NAS1677D20-20S

View detailed technical data, stock status, and sourcing information for: NAS1677D20-20S
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-01-345-2745

Item Name Code

05072

Assigment Date

09/14/1991 (34 years ago)

A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes:laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes:disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.

unable to decode cushioning material, 2.040 inches minimum and 2.100 inches maximum distance between mounting hole centers, 0.500 inches nominal overall width, 0.051 inches nominal material thickness, 2.478 inches minimum and 2.538 inches maximum overall length

Product Characteristics

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

Overall Length: 2.478 inches minimum and 2.538 inches maximum
Overall Width: 0.500 inches nominal
Material Thickness: 0.051 inches nominal
Distance Between Mounting Hole Centers: 2.040 inches minimum and 2.100 inches maximum
Cushioning Material: unable to decode
Cushion: included
Mounting Pad: not included
Mounting Hole Size: 0.204 inches nominal
Distance Between Base And Inside Of Arch: 1.378 inches minimum and 1.408 inches maximum
Inside Diameter/Arch Length: 1.235 inches minimum and 1.265 inches maximum
Special Features: arch is flat with rounded corners
Material: aluminum alloy 2024 and aluminum alloy 1230 or aluminum alloy 2024 and aluminum alloy 1230
Style Designator: saddle arch
Specification/Standard Data: 80205-nas1677 professional/industrial association standard

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
NAS1677D20-20S	Retaining Strap

FAQs

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

What is the FSCG of the NSN 5340-01-345-2745?

The FSCG of the NSN 5340-01-345-2745 is 5340

Does NSN 5340-01-345-2745 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 5340-01-345-2745 contain precious materials?

Item does not contain precious metal.

Does NSN 5340-01-345-2745 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5340-01-345-2745 was assigned to the Federal Catalog?

It was assigned 34 years ago, on Sat, Sep 14, 1991