21FAF616

View detailed technical data, stock status, and sourcing information for: 21FAF616
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-458-2382

Item Name Code

05277

Assigment Date

05/09/1969 (57 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.

2b thread class, prevailing torque all metal design locking feature, soluble lubricant lubrication, hexagon nut style, 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: 2b
Thread Direction: right-hand
Locking Feature: prevailing torque all metal design
Lubrication: soluble lubricant
Nut Style: hexagon
Nut Height: 0.462 inches maximum
End Item Identification: w/s:oliver perry class ffg; kidd class ddg, engine, aircraft f110-ge-400; ticonderoga class cg (47); spruance class dd (963); truck, cargo, dropside 2 1/2-ton 6x6 w/e; helicopter, mh-53e; supply class aoe; aircraft, t-39; fans
Width Across Flats: 0.553 inches minimum and 0.564 inches maximum
Thread Series: unc
Thread Quantity Per Inch: 16
Nominal Thread Size: 0.375 inches
Bearing Surface Type: chamfered
Material: steel overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 1,cl 3 fed spec single treatment response overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-01-020-0931	No Name Available	02/01/1983
5310-01-050-3832	No Name Available	06/01/2006

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
21FAF616	Hexagon Self-Locking Nut
21FAF616 3-8 16UNC-2B	Hexagon Self-Locking Nut
23FAF-616	Hexagon Self-Locking Nut
5310PL0637476	Hexagon Self-Locking Nut
80009 ADX	Hexagon Self-Locking Nut
85D6	Hexagon Self-Locking Nut
FF9237-06S	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-458-2382?

The FSCG of the NSN 5310-00-458-2382 is 5310

Does the NSN 5310-00-458-2382 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-458-2382 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 5310-00-458-2382 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-458-2382 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 5310-00-458-2382 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Fri, May 9, 1969