HL19-5-3 decoded
Family	Hi-Lok (LISI)
Head style	100° flush shear head (source: Hi-Shear HL11 / HL19 drawing title blocks, title blocks)
Nominal diameter	5/32" (-5)
Grip	max grip 0.1875" (-03 = 3/16")
Material	Alloy steel

Decoded from the published numbering scheme; not a claim that this exact dash number is a stocked SKU.

Reference only: the controlling drawing, its process spec and the manufacturer's installation instructions govern. How to use these answers

Series and strength (datasheet)

HL10 / HL18 protruding shear head · HL11 / HL19 100° flush shear head · typical collars HL70, HL79, HL82, HL94, HL97

HL10: 6Al-4V titanium, 95,000 psi shear minimum; HL18: alloy steel, 95,000 psi shear (160,000-180,000 psi tensile): Hi-Shear drawings (Hi-Lok Product Specification 342).

Datasheet (PDF) ↗

Other head styles, same diameter and grip

HL10-5-3 protruding shear head

HL19 grip chart: 5/32" (-5)

15 grips

Every catalogued max-grip dash number at this diameter. Stack thickness must fall inside the fastener's grip range: see the design calculators.

HL19-5-2 HL19-5-3 HL19-5-4 HL19-5-5 HL19-5-6 HL19-5-7 HL19-5-8 HL19-5-9 HL19-5-10 HL19-5-11 HL19-5-12 HL19-5-13 HL19-5-14 HL19-5-15 HL19-5-16

Other diameters at this grip:

HL19-6-3 HL19-8-3 HL19-10-3 HL19-12-3

Elevation of a pin.US 2,940,495, Lock nut with frangible driving portion (Wing, Hi-Shear Rivet Tool Co.), Fig. 1 ↗ · US patent drawingWhy this family: Later patents (e.g. US 5,305,666) state the basic Hi-Lok fastener is disclosed in US 2,940,495, G. S. Wing, assigned to Hi-Shear Rivet Tool Co., 1960.

Elevation of a collar. — Elevation of a pin.US 2,940,495, Lock nut with frangible driving portion (Wing, Hi-Shear Rivet Tool Co.), Fig. 1 ↗ · US patent drawingWhy this family: Later patents (e.g. US 5,305,666) state the basic Hi-Lok fastener is disclosed in US 2,940,495, G. S. Wing, assigned to Hi-Shear Rivet Tool Co., 1960.

Required tooling, every brand

Tool catalogs, cited

HL19-5-3 (Hi-Lok, 5/32"): the process document lists these tools for this size.

Hi-Lok adaptor toolsStandard power or hand tools with Hi-Lok adaptor toolsHi-Shear Hi-Lok and Hi-Lok/Hi-Tigue Installation Instructions p.7 ↗
HLA1051Straight Driver(-5, -6, -8, -10)Hi-Shear Hi-Lok and Hi-Lok/Hi-Tigue Installation Instructions p.8 ↗
HLA200820° Offset Ratchet Wrench Driver(-5, -6, -8)Hi-Shear Hi-Lok and Hi-Lok/Hi-Tigue Installation Instructions p.8 ↗
HLH311Hand Tool AssemblyHi-Shear Hi-Lok and Hi-Lok/Hi-Tigue Installation Instructions p.9 ↗

No per-size tool and nose table is on file for this family: see Sources.

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Hi-Lok tool tables

Sources3

Hi-Shear Hi-Lok and Hi-Lok/Hi-Tigue Installation Instructions, p.7, H. Tooling ↗
- "Hi-Lok adaptors tools are fitted to high speed, pistol grip and ratchet wrench drivers in straight, 90°, offset, extension and automatic collar-feed configurations. Refer to Hi-Shear Corporation's Hi-Lok/Hi-Tigue Tool Catalog for a complete description of a wide variety of Hi-Lok drivers and accessories."
Hi-Shear Hi-Lok and Hi-Lok/Hi-Tigue Installation Instructions, p.8, H.1 Standard Power Drivers ↗
- "installs Hi-Lok Fasteners in 5/32, 3/16, 1/4 and 5/16 inch sizes. Extended and offset adaptors are also available."
- "installs Hi-Lok Fasteners in 5/32, 3/16 and 1/4 inch sizes. Extended sockets are available. Larger drivers will install larger size Hi-Loks."
Hi-Shear Hi-Lok and Hi-Lok/Hi-Tigue Installation Instructions, p.9, H.3 Hand Tools ↗
- "The Hi-Lok fastener may be installed with hand tools, Allen hex keys and open-end or ratchet type wrenches."

Not documented

The Hi-Lok process document names tools for this size but prints no per-size tool and nose (adaptor) table; the maker's tool catalog it points to is not on file.

Diameter -5 (5/32"): decoded from the part number.

Tool catalogs are the manufacturers' as published in the cited edition; confirm current PNs with the tool maker before purchase. Install per the OEM process specification.

Install tooling

Install tooling: Hex key (holds the pin) and collar driver (Howmet Hi-Lok system)

Hi-Lok tool tables · Open in the tooling finder

Decode details

Decode details
Series	Hi-Lok pin HL19
Decode confidence	high
Numbering source	Hi-Shear HL10 drawing sheet 2 (Code)

"First dash number indicates nominal diameter in 1/32nds. Second dash number indicates maximum grip in 1/16ths." (HL10 sheet 2)
No finish-code letters present.
Head and material from the drawing title block.
Collars are separate part numbers (HL10 lists typical collars HL70, HL79, HL82, HL94, HL97).

Government reference cross-reference (DLA FLIS)

1 NSN

Government reference cross-reference (DLA FLIS)

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.

HL19-5-3 is listed under NSN 5320-00-759-3366 PIN-RIVET

No other reference number is recorded against this NSN.

Source: DLA Federal Logistics Information System, via DLA PUB LOG ↗ (FLIS Data Electronic Reading Room ↗). FLIS data as of 2025-03-18 (March 2025 snapshot).

Cross-reference HL19-5-3

Hi-Lok by LISI, pin and collar
Datasheet (PDF) ↗
Manufacturer page ↗
Numbering: Hi-Shear HL10 drawing sheet 2 (Code) ↗

Family-level estimate, not specific to HL19-5-3: Low (SpecLok sourcing assessment; no DLA lead time or stock on file for this part number)

Supply signal

3 CAGE codes in FLIS; last DoD award (item class) 2026-06-25; no SpecLok quotes yet

Supply signalfor this part number

3 CAGE codes with a part number recorded on NSN 5320-00-759-3366 (FLIS, March 2025).
Last DoD award for PIN-RIVET items (FSC 5320): 2026-06-25; 2,535 awards since 2025-10-01.
No SpecLok quotes yet.

A signal from records SpecLok holds, not availability, stock or a lead-time promise. FLIS lists who has recorded a part number for the item, not who makes it today. DoD awards carry no NSN or part number, so award activity is for the item name's class.

Sources: DLA FLIS Data Electronic Reading Room (PUB LOG) ↗, DLA PUB LOG ↗, USAspending.gov award search API ↗; DoD award data 2025-10-01 to 2026-07-06; compiled 2026-10-02.