03-23090E01

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-943-2159

Item Name Code

06657

Assigment Date

12/21/1965 (59 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.

0.531 inches minimum and 0.562 inches maximum fastener length, right-hand thread direction, fillister head style, 2a thread class, 0.469 inches minimum and 0.562 inches maximum thread length

Characteristics

Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.469 inches minimum and 0.562 inches maximum
Fastener Length: 0.531 inches minimum and 0.562 inches maximum
Head Style: fillister
Head Diameter: 0.208 inches minimum and 0.226 inches maximum
Head Height: 0.086 inches minimum and 0.096 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Screw Material: steel comp 303
Screw Material Document And Classification: qq-s-764 cond a fed spec single material response
Screw Surface Treatment: passivate
Screw Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response
Thread Series Designator: unc

Related Parts & Specifications

This NSN includes a range of related parts designed for specific operational needs. Review each item below to find in-depth specifications, functional details, and guidance for correct application and replacement.

Part Number	Name
03-23090E01	Machine Screw

FAQs

Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for 03-23090E01

What is the FSCG of the NSN 5305-00-943-2159?

The FSCG of the NSN 5305-00-943-2159 is 5305

Does the NSN 5305-00-943-2159 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-943-2159 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 5305-00-943-2159 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-943-2159 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 5305-00-943-2159 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Tue, Dec 21, 1965