HL19-5-16 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 1.000" (-16 = 16/16")
Material	Alloy steel

Decoded from the published numbering scheme; not a claim that this exact dash number is a stocked SKU, and not a certified design authority. Always verify against the controlling drawing, spec, and your stress group.

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

HL10-5-16 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:

HL19-6-16 HL19-8-16 HL19-10-16 HL19-12-16

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.

Install tooling

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

Hi-Lok tool tables

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)

not listed under this PN

HL19-5-16 is not listed in FLIS under this exact part number (FLIS data as of 2025-03-18, March 2025 snapshot). FLIS may record it with a material or finish code, or under the standard part number.

Source: DLA PUB LOG ↗. Search any part number in the decoder.

Cross-reference HL19-5-16

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

Lead-time risk for this family (SpecLok sourcing assessment): Low

Supply signal

not in FLIS by this PN; no SpecLok quotes yet

Supply signalfor this part number

Not listed in FLIS under this exact part number (March 2025 snapshot).
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 2026-09-28.