MS20038-24

View detailed technical data, stock status, and sourcing information for: MS20038-24
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-049-2157

Item Name Code

01847

Assigment Date

10/13/1977 (48 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes:undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.

0.796 inches minimum and 0.875 inches maximum thread length, 3a thread class, hexagon head style, right-hand thread direction, 3.312 inches minimum and 3.359 inches maximum fastener length

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: 0.796 inches minimum and 0.875 inches maximum
Fastener Length: 3.312 inches minimum and 3.359 inches maximum
Head Style: hexagon
Head Height: 0.265 inches minimum and 0.297 inches maximum
Width Between Flats: 0.740 inches minimum and 0.752 inches maximum
Nominal Thread Diameter: 0.500 inches
Grip Length: 2.484 inches minimum and 2.516 inches maximum
Features Provided: finished head
Thread Quantity Per Inch: 20
Hardness Rating: 27.0 rockwell c minimum and 37.0 rockwell c maximum overall
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Surface Finish: 63.0 microinches bearing surface of head
Material: steel corrosion resisting overall
Thread Series Designator: unjf

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
LE20038-24	Machine Bolt
MS20038-24	Machine Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-049-2157?

The FSCG of the NSN 5306-01-049-2157 is 5306

Does the NSN 5306-01-049-2157 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-049-2157 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 5306-01-049-2157 contain precious materials?

Precious metal content is unknown

Does NSN 5306-01-049-2157 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 5306-01-049-2157 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Thu, Oct 13, 1977