Hi-Lok tooling, gauges and removal
LISI · Lockbolt / pin-collar · Family page · Shop verification card
By diameter
| Dia. | Tool | Other access | Gauges |
|---|---|---|---|
| -5 | Not in the published table for this size | None published | None published |
| -6 | Not in the published table for this size | None published | None published |
| -8 | Not in the published table for this size | None published | None published |
| -10 | Not in the published table for this size | None published | None published |
| -12 | Not in the published table for this size | None published | None published |
Tools, heads, adapters and gaugesCited tables
Installation tools
Hi-Lok adaptor tools
Standard power or hand tools with Hi-Lok adaptor tools
pneumatic
"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 2-1573."
Accessorys
HLH128 / HLK10
Hi-Lok collar removal hand tools; Hi-Lok/Hi-Tigue Collar Removal Tool Kit
Removal tooling (see Removal).
Tooling source notes
- T.O. 1-1A-8 §1.10.5: "Hi-Lok fasteners are visually inspected. No inspection tools or torque wrenches are required."Government document, not interview: USAF T.O. 1-1A-8.
- Repair access is the edge case that bites: you can't strip the surrounding structure during a repair, and some jobs need 90° drills and heads. Know the tool envelope during design.Installer interview (aerospace tool services), 2026-09-25. Field experience, not a specification.
Removal (drill-out)Published procedure
USAF T.O. 1-1A-8 §1.10.6, Removal of Installed Fastener (Hi-Lok)
- “In non-interference fit holes, Hi-Loks can be removed with common hand tools in a manner similar to removing a nut from a bolt. Use an Allen hex wrench to prevent the pin from rotating while the collar is being unscrewed with pliers. If not damaged during collar removal, the Hi-Lok pin can be reused.” USAF T.O. 1-1A-8, p.1-157, §1.10.6 a ↗
- “To more easily remove Hi-Lok collars from pins installed in interference fit holes and in limited access areas, the HLH128 series of hand tools are available in individual sizes or in sets as in the HLK10 Hi-Lok/Hi-Tigue Collar Removal Tool Kit. The Hi-Lok pin can be reused.” USAF T.O. 1-1A-8, p.1-159, §1.10.6 b to d ↗
- “In interference fit holes, ALUMINUM Hi-Lok/Hi-Tigue collars can be removed with an HLC1 Hi-Lok Collar Removal Tool fitted to a 3/8 square socket drive and companion air motor. The tool is pressed firmly over the Hi-Lok Collar and rotated until the tool teeth bite sufficiently into the collar material to grip and unscrew the collar from the pin.” USAF T.O. 1-1A-8, p.1-159, §1.10.6 b to d ↗
- “Collar removal drivers. Designed for production use to remove Hi-Lok collars from pins, pistol grip power drivers with cutter-type nosepieces are available. The Hi-Lok pin can be reused.” USAF T.O. 1-1A-8, p.1-159, §1.10.6 b to d ↗
Cautions
- “NOTE: Initial loosening of the -8 and larger Hi-Lok collars with HLH128 Removal Tool is recommended.” USAF T.O. 1-1A-8, p.1-159, §1.10.6 b to d ↗
None of the removal procedures on file gives a composite-specific removal caution. The Monogram specs address composite at the hole instead: holes "reasonably round and free from burrs (metallic structure) and delamination (graphite/epoxy type structure)" (MBF2003 §5.1).
Tool tables are the manufacturer's as published in the cited revision; confirm current tool PNs with the manufacturer or distributor before purchase. Not a certified process authority: install and remove per the OEM process specification.
Next · Step 4: Order
Put the tooling on the RFQ
The RFQ package adds these tools and gauges for the diameters on your lines, so the supplier quotes them with the fasteners.