5305-01-538-6749

Find complete technical information, availability, and procurement data for: 5305-01-538-6749
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-538-6749

Item Name Code

06657

Assigment Date

03/29/2006 (20 years ago)

A fitting having three connections with the branch connection fixed at 90 degrees (1.5705 radians) to the run. The tube connection(s) has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube, or is unthreaded and designed to accommodate a tube. The boss connection(s) has external or internal machine threads (straight threads other than pipe or hose series), and is designed to facilitate a gasket, preformed packing, washer, or the like, to form a seal at the boss. It may have side inlet(s). It is used as a junction at the intersection of a tube or fitting and a boss or boss fitting on items such as a tank, housing, valve fitting, or the like. See also tee, tube; and tee, pipe to tube. Excludes:connector, multiple, fluid pressure line.

0.312 inches minimum head diameter, flat countersunk head style, 0.750 inches minimum fastener length, 0.750 inches minimum thread length, right-hand thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Direction: right-hand
Thread Length: 0.750 inches minimum
Fastener Length: 0.750 inches minimum
Head Style: flat countersunk
Head Diameter: 0.312 inches minimum
Internal Drive Style: slot
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Countersink Angle: 82.0 degrees minimum
Screw Material: steel comp 302
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
91781A197	Machine Screw
91810A197	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-538-6749?

The FSCG of the NSN 5305-01-538-6749 is 5305

Does the NSN 5305-01-538-6749 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-538-6749 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 5305-01-538-6749 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-538-6749 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 5305-01-538-6749 was assigned to the Federal Catalog?

It was assigned 20 years ago, on Wed, Mar 29, 2006