5306-00-591-0870

Find complete technical information, availability, and procurement data for: 5306-00-591-0870
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-591-0870

Item Name Code

21861

Assigment Date

01/01/1963 (63 years ago)

A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). For items having other than a round or hexagon peripheral shape, see spacer, plate. Excludes:items with lubricating features, see bearing, sleeve and bushing, sleeve. See also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).

0.250 inches nominal width between flats, 2a thread class, 0.078 inches nominal head height, 0.219 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: 2a
Thread Direction: right-hand
Fastener Length: 0.219 inches nominal
Head Height: 0.078 inches nominal
Width Between Flats: 0.250 inches nominal
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 40
Special Features: extention on flat 0.188 in. lg,with slot
Material: steel comp 303 overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec 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
SM-B-187165	Eccentric Head Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-591-0870?

The FSCG of the NSN 5306-00-591-0870 is 5306

Does the NSN 5306-00-591-0870 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-591-0870 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 5306-00-591-0870 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-00-591-0870 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 5306-00-591-0870 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963