MIL-D-20550

View detailed technical data, stock status, and sourcing information for: MIL-D-20550
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 MIL-D-20550 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Nonmetallic Fabricated Materials

Federal Supply Classification

9390 Miscellaneous Fabricated Nonmetallic Materials

National Stock Number

9390-00-290-5089

Item Name Code

16139

Assigment Date

01/01/1963 (63 years ago)

A cylindrical item which may have wrenching and/or driving facilities and/or shoulders. It is designed to be inserted in a drilled, tapped or a pretapped hole, or molded or pressed into soft material to reduce the size of a tapped hole; to provide threads; to add strength, and/or to prevent stripping. It is one of the following: (1) a one-piece, flanged or unflanged, internally threaded item which may have external threads, and/or serrations around the periphery of the collar, designed to engage a serrated lock ring which is not included with the item; (2) a one-piece precision coiled wire; (3) a two-piece item consisting of an internally threaded cylinder and a mating externally threaded part; or (4) a one-piece internally threaded item whose outside diameter is tapered and/or knurled and/or with fin(s). The internal thread of the item may have a locking feature. Excludes:items having a sleeve on on its under portion which can be clinched or crimped. Excludes:bushing,machine thread; nut,plain,knurled; nut,plain,round; nut,plain,clinch and nut,self-locking,clinch. See also nut,plain,plate

50 lb content within each unit package, silicon dioxide 87 percent min to 93 percent max chemical composition percentage, bag unit package type, powder physical form, flux calcined preparation method

Product Characteristics

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

Physical Form: powder
Unit Package Type: bag
Chemical Composition Percentage: silicon dioxide 87 percent min to 93 percent max
Content Within Each Unit Package: 50 lb
Preparation Method: flux calcined
Particle Size Gradation Percentage: uss sieve size no. 150 4 pct max retained and uss sieve size no. 325 20 pct retained
Supplementary Features: not for use in swimming pool filters
Nondefinitive Spec/Std Data: b grade

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
MIL-D-20550	Diatomaceous Earth
MW-27	Diatomaceous Earth

FAQs

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

What is the FSCG of the NSN 9390-00-290-5089?

The FSCG of the NSN 9390-00-290-5089 is 9390

Does the NSN 9390-00-290-5089 have a Schedule B code assigned?

Yes, the Schedule B code is 2512000000

Does NSN 9390-00-290-5089 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 9390-00-290-5089 contain precious materials?

Precious metal content is unknown

Does NSN 9390-00-290-5089 contain hazardous materials?

Indicates information is in the hazardous materials information resource system (hmirs).

When the NSN 9390-00-290-5089 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963