Cross reference · Hi-Shear (LISI Aerospace) · Pin-rivet

HL551 cross referenceBoeing 3M249A

HL551 is a Hi-Shear pin-rivet series on 60 government stock numbers. Its closest equivalents are Boeing 3M249A. Each one is labeled with how strong the evidence is.

Equivalents in the government catalog

60 stock numbers

Catalog-only listings need engineering approval before you substitute.

Manufacturers

  • AICL249ASPS TechnologiesCatalog only, needs approvalon 5 of 60 stock numbers, 5 sizes
  • AICL249A12CSPS TechnologiesCatalog only, needs approvalon 3 of 60 stock numbers, 3 sizes
  • AICL249A6CSPS TechnologiesCatalog only, needs approvalon 2 of 60 stock numbers, 2 sizes
  • AICL249A8CSPS TechnologiesCatalog only, needs approvalon 2 of 60 stock numbers
2 more on one stock number each: HL5551, AICL249A12CC
  • HL5551SPS TechnologiesCatalog only, needs approvalon 1 of 60 stock numbers
  • AICL249A12CCSPS TechnologiesCatalog only, needs approvalon 1 of 60 stock numbers

Airframer and OEM drawings

  • 3M249ABoeingCatalog only, needs approvalon 55 of 60 stock numbers, 54 sizes
  • BACB30FNBoeingCatalog only, needs approvalon 4 of 60 stock numbers, 4 sizes
  • HS5605BoeingCatalog only, needs approvalon 3 of 60 stock numbers, 3 sizes
  • GB510BNorthrop GrummanCatalog only, needs approvalon 2 of 60 stock numbers, 2 sizes

Plus 3 reference numbers whose issuer SpecLok does not identify (distributors and catalog agencies are not named).

Get quotes for HL551

Cited equivalents go on the request as acceptable alternates. Catalog-only listings do not.

Install tooling

Hi-Lok tooling (hex key (holds the pin) and collar driver (howmet hi-lok system))

Hi-Lok in the catalog

What the government paid

DLA awards on 3 of 60 stock numbers, 4 awards from 2023-11-01 to 2026-06-09.

Latest award per stock number: $0.35 to $2.62 each.

DLA production lead time: 72 to 327 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

60 stock numbers
Part numbers DLA FLIS lists for HL551 and its equivalents, by stock number
NSNHL5513M249ALast DLA price
5320-00-192-0640HL551-5-33M249A08-3
5320-00-279-9516HL551-5-10
5320-01-045-2524HL551-5-11
5320-00-088-2279HL551-5-143M249A08-14
5320-01-012-5590HL551-6-23M249A3-2
5320-00-836-3984HL551-6-43M249A3-4
5320-00-731-8178HL551-6-53M249A3-5
5320-00-969-4520HL551-6-63M249A3-6$0.35 2026-06
5320-00-753-7459HL551-6-73M249A3-7
5320-00-728-8477HL551-6-83M249A3-8
5320-00-765-3910HL551-6-93M249A3-9
5320-00-907-7701HL551-6-103M249A3-10
5320-00-907-7700HL551-6-113M249A3-11
5320-00-907-7702HL551-6-123M249A3-12
5320-00-907-7711HL551-6-133M249A3-13
Show 45 more sizes
More sizes
NSNHL5513M249ALast DLA price
5320-00-536-7992HL551-6-143M249A3-14
5315-00-626-7327HL551-8-23M249A4-2
5320-00-626-7356HL551-8-43M249A4-4
5320-00-839-2163HL551-8-63M249A4-6
5320-00-959-7291HL551-8-63M249A4-6$0.90 2023-11
5320-00-765-4059HL551-8-73M249A4-7
5320-00-839-2162HL551-8-83M249A4-8
5320-00-080-1592HL551-8-93M249A4-9
5325-01-490-5202HL551-8-10
5320-00-101-5513HL551-8-113M249A4-11
5320-00-728-8481HL551-8-123M249A4-12
5320-00-839-2165HL551-8-133M249A4-13
5320-00-906-7042HL551-8-143M249A4-14$2.62 2025-09
5320-01-014-4349HL551-8-193M249A4-19
5320-00-839-2167HL551-10-73M249A5-7
5320-00-279-9561HL551-10-93M249A5-9
5320-00-753-7389HL551-10-103M249A5-10
5320-00-855-1427HL551-10-113M249A5-11
5320-00-279-9576HL551-10-133M249A5-13
5320-00-855-1426HL551-10-143M249A5-14
5320-00-839-2166HL551-10-153M249A5-15
5320-00-283-4782HL551-10-163M249A5-16
5320-00-283-4798HL551-10-183M249A5-28
5320-00-284-2105HL551-10-193M249A5-19
5320-00-284-2109HL551-10-203M249A5-20
5320-00-283-4792HL551-10-243M249A5-24
5320-00-283-4793HL551-10-253M249A5-25
5320-00-284-2116HL551-10-263M249A5-26
5320-00-283-4795HL551-10-273M249A5-27
5320-00-284-2127HL551-10-293M249A5-29
5320-00-284-2129HL551-10-303M249A5-30
5320-00-284-2131HL551-10-313M249A5-31
5320-00-399-1107HL551-10-33
5320-00-284-2134HL551-10-343M249A5-34
5320-01-127-9422HL551-12-123M249A6-12
5320-00-855-1423HL551-12-173M249A6-17
5320-00-317-0788HL551-12-18
5320-00-292-6023HL551-12-193M249A6-19
5320-00-286-0668HL551-12-203M249A6-20
5320-00-286-0670HL551-12-223M249A6-22
5320-01-026-0973HL551-12-243M249A6-24
5320-01-026-0974HL551-12-253M249A6-25
5320-00-283-7648HL551-12-263M249A6-26
5320-00-283-7649HL551-12-273M249A6-27
5320-00-283-7650HL551-12-283M249A6-28

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 classes 5315 Nails, machine keys and pins, 5320 Rivets, 5325 Fastening devices. Issuer names are SpecLok's reading of the filing CAGE code; distributors are not named. Compiled 2026-10-02.

Next · 3 Quote

Quote HL551 or an equivalent

Get quotes adds the part and its install tooling to your quote. Check another part number in the cross reference.

Open your quote →Look up a specific size →All cross references →