5305-01-353-1868

Find complete technical information, availability, and procurement data for: 5305-01-353-1868
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-353-1868

Item Name Code

33044

Assigment Date

02/06/1992 (34 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.)

0.451 inches nominal head diameter, knurled no. 1 head style, 3a thread class, 1.120 inches nominal fastener length, right-hand thread direction

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
Fastener Length: 1.120 inches nominal
Head Style: knurled no. 1
Head Diameter: 0.451 inches nominal
Head Height: 0.520 inches nominal
Internal Drive Style: hexagon
Material Accommodated Thickness: 0.156 inches minimum and 0.217 inches maximum
Nominal Thread Diameter: 0.250 inches
Width Across Flats: 0.156 inches nominal
Thread Quantity Per Inch: 20
Material: aluminum alloy 6061 headsteel comp 301 secondary washersteel comp 301 primary washersteel comp 302 springaluminum alloy 6061 stand-offsteel corrosion resisting fastener
Material Document And Classification: qq-a-225/8 fed spec single material response headmil-s-5059 mil spec single material response secondary washermil-s-5059 mil spec single material response primary washerqq-w-423 fed spec single material response springqq-a-225/8 fed spec single material response stand-offastm a493 300 series assn std single material response fastener
Surface Treatment: anodize headpassivate secondary washerpassivate primary washerpassivate springanodize stand-offpassivate fastener
Surface Treatment Document And Classification: mil-a-8625 ty1 cl1 mil spec single treatment response headqq-p-35 fed spec single treatment response secondary washerqq-p-35 fed spec single treatment response primary washerqq-p-35 fed spec single treatment response springmil-a-8625 ty1 cl1 mil spec single treatment response stand-offqq-p-35 fed spec single treatment response 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
FRB7500HS-12C-D-4	Panel Screw Assembly

FAQs

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

What is the FSCG of the NSN 5305-01-353-1868?

The FSCG of the NSN 5305-01-353-1868 is 5305

Does the NSN 5305-01-353-1868 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-353-1868 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 5305-01-353-1868 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-353-1868 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 5305-01-353-1868 was assigned to the Federal Catalog?

It was assigned 34 years ago, on Thu, Feb 6, 1992