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.

Nuts and collars
Learn more about mating nuts and collars:
HI-LOK™ collars range
STARLITE™ STR10 titanium nuts for improved performances and weight saving on tension application

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 weigth saving and optimized performances when installed on sloped surfaces.

Shear
	Protruding
	100° flush 100° flush crown
	130° flush 130° flush crown
Shear/Tension
	100° MS20426 flush 100° MS20426 flush crown
Tension
	Protruding
	100° MS24694 flush 100° MS24694 flush crown
	Self-aligning

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.

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.

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:

HI-LOK™ pins licensed manufacturers

Configurator

Material	head_style	Thread_x0020_Type	Shear_x0020_Strength_x0020__x002	Tensile_x0020_Strength_x0020__x0	nominal_size_shank	_x0031_st_oversize_shank	_x0032_nd_oversize_shank	_x0033_rd_oversize_shank	Is_x0020_Custom
6Al-4V Titanium	Protruding Shear	UNJ	160	95	HL10	HL110	HL410		False
6Al-4V Titanium	100° flush Shear	UNJ	160	95	HL11	HL111	HL411		False
6Al-4V Titanium	Protruding Tension	UNJ	160	95	HL12	HL112	HL412		False
6Al-4V Titanium	100° MS24694 flush Tension	UNJ	160	95	HL13	HL113	HL413		False
Alloy Steel	Protruding Shear	UNJ	160	95	HL18	HL62	HL218	HL202	False
Alloy Steel	100° flush Shear	UNJ	160	95	HL19	HL63	HL219	HL203	False
Alloy Steel	Protruding Tension	UNJ	160	95	HL20	HL64	HL220	HL204	False
Alloy Steel	100° MS24694 flush Tension	UNJ	160	95	HL21	HL65	HL221	HL205	False
7075-T6 Aluminum	Protruding Shear	UNJ			HL22	HL122	HL258		True
7075-T6 Aluminum	100° MS20426 flush Shear	UNJ			HL23	HL123	HL259		True
7075-T6 Aluminum	100° MS24694 flush Tension	UNJ			HL29	HL129			True
431 Stainless Steel	Protruding Shear	UNJ	220	125	HL30	HL66	HL58		True
431 Stainless Steel	100° flush Shear	UNJ	220	125	HL31	HL67	HL59		True
431 Stainless Steel	Protruding Tension	UNJ	220	125	HL32	HL36	HL136		True
431 Stainless Steel	100° MS24694 flush Tension	UNJ	220	125	HL33	HL37	HL137		True
A-286	Protruding Shear	UNJ	160	95	HL40	HL140	HL240	HL702	False
A-286	100° flush Shear	UNJ	160	95	HL41	HL141	HL241	HL1203	False
300 series Stainless Steel	100° flush Shear	UNJ			HL43				True
A-286	Protruding Tension	UNJ	160	95	HL48	HL248	HL748	HL706	False
A-286	100° MS24694 flush Tension	UNJ	160	95	HL49	HL249	HL749	HL1205	False
431 Stainless Steel	Protruding Shear	UNJ	220	125	HL54	HL52	HL458		True
431 Stainless Steel	100° flush Shear	UNJ	220	125	HL61	HL53	HL459		True
431 Stainless Steel	100° MS20426 flush Shear	UNJ	220	125	HL109				True
6Al-4V Titanium	Self-aligning Tension	UNJ	160	95	HL128				True
PH15-7MO Stainless Steel	Protruding Shear	UNJ	220	125	HL150				True
PH15-7MO Stainless Steel	100° flush Shear	UNJ	220	125	HL151				True
PH15-7MO Stainless Steel	Protruding Tension	UNJ	220	125	HL152				True
PH15-7MO Stainless Steel	100° MS24694 flush Tension	UNJ	220	125	HL153				True
MP35N	Protruding Shear	UNJ	260	132	HL156				True
MP35N	100° flush Shear	UNJ	260	132	HL157				True
MP35N	Protruding Tension	UNJ	260	132	HL158	HL1158	HL1258		True
MP35N	100° MS24694 flush Tension	UNJ	260	132	HL159	HL1159	HL1259		True
Alloy Steel	100° flush crown Shear	UNJ	160	95	HL200				True
WASPALOY®	Protruding Tension	UNJ	160	95	HL244				True
PH13-8MO Stainless Steel	Protruding Shear	UNJ	220	125	HL330				True
431 Stainless Steel	100° flush crown Shear	UNJ	220	125	HL369				True
A-286	Protruding Shear	UNJ	160	95	HL440	HL442	HL240	HL702	True
A-286	100° flush Shear	UNJ	160	95	HL441	HL443	HL241	HL1203	True
A-286	100° MS20426 flush Shear	UNJ	160	95	HL445	HL447	HL257		True
A-286	Protruding Tension	UNJ	160	95	HL448	HL452	HL454	HL706	True
A-286	100° MS24694 flush Tension	UNJ	160	95	HL449	HL453	HL455		True
6Al-4V Titanium	Protruding Shear	UNJ	160	95	HL510				True
6Al-4V Titanium	100° flush Shear	UNJ	160	95	HL511				True
6Al-4V Titanium	Protruding Tension	UNJ	160	95	HL512				True
6Al-4V Titanium	100° MS24694 flush Tension	UNJ	160	95	HL513				True
6Al-4V Titanium	100° MS20426 flush Shear	UNJ	160	95	HL523	HL537	HL823		True
Alloy Steel	100° MS20426 flush Shear	UNJ	160	95	HL525	HL527	HL255	HL207	True
PH13-8MO Stainless Steel	Protruding Shear	UNJ	220	125	HL644	HL744	HL844		False
PH13-8MO Stainless Steel	100° flush Shear	UNJ	220	125	HL645	HL751	HL851		False
PH13-8MO Stainless Steel	Protruding Tension	UNJ	220	125	HL646	HL746	HL846		False
PH13-8MO Stainless Steel	100° MS24694 flush Tension	UNJ	220	125	HL647	HL753	HL853		False
INCONEL® 718	100° flush Shear	UNJ	180	108	HL657				True
INCONEL® 718	Protruding Shear	UNJ	180	108	HL658				True
INCONEL® 718	100° MS24694 flush Tension	UNJ	180	108	HL661				True
INCONEL® 718	100° flush Shear	UNJ	220	125	HL701	HL937	HL947		False
Alloy Steel	Protruding Tension	UNJ	180	108	HL720	HL764	HL820		True
Alloy Steel	100° MS24694 flush Tension	UNJ	180	108	HL721	HL765	HL821		True
INCONEL® 718	Protruding Tension	UNJ	210	125	HL730	HL938	HL948		False
INCONEL® 718	100° MS24694 flush Tension	UNJ	210	125	HL731	HL939	HL949		False
INCONEL® 718	Protruding Shear	UNJ	220	125	HL754	HL936	HL946		False
6Al-4V Titanium	Protruding Tension	UNJ	160	95	HL756	HL856			True
MP35N	Protruding Tension	UNJ	260	135	HL1034				True
Alloy Steel	Protruding Tension	UNJ	160	95	HL1050	HL1052	HL1054	HL1056	True
Alloy Steel	100° MS24694 flush Tension	UNJ	160	95	HL1051	HL1053	HL1057	HL1059	True
A-286	100° MS24694 flush Tension	UNJ	160	95	HL1061	HL1063	HL1065	HL1067	True
6AL-4V Titanium	Protruding Shear	M	160	95	HLM10	HLM310	HLM610		True
6AL-4V Titanium	100° flush Shear	M	160	95	HLM11	HLM311	HLM611		True
6AL-4V Titanium	Protruding Tension	M	160	95	HLM12	HLM312	HLM612		True
6AL-4V Titanium	100° flush Tension	M	160	95	HLM13	HLM313	HLM613		True
Alloy Steel	Protruding Shear	M	160	95	HLM18				True
Alloy Steel	100° flush Shear	M	160	95	HLM19				True
Alloy Steel	Protruding Tension	M	160	95	HLM20	HLM320	HLM620		True
Alloy Steel	100° flush Tension	M	160	95	HLM21	HLM321	HLM621		True
INCONEL® 718	Protruding Tension	M	180	108	HLM32				True
PH13-8MO Stainless Steel	Protruding Shear	M	220	125	HLM34				True
PH13-8MO Stainless Steel	100° flush Shear	M	220	125	HLM35	HLM335			True
PH13-8MO Stainless Steel	Protruding Tension	M	220	125	HLM36	HLM336	HLM636		True
PH13-8MO Stainless Steel	100° flush Tension	M	220	125	HLM37	HLM337	HLM637		True
A-286	Protruding Shear	M	160	95	HLM40				True
A-286	100° flush Shear	M	160	95	HLM41	HLM341	HLM641		True
A-286	Protruding Tension	M	160	95	HLM48	HLM348			True
A-286	100° flush Tension	M	160	95	HLM49				True
6AL-6V-2Sn Titanium	Protruding Shear	M	180	108	HLM910	HLM902	HLM906		True
6AL-6V-2Sn Titanium	100° flush Shear	M	180	108	HLM911	HLM903	HLM907		True
6AL-6V-2Sn Titanium	Protruding Tension	M	180	108	HLM912	HLM904	HLM908		True
6AL-6V-2Sn Titanium	100° flush Tension	M	180	108	HLM913	HLM905	HLM909		True

Any additionnal inquiries? Contact

R&D Contact

(Missing drawings / CAD files)

Regular Drawings

Custom Drawings

HST1072_XXX_HST1076_XXX_HST1084_XXX_HST1087_XXX_HST1094_XXX_HST1096_XXX_HST1275_XXX_HST1384_XXX_HST1385_XXX_HST1479_XXX_HST1487_XXX_HST1488_XXX_HST185_XXX_HST71_XXX_HST73_XXX_HST74_XXX_HST75_XXX_HST771_XXX_HST78_XXX_HST79_XXX_HST82_XXX_HST97_XXX_HST645_XXX_HST647_XXX_HST13_XXX_HST48_XXX_HST646_XXX_HST49_XXX_HST12_XXX_HST59_XXX_HST18_XXX_HST21_XXX_HST536_XXX_HST20_XXX_HST54_XXX_HST52_XXX_HST19_XXX_HST40_XXX_HST57_XXX_HST41_XXX_HST10_XXX_HST11_XXX_HST644_XXX_HL175_XXX_HL185_XXX_HL198_XXX_HL275_XXX_HL280_XXX_HL379_XXX_HL70_XXX_HL73_XXX_HL75_XXX_HL78_XXX_HL82_XXX_HL86_XXX_HL89_XXX_HL94_XXX_HL97_XXX_HL19_XXX_HL40_XXX_HL18_XXX_HL13_XXX_HL12_XXX_HL21_XXX_HL11_XXX_HL20_XXX_HL10_XXX_HL49_XXX_HL48_XXX_HL41_XXX_HST1072_XXX_HST1076_XXX_HST1084_XXX_HST1087_XXX_HST1094_XXX_HST1096_XXX_HST1275_XXX_HST1384_XXX_HST1385_XXX_HST1479_XXX_HST1487_XXX_HST1488_XXX_HST185_XXX_HST71_XXX_HST73_XXX_HST74_XXX_HST75_XXX_HST771_XXX_HST78_XXX_HST79_XXX_HST82_XXX_HST97_XXX_HST645_XXX_HST647_XXX_HST13_XXX_HST48_XXX_HST646_XXX_HST49_XXX_HST12_XXX_HST59_XXX_HST18_XXX_HST21_XXX_HST536_XXX_HST20_XXX_HST54_XXX_HST52_XXX_HST19_XXX_HST40_XXX_HST57_XXX_HST41_XXX_HST10_XXX_HST11_XXX_HST644_XXX_HL175_XXX_HL185_XXX_HL198_XXX_HL275_XXX_HL280_XXX_HL379_XXX_HL70_XXX_HL73_XXX_HL75_XXX_HL78_XXX_HL82_XXX_HL86_XXX_HL89_XXX_HL94_XXX_HL97_XXX_HL19_XXX_HL40_XXX_HL18_XXX_HL13_XXX_HL12_XXX_HL21_XXX_HL11_XXX_HL20_XXX_HL10_XXX_HL49_XXX_HL48_XXX_HL41_XXX_