903898-1

View detailed technical data, stock status, and sourcing information for: 903898-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-147-4880

Item Name Code

01852

Assigment Date

02/17/1983 (43 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is not designed to be held or driven with an inserted drivers. A locking feature may be incorporated in the design of the head or threads. For items with a thread diameter smaller than no. 10 (0.190 in.) (5 mm) and those items with an inserted drive head, use screw, shoulder. For items which are no. 10 (0.190 in.) (5 mm) or larger in size and are both shouldered and have an externally relieved body, use bolt, externally relieved body. Excludes:thumbscrew.

right-hand thread direction, 2a thread class, flat chamfer head style, 0.266 inches nominal fastener length, 0.109 inches nominal thread 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: 2a
Thread Direction: right-hand
Thread Length: 0.109 inches nominal
Fastener Length: 0.266 inches nominal
Head Style: flat chamfer
Head Diameter: 0.188 inches nominal
Head Height: 0.050 inches minimum
First Diameter From Head: 0.120 inches minimum and 0.123 inches maximum
Second Diameter From Head: 0.058 inches minimum and 0.063 inches maximum
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.112 inches minimum and 0.117 inches maximum
Distance From Largest Bearing Surface Of Head To End Of Second Diameter: 0.157 inches nominal
Internal Drive Style: slot
Nominal Thread Diameter: 0.086 inches
Thread Quantity Per Inch: 56
Externally Relieved Body Diameter Quantity: 2
Material: steel corrosion resisting overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response 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
903898-1	Externally Relieved Body Screw

FAQs

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

What is the FSCG of the NSN 5305-01-147-4880?

The FSCG of the NSN 5305-01-147-4880 is 5305

Does the NSN 5305-01-147-4880 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-147-4880 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 5305-01-147-4880 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-147-4880 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 5305-01-147-4880 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Thu, Feb 17, 1983