5310-01-388-7943

Find complete technical information, availability, and procurement data for: 5310-01-388-7943
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-388-7943

Item Name Code

05277

Assigment Date

04/08/1994 (32 years ago)

A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use disk, solid, plain. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. For items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. When thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.

prevailing torque all metal design locking feature, right-hand thread direction, 3b thread class, 0.116 inches minimum and 0.156 inches maximum nut counterbore diameter, 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 all metal design
Counterbore Diameter: 0.116 inches minimum and 0.156 inches maximum nut
Lubrication: soluble lubricant
Nut Style: hexagon
Nut Height: 0.133 inches minimum and 0.157 inches maximum
Width Across Flats: 0.243 inches minimum and 0.251 inches maximum
Temp Rating: 250.0 fahrenheit nominal
Thread Series: unf
Thread Quantity Per Inch: 40
Nominal Thread Size: 0.112 inches
Countersink Angle: 88.0 degrees nominal nut
Bearing Surface Type: chamfered or washer faced
Bearing Surface Finish: 125.0 microinches
Material: steel overall except insert
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty 2, cl2 fed spec single treatment response overall

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
MS21044E-N04	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-388-7943?

The FSCG of the NSN 5310-01-388-7943 is 5310

Does the NSN 5310-01-388-7943 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-388-7943 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 5310-01-388-7943 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-388-7943 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 5310-01-388-7943 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Fri, Apr 8, 1994