SMTE9925-4

View detailed technical data, stock status, and sourcing information for: SMTE9925-4
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-338-0949

Item Name Code

29730

Assigment Date

04/26/1991 (35 years ago)

A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more notches. Excludes:thrust type washers.

right-hand thread direction, 0.386 inches minimum washer outside diameter, 0.188 inches nominal overall height, prevailing torque all metal design locking feature, 3b thread class

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
Washer Outside Diameter: 0.386 inches minimum
Overall Height: 0.188 inches nominal
Nut Style: slotted hexagon
Washer Thickness: 0.020 inches nominal
Width Across Flats: 0.306 inches minimum and 0.316 inches maximum
Temp Rating: 450.0 fahrenheit maximum
Thread Series: unjf
Thread Quantity Per Inch: 28
Nominal Thread Size: 0.250 inches
Special Features: dry film lubricant
Material: iron alloy 660 overall
Material Document And Classification: ams 5732 assn std single material response overall
Surface Treatment: passivate nut
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response nut

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
03A187-4L	Extended Washer Self-Locking Nut
BH187-4	Extended Washer Self-Locking Nut
SMTE9925-4	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-338-0949?

The FSCG of the NSN 5310-01-338-0949 is 5310

Does the NSN 5310-01-338-0949 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-338-0949 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 5310-01-338-0949 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-338-0949 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 5310-01-338-0949 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Fri, Apr 26, 1991