NAS1743C4T8U

View detailed technical data, stock status, and sourcing information for: NAS1743C4T8U
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-007-6171

Item Name Code

16282

Assigment Date

07/12/1972 (54 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.

right-hand thread direction, flat chamfer head style, 0.413 inches minimum and 0.516 inches maximum thread length, 0.484 inches minimum and 0.516 inches maximum fastener length, 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: 0.413 inches minimum and 0.516 inches maximum
Fastener Length: 0.484 inches minimum and 0.516 inches maximum
Head Style: flat chamfer
Head Diameter: 0.367 inches minimum and 0.375 inches maximum
Head Height: 0.133 inches minimum and 0.150 inches maximum
Locking Feature: patch threads
Internal Drive Style: offset cruciform (torque set)
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 34.0 rockwell c minimum and 40.0 rockwell c maximum overall
Surface Finish: 32.0 microinches bearing surface of head
Surface Finish: 32.0 microinches threads
Material: iron alloy 660 overall
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas1743 professional/industrial association standard

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
NAS1743C4T8U	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-007-6171?

The FSCG of the NSN 5305-00-007-6171 is 5305

Does the NSN 5305-00-007-6171 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-007-6171 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 5305-00-007-6171 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-007-6171 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 5305-00-007-6171 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Wed, Jul 12, 1972