503496

View detailed technical data, stock status, and sourcing information for: 503496
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-143-1373

Item Name Code

06657

Assigment Date

07/17/1968 (58 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

3a thread class, round head style, right-hand thread direction, 0.428 inches minimum and 0.510 inches maximum thread length, 0.490 inches minimum and 0.510 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: 0.428 inches minimum and 0.510 inches maximum
Fastener Length: 0.490 inches minimum and 0.510 inches maximum
Head Style: round
Head Diameter: 0.419 inches minimum and 0.437 inches maximum
Head Height: 0.125 inches minimum and 0.135 inches maximum
Internal Drive Style: torque set
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 130000 pounds per square inch
Screw Material: iron alloy 660
Screw Material Document And Classification: ams 5735 assn std single material response
Thread Series Designator: unjf

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
503496	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-143-1373?

The FSCG of the NSN 5305-00-143-1373 is 5305

Does the NSN 5305-00-143-1373 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-143-1373 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 5305-00-143-1373 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-143-1373 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 5305-00-143-1373 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Wed, Jul 17, 1968