5305-01-228-0556

Find complete technical information, availability, and procurement data for: 5305-01-228-0556
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-228-0556

Item Name Code

18257

Assigment Date

03/13/1986 (40 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 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 designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes:bolt, internal wrenching and screw, cap, socket head.

7.24 millimeters minimum and 7.76 millimeters maximum head height, right-hand thread direction, 29.60 millimeters minimum and 30.40 millimeters maximum fastener length, 29.1 millimeters minimum and 30.4 millimeters maximum thread length, 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 Direction: right-hand
Thread Length: 29.1 millimeters minimum and 30.4 millimeters maximum
Fastener Length: 29.60 millimeters minimum and 30.40 millimeters maximum
Head Style: hexagon
Head Height: 7.24 millimeters minimum and 7.76 millimeters maximum
Width Between Flats: 17.73 millimeters minimum and 18.00 millimeters maximum
Nominal Thread Diameter: 12.0 millimeters
Minimum Tensile Strength: 116000 pounds per square inch
Hardness Rating: 23.0 rockwell c minimum and 32.0 rockwell c maximum overall
Thread Pitch In Millimeters: 1.75
Material: steel property class 8.8 overall
Surface Treatment: zinc and dichromate overall
Thread Series Designator: m

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
423-630	Hexagon Head Cap Screw
908-225	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-228-0556?

The FSCG of the NSN 5305-01-228-0556 is 5305

Does the NSN 5305-01-228-0556 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-228-0556 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 5305-01-228-0556 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-228-0556 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 5305-01-228-0556 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Thu, Mar 13, 1986