1811653-18

View detailed technical data, stock status, and sourcing information for: 1811653-18
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-113-3557

Item Name Code

33044

Assigment Date

05/21/1981 (45 years ago)

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

0.281 inches nominal thread length, knurled no. 4 head style, 0.656 inches nominal fastener length, right-hand thread direction, 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: 0.281 inches nominal
Fastener Length: 0.656 inches nominal
Head Style: knurled no. 4
Head Diameter: 0.312 inches nominal
Head Height: 0.188 inches nominal
Material Accommodated Thickness: 0.115 inches minimum and 0.130 inches maximum
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Special Features: straight knurl
Material: steel corrosion resisting fastener
Material: steel corrosion resisting stand-off
Material: steel corrosion resisting spring
Surface Treatment: oxide stand-off
Surface Treatment: passivate spring
Surface Treatment: oxide fastener
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
0N295545	Panel Screw Assembly
1811653-18	Panel Screw Assembly
53-28-606-24	Panel Screw Assembly
53-28-606-26	Panel Screw Assembly

FAQs

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

What is the FSCG of the NSN 5305-01-113-3557?

The FSCG of the NSN 5305-01-113-3557 is 5305

Does the NSN 5305-01-113-3557 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-113-3557 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 5305-01-113-3557 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-113-3557 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 5305-01-113-3557 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Thu, May 21, 1981