Connexion

HI-LOK™ Pins


Description

HILok

The HI-LOK™ pin has been the industry standard for high strength, permanently installed airframe fasteners since its inception.

Consistently controlled preload, minimum size and weight, plus speed of installation are outstanding advantages of the HI-LOK™ Fastening System developed for high strength and temperature applications in today’s high performance aircraft and missiles. In exhaustive tests and in actual application, the HI-LOK™ Fastening System has met the highest standards of reliability.

Composite structures
As composite applications have specific requirements, and in order to keep HI-LOKTE™ products at the forefront of the aerospace industry, LISI Aerospace has developed a new range of products with an optimized recess and new coating options.
HI-LOK™ pin with ASTER™ recess for composite applications
Features

The HI-LOK™ Fastening System:

  • is basically a threaded fastener which combines the best features of a rivet and a bolt. It consists of two parts, a threaded pin and a collar
  • is rapidly and quietly installed by one person from one side using standard power tools or hand tools with less worker fatigue than with either regular rivets or bolts.
  • easily adapts itself to large scale production in a variety of pin and collar material combinations for high strength and high temperature performance.

High interference fit
Looking for high interference fit installation pins? Visit our PULL-IN™ and PULL-STEM™ page.
PULL-IN™ and PULL-STEM™ pins for high interference fit

A bolt and nut system is heavier than the HI-LOK™ Fastening System. Minimum weight results from elimination of the wrenching surfaces on a bolt and nut system. Wrenching clearances are minimized and great weight savings result from the design of more compact structural joints.

Bolt and nut systems require calibrated torque wrenches and torque inspection. The HI-LOK™ Fastening System eliminates these concerns.

Product Selection

The HI-LOK™ technology is availble on inch (HL), M metric (HLM) and MJ metric series (HLMJ) pins.

HI-LOK™ pins also come in a variety of head styles to accomodate all shear, tension or mixed application. Protruding heads only require a straight hole. 100° heads provide better aerodynamic surface, while 130° heads offer, in addition, an increased bearing surface for soft material applications. Self-aligning heads are designed for weight saving and optimized performances when installed on sloped surfaces.

Shear
Protruding shear Protruding
100° flush shear100° flush crown shear 100° flush
100° flush crown
Shear/Tension
100° MS20426 flush100° MS20426 flush crown 100° MS20426 flush
100° MS20426 flush crown
Tension
Protruding tension Protruding
100° MS24694 flush100° MS24694 crown 100° MS24694 flush
100° MS24694 flush crown

One sided pin installation started with the HI-LOK™ System, combining the benefits of a rivet and bolt-nut system to provide a major improvement for the airframe industry. The HI-LOK™ Pin was the first of its kind, and all similar systems in the airframe industry are based on the HI-LOK™ Fastening System.

Licensed Manufacturers

In order to provide the best quality for our produtcs, HI-LOK™ pins are only manufactured by licensed suppliers. Supplier list can be found here:

Configurator
Materialhead_styleThread_x0020_TypeShear_x0020_Strength_x0020__x002Tensile_x0020_Strength_x0020__x0nominal_size_shank_x0031_st_oversize_shank_x0032_nd_oversize_shank_x0033_rd_oversize_shankIs_x0020_Custom
6Al-4V TitaniumProtruding ShearUNJ16095HL10HL110HL410 False
6Al-4V Titanium100° flush ShearUNJ16095HL11HL111HL411 False
6Al-4V TitaniumProtruding TensionUNJ16095HL12HL112HL412 False
6Al-4V Titanium100° MS24694 flush TensionUNJ16095HL13HL113HL413 False
Alloy SteelProtruding ShearUNJ16095HL18HL62HL218HL202False
Alloy Steel100° flush ShearUNJ16095HL19HL63HL219HL203False
Alloy SteelProtruding TensionUNJ16095HL20HL64HL220HL204False
Alloy Steel100° MS24694 flush TensionUNJ16095HL21HL65HL221HL205False
7075-T6 AluminumProtruding ShearUNJ  HL22HL122HL258 True
7075-T6 Aluminum100° MS20426 flush ShearUNJ  HL23HL123HL259 True
7075-T6 Aluminum100° MS24694 flush TensionUNJ  HL29HL129  True
431 Stainless SteelProtruding ShearUNJ220125HL30HL66HL58 True
431 Stainless Steel100° flush ShearUNJ220125HL31HL67HL59 True
431 Stainless SteelProtruding TensionUNJ220125HL32HL36HL136 True
431 Stainless Steel100° MS24694 flush TensionUNJ220125HL33HL37HL137 True
A-286Protruding ShearUNJ16095HL40HL140HL240HL702False
A-286100° flush ShearUNJ16095HL41HL141HL241HL1203False
300 series Stainless Steel100° flush ShearUNJ  HL43   True
A-286Protruding TensionUNJ16095HL48HL248HL748HL706False
A-286100° MS24694 flush TensionUNJ16095HL49HL249HL749HL1205False
431 Stainless SteelProtruding ShearUNJ220125HL54HL52HL458 True
431 Stainless Steel100° flush ShearUNJ220125HL61HL53HL459 True
431 Stainless Steel100° MS20426 flush ShearUNJ220125HL109   True
6Al-4V TitaniumSelf-aligning TensionUNJ16095HL128   True
PH15-7MO Stainless SteelProtruding ShearUNJ220125HL150   True
PH15-7MO Stainless Steel100° flush ShearUNJ220125HL151   True
PH15-7MO Stainless SteelProtruding TensionUNJ220125HL152   True
PH15-7MO Stainless Steel100° MS24694 flush TensionUNJ220125HL153   True
MP35NProtruding ShearUNJ260132HL156   True
MP35N100° flush ShearUNJ260132HL157   True
MP35NProtruding TensionUNJ260132HL158HL1158HL1258 True
MP35N100° MS24694 flush TensionUNJ260132HL159HL1159HL1259 True
Alloy Steel100° flush crown ShearUNJ16095HL200   True
WASPALOY®Protruding TensionUNJ16095HL244   True
PH13-8MO Stainless SteelProtruding ShearUNJ220125HL330   True
431 Stainless Steel100° flush crown ShearUNJ220125HL369   True
A-286Protruding ShearUNJ16095HL440HL442HL240HL702True
A-286100° flush ShearUNJ16095HL441HL443HL241HL1203True
A-286100° MS20426 flush ShearUNJ16095HL445HL447HL257 True
A-286Protruding TensionUNJ16095HL448HL452HL454HL706True
A-286100° MS24694 flush TensionUNJ16095HL449HL453HL455 True
6Al-4V TitaniumProtruding ShearUNJ16095HL510   True
6Al-4V Titanium100° flush ShearUNJ16095HL511   True
6Al-4V TitaniumProtruding TensionUNJ16095HL512   True
6Al-4V Titanium100° MS24694 flush TensionUNJ16095HL513   True
6Al-4V Titanium100° MS20426 flush ShearUNJ16095HL523HL537HL823 True
Alloy Steel100° MS20426 flush ShearUNJ16095HL525HL527HL255HL207True
PH13-8MO Stainless SteelProtruding ShearUNJ220125HL644HL744HL844 False
PH13-8MO Stainless Steel100° flush ShearUNJ220125HL645HL751HL851 False
PH13-8MO Stainless SteelProtruding TensionUNJ220125HL646HL746HL846 False
PH13-8MO Stainless Steel100° MS24694 flush TensionUNJ220125HL647HL753HL853 False
INCONEL® 718100° flush ShearUNJ180108HL657   True
INCONEL® 718Protruding ShearUNJ180108HL658   True
INCONEL® 718100° MS24694 flush TensionUNJ180108HL661   True
INCONEL® 718100° flush ShearUNJ220125HL701HL937HL947 False
Alloy SteelProtruding TensionUNJ180108HL720HL764HL820 True
Alloy Steel100° MS24694 flush TensionUNJ180108HL721HL765HL821 True
INCONEL® 718Protruding TensionUNJ210125HL730HL938HL948 False
INCONEL® 718100° MS24694 flush TensionUNJ210125HL731HL939HL949 False
INCONEL® 718Protruding ShearUNJ220125HL754HL936HL946 False
6Al-4V TitaniumProtruding TensionUNJ16095HL756HL856  True
MP35NProtruding TensionUNJ260135HL1034   True
Alloy SteelProtruding TensionUNJ16095HL1050HL1052HL1054HL1056True
Alloy Steel100° MS24694 flush TensionUNJ16095HL1051HL1053HL1057HL1059True
A-286100° MS24694 flush TensionUNJ16095HL1061HL1063HL1065HL1067True
6AL-4V TitaniumProtruding ShearM16095HLM10HLM310HLM610 True
6AL-4V Titanium100° flush ShearM16095HLM11HLM311HLM611 True
6AL-4V TitaniumProtruding TensionM16095HLM12HLM312HLM612 True
6AL-4V Titanium100° flush TensionM16095HLM13HLM313HLM613 True
Alloy SteelProtruding ShearM16095HLM18   True
Alloy Steel100° flush ShearM16095HLM19   True
Alloy SteelProtruding TensionM16095HLM20HLM320HLM620 True
Alloy Steel100° flush TensionM16095HLM21HLM321HLM621 True
INCONEL® 718Protruding TensionM180108HLM32   True
PH13-8MO Stainless SteelProtruding ShearM220125HLM34   True
PH13-8MO Stainless Steel100° flush ShearM220125HLM35HLM335  True
PH13-8MO Stainless SteelProtruding TensionM220125HLM36HLM336HLM636 True
PH13-8MO Stainless Steel100° flush TensionM220125HLM37HLM337HLM637 True
A-286Protruding ShearM16095HLM40   True
A-286100° flush ShearM16095HLM41HLM341HLM641 True
A-286Protruding TensionM16095HLM48HLM348  True
A-286100° flush TensionM16095HLM49   True
6AL-6V-2Sn TitaniumProtruding ShearM180108HLM910HLM902HLM906 True
6AL-6V-2Sn Titanium100° flush ShearM180108HLM911HLM903HLM907 True
6AL-6V-2Sn TitaniumProtruding TensionM180108HLM912HLM904HLM908 True
6AL-6V-2Sn Titanium100° flush TensionM180108HLM913HLM905HLM909 True

Any additionnal inquiries?Contact R&D Contact
(Missing drawings / CAD files)
Regular Drawings
Custom Drawings
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HI-LOK and HL are trademarks of Hi-Shear Corporation.
INCONEL is a registered trademark of Special Metals Corporation.
WASPALOY is a registered trademark of United Technologies Corporation.