Cross reference · Space-Lok · Quick release pin
SLS4B cross referenceHartwell LG4SB, MS17984
SLS4B is a Space-Lok quick release pin series on 19 government stock numbers. Its closest equivalents are Hartwell LG4SB, MS17984. Each one is labeled with how strong the evidence is.
- Issued by Space-Lok
- Item Quick release pin
- Stock numbers 19
- Equivalents 22
- DLA paid $7.24 to $29.66
Equivalents in the government catalog
Catalog-only listings need engineering approval before you substitute.
Manufacturers
- LG4SBHartwellCatalog only, needs approvalon 18 of 19 stock numbers, 18 sizes
- LG4CBHartwellCatalog only, needs approvalon 10 of 19 stock numbers, 10 sizes
10 more on one stock number each: BLC4B03S, BLC4B03SF, BLC4B03SM, BLC4B04S, BLC4B04SM, BLC4B11S, BLC4B11SM, BLC4B12S, BLC4B12SM, BLC4B16S
- BLC4B03SAvibankCatalog only, needs approvalon 1 of 19 stock numbers
- BLC4B03SFAvibankCatalog only, needs approvalon 1 of 19 stock numbers
- BLC4B03SMAvibankCatalog only, needs approvalon 1 of 19 stock numbers
- BLC4B04SAvibankCatalog only, needs approvalon 1 of 19 stock numbers
- BLC4B04SMAvibankCatalog only, needs approvalon 1 of 19 stock numbers
- BLC4B11SAvibankCatalog only, needs approvalon 1 of 19 stock numbers
- BLC4B11SMAvibankCatalog only, needs approvalon 1 of 19 stock numbers
- BLC4B12SAvibankCatalog only, needs approvalon 1 of 19 stock numbers
- BLC4B12SMAvibankCatalog only, needs approvalon 1 of 19 stock numbers
- BLC4B16SAvibankCatalog only, needs approvalon 1 of 19 stock numbers
Standards
- MS17984MSCatalog only, needs approvalon 17 of 19 stock numbers, 17 sizes
- MS17984CMSCatalog only, needs approvalon 11 of 19 stock numbers, 11 sizes
4 more on one stock number each: NAS1334C3C03D, NAS1334C3C20D, NAS1334S3S24D, NAS1354S7S
- NAS1334C3C03DNASCatalog only, needs approvalon 1 of 19 stock numbers
- NAS1334C3C20DNASCatalog only, needs approvalon 1 of 19 stock numbers
- NAS1334S3S24DNASCatalog only, needs approvalon 1 of 19 stock numbers
- NAS1354S7SNASCatalog only, needs approvalon 1 of 19 stock numbers
Airframer and OEM drawings
4 more on one stock number each: 5192174ITEM, BACP18AM4B15H, BACP18AM4B24H, BACP18AM4B34H
- 5192174ITEMUS NavyCatalog only, needs approvalon 1 of 19 stock numbers
- BACP18AM4B15HBoeingCatalog only, needs approvalon 1 of 19 stock numbers
- BACP18AM4B24HBoeingCatalog only, needs approvalon 1 of 19 stock numbers
- BACP18AM4B34HBoeingCatalog only, needs approvalon 1 of 19 stock numbers
Plus 7 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).
Get quotes for SLS4B
Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.
Install tooling
SpecLok has no catalog family for SLS4B. Tooling for the equivalents:
None of the equivalents is in the SpecLok catalog yet.
What the government paid
DLA awards on 7 of 19 stock numbers, 294 awards from 2023-02-21 to 2026-09-09.
Latest award per stock number: $7.24 to $29.66 each.
DLA production lead time: 118 to 232 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 | SLS4B | LG4SB | MS17984 | Last DLA price |
|---|---|---|---|---|
| 5315-00-962-4476 | SLS4B03 | LG4SB0300 | MS17984-403 | |
| 5315-00-880-5131 | SLS4B04 | LG4SB0400 | MS17984-404 | |
| 5315-00-904-5225 | SLS4B05 | LG4SB0500 | MS17984-405 | |
| 5315-00-904-5221 | SLS4B07 | LG4SB0700 | MS17984-407 | |
| 5315-00-453-6274 | SLS4B11 | LG4SB1100 | $17.95 2025-05 | |
| 5315-00-723-2463 | SLS4B12 | LG4SB1200 | MS17984-412 | $7.24 2026-03 |
| 5315-00-904-5210 | SLS4B15 | |||
| 5315-00-904-1672 | SLS4B16 | LG4SB1600 | MS17984-416 | $8.68 2026-05 |
| 5315-00-904-5227 | SLS4B17 | LG4SB1700 | MS17984-417 | |
| 5315-00-494-8525 | SLS4B19 | LG4SB1900 | MS17984-419 | |
| 5315-00-904-1671 | SLS4B20 | LG4SB2000 | MS17984-420 | $17.36 2026-08 |
| 5315-00-904-1670 | SLS4B21 | LG4SB2100 | MS17984-421 | $20.65 2026-05 |
| 5315-00-482-9702 | SLS4B23 | LG4SB2300 | MS17984-423 | |
| 5315-01-053-7105 | SLS4B24 | LG4SB2400 | MS17984-424 | |
| 5315-00-052-7056 | SLS4B25 | LG4SB2500 | MS17984-425 | $16.80 2026-09 |
Show 4 more sizes
| NSN | SLS4B | LG4SB | MS17984 | Last DLA price |
|---|---|---|---|---|
| 5315-00-904-5233 | SLS4B26 | LG4SB2600 | MS17984-426 | |
| 5315-00-883-9360 | SLS4B34 | LG4SB3400 | MS17984-434 | $29.66 2026-02 |
| 5315-01-075-6284 | SLS4B61 | LG4SB6100 | MS17984-461 | |
| 5315-01-076-9556 | SLS4B66 | LG4SB6600 | MS17984-466 |
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 5315 Nails, machine keys and pins. Issuer names are SpecLok's reading of the filing CAGE code; distributors are not named. Compiled 2026-10-02.
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