H41-640

View detailed technical data, stock status, and sourcing information for: H41-640
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-129-1610

Item Name Code

29730

Assigment Date

04/01/1982 (44 years ago)

A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.

3b thread class, 0.244 inches maximum washer outside diameter, 0.141 inches maximum overall height, right-hand thread direction, prevailing torque all metal design 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 all metal design
Washer Outside Diameter: 0.244 inches maximum
Overall Height: 0.141 inches maximum
Nut Style: hexagon
Washer Thickness: 0.032 inches nominal
Width Across Flats: 0.154 inches nominal
Temp Rating: 900.0 fahrenheit nominal
Thread Series: unjf
Thread Quantity Per Inch: 40
Nominal Thread Size: 0.138 inches
Material: iron alloy 660 overall
Precious Material And Location: overall silver
Precious Material: silver
Surface Treatment: silver overall
Surface Treatment Document And Classification: ams2410 assn std 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
H41-640	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-129-1610?

The FSCG of the NSN 5310-01-129-1610 is 5310

Does the NSN 5310-01-129-1610 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-129-1610 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 5310-01-129-1610 contain precious materials?

Item contains silver.

Does NSN 5310-01-129-1610 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 5310-01-129-1610 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Thu, Apr 1, 1982