MS21083C18

View detailed technical data, stock status, and sourcing information for: MS21083C18
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-916-6587

Item Name Code

05277

Assigment Date

07/18/1966 (60 years ago)

A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes:flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. Excludes:disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.

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

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: 0.672 inches maximum
Width Across Flats: 1.614 inches minimum and 1.627 inches maximum
Temp Rating: 250.0 fahrenheit maximum
Thread Series: unjf
Thread Quantity Per Inch: 12
Nominal Thread Size: 1.125 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 overall except insert
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall except insert

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
002-004048-015	Hexagon Self-Locking Nut
79NTE-182	Hexagon Self-Locking Nut
MS21083C18	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-916-6587?

The FSCG of the NSN 5310-00-916-6587 is 5310

Does NSN 5310-00-916-6587 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 5310-00-916-6587 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-916-6587 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 5310-00-916-6587 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Mon, Jul 18, 1966