178-031

View detailed technical data, stock status, and sourcing information for: 178-031
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part 178-031 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-381-2298

Item Name Code

05277

Assigment Date

10/11/1993 (32 years ago)

A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes:felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes:cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.

hexagon nut style, 2b thread class, right-hand thread direction, prevailing torque all metal design locking feature, 2.250 inches minimum and 2.376 inches maximum nut height

Product Characteristics

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

Thread Class: 2b
Thread Direction: right-hand
Locking Feature: prevailing torque all metal design
Nut Style: hexagon
Nut Height: 2.250 inches minimum and 2.376 inches maximum
Width Across Flats: 2.715 inches minimum and 2.762 inches maximum
Temp Rating: 121.0 celsius nominal
Thread Series: unf
Thread Quantity Per Inch: 12
Nominal Thread Size: 1.750 inches
Bearing Surface Type: chamfered
Material: plastic polyhexamethylene adipamide locking insert
Material: steel overall
Surface Treatment: zinc and chromate 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
178-031	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-381-2298?

The FSCG of the NSN 5310-01-381-2298 is 5310

Does the NSN 5310-01-381-2298 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-381-2298 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 5310-01-381-2298 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-381-2298 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 5310-01-381-2298 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Mon, Oct 11, 1993