Cross reference · ESNA · Plate self-locking nut
RM52LHTA51A cross referenceMS21047L
RM52LHTA51A is a ESNA plate self-locking nut series on 5 government stock numbers. Its closest equivalents are MS21047L. Each one is labeled with how strong the evidence is.
- Issued by ESNA
- Item Plate self-locking nut
- Stock numbers 5
- Equivalents 17
- DLA paid $0.48 to $1.21
Equivalents in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
9 more on one stock number each: H1S832NL, K1000, R2000A, R2000A08K, R2000A3K, R2000A4K, T2S1032BC, T2S428BC, T2S832BC
- H1S832NLCherry AerospaceCatalog only, needs approvalon 1 of 5 stock numbers
- K1000Howmet Fastening SystemsCatalog only, needs approvalon 1 of 5 stock numbers
- R2000AHowmet Fastening SystemsCatalog only, needs approvalon 1 of 5 stock numbers
- R2000A08KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 5 stock numbers
- R2000A3KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 5 stock numbers
- R2000A4KHowmet Fastening SystemsCatalog only, needs approvalon 1 of 5 stock numbers
- T2S1032BCCherry AerospaceCatalog only, needs approvalon 1 of 5 stock numbers
- T2S428BCCherry AerospaceCatalog only, needs approvalon 1 of 5 stock numbers
- T2S832BCCherry AerospaceCatalog only, needs approvalon 1 of 5 stock numbers
Standards
- MS21047LMSCatalog only, needs approvalon 2 of 5 stock numbers, 2 sizes
6 more on one stock number each: MS21047L08K, MS21047L3K, MS21047L4K, NAS680A4K, NASM21047L08K, NASM25027
- MS21047L08KMSCatalog only, needs approvalon 1 of 5 stock numbers
- MS21047L3KMSCatalog only, needs approvalon 1 of 5 stock numbers
- MS21047L4KMSCatalog only, needs approvalon 1 of 5 stock numbers
- NAS680A4KNASCatalog only, needs approvalon 1 of 5 stock numbers
- NASM21047L08KNASCatalog only, needs approvalon 1 of 5 stock numbers
- NASM25027NASCatalog only, needs approvalon 1 of 5 stock numbers
Airframer and OEM drawings
1 more on one stock number each: Z00N
- Z00NDaherCatalog only, needs approvalon 1 of 5 stock numbers
Plus 5 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).
Get quotes for RM52LHTA51A
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
SpecLok has no catalog family for RM52LHTA51A. Tooling for the equivalents:
- Self-locking nutplates (MS21047, MS21059, MS21069, MS21078; rivetless ForceTec) tooling for MS21047L, MS21047L08K, MS21047L3K, MS21047L4K
What the government paid
DLA awards on 3 of 5 stock numbers, 3 awards from 2024-05-16 to 2026-08-13.
Latest award per stock number: $0.48 to $1.21 each.
DLA production lead time: 65 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 | RM52LHTA51A | H1S832NL | K1000 | MS21047L | NAS680A4K | Z00N | Last DLA price |
|---|---|---|---|---|---|---|---|
| 5310-00-764-7283 | RM52LHTA51A-048 | MS21047L4 | $1.21 2026-08 | ||||
| 5310-00-764-7281 | RM52LHTA51A-82 | H1S832NL | MS21047L08 | Z00.N5421375175 | |||
| 5310-00-779-7101 | RM52LHTA51A-02BC | K1000-3BC | $0.48 2024-05 | ||||
| 5310-00-779-7124 | RM52LHTA51A-048BC | NAS680A4K | $1.21 2025-03 | ||||
| 5310-00-779-7069 | RM52LHTA51A-82BC |
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 5310 Nuts and washers. Issuer names are SpecLok's reading of the filing CAGE code; distributors are not named. Compiled 2026-10-02.
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