HI-LOK COLLARS

HI-LITE Pins
HI-LITE Collars
HI-TIGUE Pins
HI-LOK Pins
HI-LOK Collars
HI-TIGUE Collars
Boeing Part Numbers
Lockheed Martin Part Numbers
Bombardier Part Numbers

Hi-Lok Collars

Hi-Lok Fasteners

Hi-Lok Collars

AIAP offers a full range of Hi-Lok collars designed to pair with Hi-Lok pins for optimal torque-controlled installation. These collars ensure a secure, lightweight fastening solution that meets the rigorous demands of aerospace manufacturing and maintenance. We stock collars across HL standards as well as OEM-specific specifications.

Key Features of Hi-Lok Collars
  • Self-locking design – Eliminates the need for lock wire or additional locking devices.
  • One-time installation – Swages or shears at the torque groove once proper preload is achieved.
  • Lightweight material options – Available in aluminum, titanium, or stainless steel for optimal strength-to-weight balance.
  • Predictable torque control – Provides consistent clamp-up, preventing over- or under-tightening.
  • Vibration resistance – Maintains secure retention in demanding, high-vibration environments.
Click Here to Contact AIAP for Hi-Lok Collars
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Part #MaterialTypePin Shank Diameter
HL1087431 Stainless SteelBasicNominal,1/64 Oversize
HL1094431 Stainless SteelBasicNominal,1/64 Oversize
HL175431 Stainless SteelSelf-aligningNominal
HL185431 Stainless SteelSelf-aligningNominal
HL198TitaniumBasicNominal,1/64 Oversize
HL273431 Stainless SteelBasicNominal,1/64 Oversize
HL278431 Stainless SteelBasic1/64 Oversize
HL289431 Stainless SteelSelf-aligning1/32 Oversize
HL373431 Stainless SteelBasic1/32 Oversize
HL3747075-T6 Aluminum AlloySelf-sealingNominal,1/64 Oversize
HL375431 Stainless SteelSelf-aligning1/32 Oversize
HL3796AL-4V TitaniumBasicNominal,1/64 Oversize
HL478431 Stainless SteelBasic1/32 Oversize
HL707075-T6 Aluminum AlloyBasicNominal
HL73431 Stainless SteelBasicNominal
HL75431 Stainless SteelSelf-aligningNominal
HL777075-T6 Aluminum AlloyBasicNominal
HL78431 Stainless SteelBasicNominal
HL797075-T6 Aluminum AlloyBasicNominal,1/64 Oversize
HL827075-T6 Aluminum AlloySelf-aligningNominal
HL847075-T6 Aluminum AlloyBasic1/32 Oversize
HL86431 Stainless SteelBasicNominal
HL87431 Stainless SteelBasic1/64 Oversize
HL89431 Stainless SteelSelf-aligningNominal
HL93431 Stainless SteelBasic1/32 Oversize
HL94431 Stainless SteelBasicNominal,1/64 Oversize
HL97431 Stainless SteelBasicNominal