Direction: right-hand
Thread Length: 0.124 inches minimum and 0.205 inches maximum
Fastener Length: 0.219 inches minimum and 0.250 inches maximum
Head Style: flat countersunk
Head Diameter: 0.177 inches minimum and 0.225 inches maximum
Locking Feature: patch
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.112 inches
Thread Quantity Per Inch: 40
Minimum Tensile Strength: 180000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material: steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150
Locking Feature Material: plastic polyamide (nylon)
Screw Material Document And Classification: mil-s-5000 mil spec 1st material response or mil-s-5626 mil spec 2nd material response or mil-s-6049 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or 8503 mil spec 5th material response
Screw Surface Treatment: cadmium and chromate
Screw Surface Treatment Document And Classification: qq-p-416 ty2 cl2 fed spec single treatment response
Bearing Surface Of Head Surface Finish: 32.0 microinches
Shank Surface Finish: 32.0 microinches
Thread Surface Finish: 32.0 microinches
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
NAS1189-04P4B	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-424-6538?

The FSCG of the NSN 5305-01-424-6538 is 5305

Does the NSN 5305-01-424-6538 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-424-6538 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 5305-01-424-6538 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-424-6538 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 5305-01-424-6538 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Fri, Feb 2, 1996