Hi-Lok, LISI
HL18-8-7
Hi-Lok pin and collar (Hi-Shear): the collar wrenching device shears off at installation.
- Head Protruding shear head
- Diameter 1/4" (-8)
- Grip .375-.4375"
- Material Alloy steel per AMS6415, AMS6349 o…
- Lead-time risk (DLA) Low
HL18-8-7
- What it is
- Hi-Lok (LISI), Protruding shear head, 1/4" (-8) diameter, max grip 0.4375" (-07 = 7/16")
- Equivalents
- BACB30FM8-7BoeingCatalog onlySame NSN 5320-01-014-6208 (government catalog). Not a maker's approval: confirm on the drawing.
- Install tooling, by who made the part
The nose follows the maker, not the stock number: check the maker on the CoC or packaging.
Reference only: the drawing and its process spec govern. How to read this
Install tool Hex key (holds the pin) and collar driver (Howmet Hi-Lok system) · Exact nose, every brand · Variable stack? Plan grips
What the government paidno usable DLA award in the 12 months to 2026-09-15; older, to 2025-05: $4.75 ea (1 award); production lead 53 days
No usable DLA award in the 12 months to 2026-09-15. Older data: $4.75 ea (1 award), 2024-05-15 to 2025-05-14.
| Award date | Qty | Each | CAGE | PN on award |
|---|---|---|---|---|
| 2025-05-14 | 20 | $4.75 | 71G41 | HL18-8-7 +1 |
| 2024-05-13 | 231 | $1.25 | 9BU84 | HL18-8-7 |
Median by year: 2025 $4.75 ea (1 award) · 2024 $1.25 ea (1 award)
- DLA lead time: production 53 days, administrative 75 days (snapshot 2026-09-16).
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.
The 12-month window is 2025-09-16 to 2026-09-15: it ends at the latest award date in the loaded files. Medians and ranges are per unit of issue; awards in different units are never mixed. An award more than 3 times above or below the median is marked "unusual award, check" and left out of the median, the range and the yearly medians; it is shown as DLA published it. The median it is judged against is the window's, or every loaded award's when the window has fewer than 3 awards; with fewer than 3 awards in total nothing is judged. Lines of one purchase order at the same date, price and CAGE count as one award. When no usable award falls in the window, the 12 months before the latest usable award are shown, labeled as older. Lead times are whole days in a three-digit field, so 999 means 999 or more, or a placeholder.
Joined through the NSN that DLA FLIS records for this part number. A part number on an award is the one cited on that award line; the same NSN can be bought under several part numbers. Awards loaded: 2023-01-03 to 2026-09-15.
Source: DLA FOIA Electronic Reading Room ↗, public FOIA releases. Files:
- 2023ContHist.zip/2023ContractHistory.txt (Contract History, snapshot 2024-06-24)
- 2024ContHist.zip/2024ContractHistory.txt (Contract History, snapshot 2025-08-07)
- contracthist2025.zip/contracthist2025.txt (Contract History, snapshot 2026-04-07)
- 2026-09-16-1038_contracthist.zip/2026-09-16-1038_contracthist.txt (Contract History, snapshot 2026-09-16)
- 2026-09-16-1038_ALTPLT.zip/2026-09-16-1038_ALTPLT.txt (ALT/PLT lead times, snapshot 2026-09-16)
- 2026-09-16-1038_OHandBO.zip/2026-09-16-1038_OHandBO_SEP2026.txt (On hand and backorder, snapshot 2026-09-16)
Compiled 2026-10-02.
| Family | Hi-Lok (LISI) |
|---|---|
| Head style | Protruding shear head (source: Hi-Shear HL18 drawing, title block) |
| Nominal diameter | 1/4" (-8) |
| Grip | max grip 0.4375" (-07 = 7/16") |
| Material | Alloy steel per AMS6415, AMS6349 or AMS6382, AMS6322; 95,000 psi shear |
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
- HL11-8-7 100° flush shear head
HL18 grip chart: 1/4" (-8)
Pin and collar · 5 steps
1/5Pin inserted
“Insert the pin into the prepared non-interference fit hole.”
Hi-Shear Hi-Lok and Hi-Lok/Hi-Tigue Installation Instructions, p.10, I.1 a ↗
Drawing traced from: a.
Source images (4): patent and government drawings
A patent drawing shows the patented design, which can differ in detail from today's catalog part. Each image says why it is tied to this family.
Required tooling, every brand
HL18-8-7 (Hi-Lok, 1/4"): 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 ↗
- HLA1008Straight Collar Automatic-Feed Driver(-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.
Sources4
- 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.8, H.2 Automatic Collar-Feeding Drivers ↗
- "The HI-LOK Automatic Feed Driver assembles HI-LOK collars (3/16 and 1/4 dia.) onto HI-LOK pins without reloading and at an assembly rate of up to 45 per minute."
- 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 -8 (1/4"): 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
Decode details
| Series | Hi-Lok pin HL18 |
|---|---|
| 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)
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.
HL18-8-7 is listed under NSN 5320-01-014-6208 PIN-RIVET
| Reference number | CAGE | FLIS reference type |
|---|---|---|
| BACB30FM8-7 | 81205 | Secondary reference |
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).
- Hi-Lok by LISI, pin and collar
- Datasheet (PDF) ↗
- Manufacturer page ↗
- Numbering: Hi-Shear HL10 drawing sheet 2 (Code) ↗
Lead-time risk from DLA data: Low (NSN 5320-01-014-6208: production lead 53 days)
High: DLA production lead time 180 days or more, or backorder above stock on hand. Medium: 90 to 179 days, or any backorder. Low: under 90 days and no backorder. DLA lead times are for DLA buys; a distributor with stock can ship sooner.
Supply signal
Supply signalfor this part number
- 4 CAGE codes with a part number recorded on NSN 5320-01-014-6208 (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.
Image credits: LISI AEROSPACE, HI-LOK™ and HI-LITE™ Fasteners product page, gallery ↗. Product images belong to their manufacturers.
Sources
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