5305-01-552-2227

Find complete technical information, availability, and procurement data for: 5305-01-552-2227
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-552-2227

Item Name Code

18257

Assigment Date

06/08/2007 (19 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.)

2a thread class, 2.500 inches nominal fastener length, 1.250 inches nominal thread length, right-hand thread direction, hexagon head style

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: 1.250 inches nominal
Fastener Length: 2.500 inches nominal
Head Style: hexagon
Head Height: 0.302 inches minimum and 0.323 inches maximum
Width Between Flats: 0.736 inches minimum and 0.750 inches maximum
End Item Identification: mark 38,model 2
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 20
Part Name Assigned By Controlling Agency: hex cap screw (finished hex bolt)
Material: steel corrosion resisting overall
Material Document And Classification: astm f593,alloy grp 2.default code cw assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: astm a380 assn std single treatment response overall
Thread Series Designator: unf

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
AES01F500B50CH6A31	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-552-2227?

The FSCG of the NSN 5305-01-552-2227 is 5305

Does the NSN 5305-01-552-2227 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-552-2227 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 5305-01-552-2227 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-552-2227 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 5305-01-552-2227 was assigned to the Federal Catalog?

It was assigned 19 years ago, on Fri, Jun 8, 2007