Cross reference · Howmet Fastening Systems · Plate self-locking nut
K1131 cross referenceESNA LHTA58, Cherry T2CH, SPS 15700E, MS21050
K1131 is a Howmet plate self-locking nut series on 4 government stock numbers. It is cross-referenced to ESNA LHTA58, Cherry T2CH, SPS 15700E, MS21050. Each one is labeled with how strong the evidence is.
- Issued by Howmet Fastening Systems
- Item Plate self-locking nut
- Stock numbers 4
- Cross-referenced series 8
Series in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
- LHTA58ESNACatalog only, needs approvalon 4 of 4 stock numbers, 4 sizes
- T2CHCherry AerospaceCatalog only, needs approvalon 3 of 4 stock numbers, 3 sizes
2 more on one stock number each: 15700E, T2CH832BC
- 15700ESPS TechnologiesCatalog only, needs approvalon 1 of 4 stock numbers
- T2CH832BCCherry AerospaceCatalog only, needs approvalon 1 of 4 stock numbers
Standards
- MS21050MSCatalog only, needs approvalon 3 of 4 stock numbers, 3 sizes
2 more on one stock number each: NAS681C, NASM21050
- NAS681CNASCatalog only, needs approvalon 1 of 4 stock numbers
- NASM21050NASCatalog only, needs approvalon 1 of 4 stock numbers
Airframer and OEM drawings
1 more on one stock number each: GN10BG
- GN10BGNorthrop GrummanCatalog only, needs approvalon 1 of 4 stock numbers
Plus 3 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).
Get quotes for K1131
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
SpecLok has no catalog family for K1131. Tooling for the cross-referenced series:
None of these series is in the SpecLok catalog yet.
Sizes by maker
| NSN | K1131 | LHTA58 | T2CH | 15700E | MS21050 | NAS681C | Last DLA price |
|---|---|---|---|---|---|---|---|
| 5310-00-616-1508 | K1131-3 | LHTA58-2860-02 | T2CH1032 | NAS681C3 | |||
| 5310-00-772-7946 | K1131-4 | LHTA58-2860-048 | T2CH428 | MS21050-4 | |||
| 5310-00-772-7948 | K1131-08 | LHTA58-2860-82 | T2CH832 | MS21050-08 | |||
| 5310-00-772-7958 | K1131-08BC | LHTA58-2860-82BC | 15700E-82BC | MS21050-08K |
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.
Reference only: the controlling drawing, its process spec and the manufacturer's installation instructions govern. How to use these answers
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