21C1599-22

View detailed technical data, stock status, and sourcing information for: 21C1599-22
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-939-0850

Item Name Code

05277

Assigment Date

11/16/1965 (60 years ago)

A nut having a sleeve portion on its under side, which can be crimped or clinched to hold the item in place when inserted in a hole.

3b thread class, soluble lubricant lubrication, right-hand thread direction, hexagon nut style, prevailing torque with nonmetallic insert locking feature

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3b
Thread Direction: right-hand
Locking Feature: prevailing torque with nonmetallic insert
Lubrication: soluble lubricant
Nut Style: hexagon
Nut Height: 0.188 inches maximum
End Item Identification: w/s:stream (std. tensioned replenishment at sea method); fire control system, missile mk74 (fcs); support equipment, b-1 aircraft; guided missile launching system, mk 26 (gmls); airborne mobile dir air spt ctl (2id), (02m jul83)(an/uyq-3a); support equipment, b-52 aircraft; radar set, an/tpn-18; aircraft, sof (ac-130h, mc-130h, ec-130e, hc-130); communications terminal, satellite an/gsc-39(v)1; multiple launch rocket system (mlrs); a4 bradley fighting vehicle; a3 bradley fighting vehicle
Width Across Flats: 0.336 inches minimum and 0.345 inches maximum
Temp Rating: 250.0 fahrenheit maximum
Thread Series: unjc
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.164 inches
Countersink Angle: 88.0 degrees minimum nut
Bearing Surface Type: chamfered or washer faced
Bearing Surface Finish: 125.0 microinches
Material: plastic polyamide (nylon) locking insert
Material: steel corrosion resisting nut
Surface Treatment: passivate nut
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall except insert

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-523-2035	No Name Available	01/01/1979
5310-00-527-3348	Hexagon Self-Locking Nut	07/01/2025
5310-00-596-7981	No Name Available	01/01/1979
5310-01-024-4547	No Name Available	03/01/1978
5310-01-224-2402	No Name Available	11/01/2006

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
001-00448-0A	Hexagon Self-Locking Nut
002-004048-003	Hexagon Self-Locking Nut
0740701	Hexagon Self-Locking Nut
1006496	Hexagon Self-Locking Nut
114-0576-003	Hexagon Self-Locking Nut
15013-007	Hexagon Self-Locking Nut
15013-7	Hexagon Self-Locking Nut
1V0064-00	Hexagon Self-Locking Nut
203688C7	Hexagon Self-Locking Nut
2052907-6	Hexagon Self-Locking Nut
21C1599-22	Hexagon Self-Locking Nut
5310PL0738234	Hexagon Self-Locking Nut
75NTM82	Hexagon Self-Locking Nut
79NTM82	Hexagon Self-Locking Nut
C15013-007	Hexagon Self-Locking Nut
E1211163	Hexagon Self-Locking Nut
E21341-03	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-939-0850?

The FSCG of the NSN 5310-00-939-0850 is 5310

Does the NSN 5310-00-939-0850 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-939-0850 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 5310-00-939-0850 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-939-0850 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 5310-00-939-0850 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Tue, Nov 16, 1965