5305-00-143-1840

Find complete technical information, availability, and procurement data for: 5305-00-143-1840
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 5305-00-143-1840 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-143-1840

Item Name Code

16282

Assigment Date

09/20/1968 (57 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

0.225 inches minimum and 0.291 inches maximum thread length, right-hand thread direction, 3a thread class, 0.485 inches minimum and 0.531 inches maximum fastener 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: 0.225 inches minimum and 0.291 inches maximum
Fastener Length: 0.485 inches minimum and 0.531 inches maximum
Head Style: flat countersunk
Head Diameter: 0.200 inches minimum and 0.225 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.112 inches
Thread Quantity Per Inch: 40
Minimum Tensile Strength: 125000 pounds per square inch
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Material: steel comp 4037 or steel comp 8630 overall
Material Document And Classification: ams 6300 assn std 1st material response or mil-s-6050 mil spec 2nd material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec all treatment responses overall
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
LK21091-04004	Socket Head Cap Screw
MS21091-04004	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-143-1840?

The FSCG of the NSN 5305-00-143-1840 is 5305

Does the NSN 5305-00-143-1840 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-143-1840 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 5305-00-143-1840 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-143-1840 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 5305-00-143-1840 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Fri, Sep 20, 1968