Cross reference · MS (US military standards) · Screw thread insert
MS51830A cross reference
MS51830A is a screw thread insert series on 12 government stock numbers. Each one is labeled with how strong the evidence is.
- Issued by MS
- Item Screw thread insert
- Stock numbers 12
- Equivalents 6
- DLA paid $1.80
Equivalents in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
5 more on one stock number each: KN28JFSY, KN428FSY, KN42JFSY, KN820JMX, KN820MX10SX
- KN28JFSYHowmet Fastening SystemsCatalog only, needs approvalon 1 of 12 stock numbers
- KN428FSYHowmet Fastening SystemsCatalog only, needs approvalon 1 of 12 stock numbers
- KN42JFSYHowmet Fastening SystemsCatalog only, needs approvalon 1 of 12 stock numbers
- KN820JMXHowmet Fastening SystemsCatalog only, needs approvalon 1 of 12 stock numbers
- KN820MX10SXHowmet Fastening SystemsCatalog only, needs approvalon 1 of 12 stock numbers
Standards
- NAS1394NASCatalog only, needs approvalon 2 of 12 stock numbers, 2 sizes
Get quotes for MS51830A
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
Threaded inserts (key-locked MS51830 / Keenserts, helical coil MS21209) tooling (key-locked: standard drill, countersink and tap, then the keensert installation tool drives the keys. helical coil: sti tap, inserting tool, tang break-off tool)
Threaded inserts (key-locked MS51830 / Keenserts, helical coil MS21209) in the catalog
What the government paid
DLA awards on 1 of 12 stock numbers, 5 awards from 2023-11-17 to 2025-11-13.
Latest award per stock number: $1.80 each.
DLA production lead time: 20 to 249 days.
Per size in the table below.
DLA prices at DLA quantities, not a quote.Source
DLA award prices at DLA quantities and terms, not a commercial quote. Each award may bundle packaging, delivery and inspection terms that a commercial buy does not. Vendors are shown by CAGE code only.
Source: DLA FOIA Electronic Reading Room ↗, public FOIA releases. Files: 2023ContHist.zip/2023ContractHistory.txt, 2024ContHist.zip/2024ContractHistory.txt, contracthist2025.zip/contracthist2025.txt, 2026-09-16-1038_contracthist.zip/2026-09-16-1038_contracthist.txt.
Sizes by maker
| NSN | MS51830A | NAS1394 | Last DLA price |
|---|---|---|---|
| 5325-01-600-7251 | MS51830A10 | ||
| 5325-01-355-2977 | MS51830A102 | ||
| 5325-01-373-8732 | MS51830A105 | ||
| 5325-01-576-7012 | MS51830A106 | ||
| 5325-01-303-1073 | MS51830A108 | ||
| 5325-01-284-9894 | MS51830A109 | ||
| 5325-01-284-8286 | MS51830A110 | ||
| 5325-00-110-8970 | MS51830A201 | ||
| 5325-00-939-6022 | MS51830A202 | NAS1394-4 | $1.80 2025-11 |
| 5325-00-939-6021 | MS51830A203 | NAS1394-5 | |
| 5325-01-219-7910 | MS51830A204 | ||
| 5325-00-915-8095 | MS51830A206 |
Each row is one National Stock Number and the part numbers DLA FLIS lists on it, as written there. A blank means FLIS lists no part in that series on the stock number, not that the size does not exist.
Sources and how to read this page.Details
Reference numbers the Federal Logistics Information System records against the same National Stock Number. A supply-catalog cross-reference, not an engineering-approved interchangeability: confirm against the controlling drawing or spec before substituting. Only equivalents marked cited have a manufacturer or government document, linked with each.
Source: DLA Federal Logistics Information System, via DLA PUB LOG ↗ (FLIS Data Electronic Reading Room ↗), data as of 2025-03-18 (March 2025 snapshot). Federal supply class 5325 Fastening devices. Issuer names are SpecLok's reading of the filing CAGE code; distributors are not named. Compiled 2026-10-02.
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