Cross reference · Boeing · Turnlock fastener receptacle
HS4430 cross referenceLISI 1127707A, RTX 373MR21P, BAE FS1077, Northrop GR521A
HS4430 is a Boeing turnlock fastener receptacle series on 3 government stock numbers. Its closest equivalents are LISI 1127707A, RTX 373MR21P, BAE FS1077, Northrop GR521A. Each one is labeled with how strong the evidence is.
- Issued by Boeing
- Item Turnlock fastener receptacle
- Stock numbers 3
- Equivalents 8
- DLA paid $5.15 to $44.00
Equivalents in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
1 more on one stock number each: 1127707A
- 1127707ALISI AerospaceCatalog only, needs approvalon 1 of 3 stock numbers
Airframer and OEM drawings
7 more on one stock number each: 373MR21P, 373MS021P, FS1077, GR521A, GR521A12A, GR521A12D, NTA12806
- 373MR21PRTXCatalog only, needs approvalon 1 of 3 stock numbers
- 373MS021PRTXCatalog only, needs approvalon 1 of 3 stock numbers
- FS1077BAE SystemsCatalog only, needs approvalon 1 of 3 stock numbers
- GR521ANorthrop GrummanCatalog only, needs approvalon 1 of 3 stock numbers
- GR521A12ANorthrop GrummanCatalog only, needs approvalon 1 of 3 stock numbers
- GR521A12DNorthrop GrummanCatalog only, needs approvalon 1 of 3 stock numbers
- NTA12806LeonardoCatalog only, needs approvalon 1 of 3 stock numbers
Plus 29 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).
Get quotes for HS4430
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
SpecLok has no catalog family for HS4430. Tooling for the equivalents:
None of the equivalents is in the SpecLok catalog yet.
What the government paid
DLA awards on 3 of 3 stock numbers, 23 awards from 2023-05-15 to 2026-08-18.
Latest award per stock number: $5.15 to $44.00 each.
DLA production lead time: 320 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 | HS4430 | 1127707A | 373MR21P | FS1077 | GR521A | NTA12806 | Last DLA price |
|---|---|---|---|---|---|---|---|
| 5325-00-505-4798 | HS4430-1 | FS1077 | GR521A12 | NTA12806-212-12 | $5.15 2026-06 | ||
| 5325-00-641-0531 | HS4430-2 | $5.59 2025-02 | |||||
| 5325-00-559-0334 | HS4430-8 | 1127707A | 373MR21P2 | $44.00 2026-08 |
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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