Hi-Lok^® Fastening System (HL)

The Industry Standard for High Strength, Permanently Installed Airframe Fasteners...

Hi-Lok^® (HL) Links on this page:

[General Threaded Fastener Info]  [Hi-Lok (HL) fastening system info]  [Standard Hi-Lok Pin Selection Guide]  [Links to Hi-Lok Collar Standards]  [Links to Metric Hi-Lok Standards]  [Links to Mechanical-Locking Hi-Lok Standards][Complete Listing: Hi-Lok Pins]  [Complete Listing: Hi-Lok Collars]  

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Standard Configuration Hi-Lok® Pins*
Selection Guide
Minimum Shear Strength**	Material	Suggested Maximum Temperature (subject to finish)**	Head Style		Nominal size shank	1/64" oversize shank	1/32" oversize shank
95 Ksi	6Al-4V  Titanium	750º F	Protruding Shear		HL 10	HL 110	HL 410
			100º Reduced Flush Shear		HL 11	HL 111	HL 411
			Protruding Tension		HL 12   HL 1012	HL 112 HL 1022	HL 412 HL 1032
			100º Flush MS24694 Tension		HL 13   HL 1013	HL 113 HL 1023	HL 413 HL 1033
95 Ksi	Alloy Steel	450ºF	Protruding Shear		HL 18	HL 62	HL 218
			100º Reduced Flush Shear		HL 19	HL 63	HL 219
			Protruding Tension		HL 20	HL 64	HL 220
			100º Flush MS24694 Tension		HL 21	HL 65	HL 221
95 Ksi	A-286  Hi- Temperature  Alloy	1200ºF	Protruding Shear		HL 40	HL 140	HL 240
			100º Reduced Flush Shear		HL 41	HL 141	HL 241
			Protruding Tension		HL 48	HL 248	HL 748
			100º Flush MS24694 Tension		HL 49	HL 249	HL 749
45Ksi	7075 - T6 Aluminum	250ºF	Protruding Shear		HL 22	HL 122	HL 258
			100º Flush MS20426 Shear		HL 23	HL 123	HL 259
125 Ksi	PH13-8Mo	600ºF	Protruding Shear		HL 644	HL 744	HL 844
			100º Reduced Flush Shear		HL 645	HL 751	HL 845
			Protruding Tension		HL 646	HL 746	HL 846
			100º Flush MS24694 Tension		HL 647	HL 753	HL 847
125 Ksi	Inconel 718	1200ºF	Protruding Shear		HL 754	HL 936	HL 946
			100º Reduced Flush Shear		HL 701	HL 937	HL947
			Protruding Tension		HL 730
			100º Flush MS24694 Tension		HL 731	HL 939	HL 949
* Refer to standards pages for recommended mating collars
** Shear strength at room temperature

Hi-Lok Pins are manufactured to the requirements of Hi-Shear Specification 342.  Installation guidelines are contained in the Hi-Lok Installation Manual.

Other Hi-Lok (HL) Pins:

HL 860

Hi-Lok (HL) Collars:

Standard and Forged Collar Selection Guide:

Collar Configuration	Application	Materials	For use with Nominal Size Shank HL Pins	For use with 1/64" Oversize Shank HL Pins*	For use with 1/32" Oversize Shank HL Pins*
Basic:	Shear	2024 Al.	HL70	HL79	HL84
		Stainless Steel	HL94 HL1094**	HL94 HL1094**	HL294
		A-286 CRES	HL97	HL1097**	HL197
		Titanium	HL379	HL379	HL491
	Tension	Stainless Steel	HL86	HL87 HL1087** HL1087A**	HL93
		A-286 CRES	HL78	HL278	HL478
		Titanium	HL198	HL198
		17-4PH CRES	HL73	HL273	HL373
Self-Aligning: for use on 7° max sloped surface	Shear	2024 Al.	HL82	HL82	HL382
		Stainless Steel	HL175	HL175
		A-286 CRES	HL185 HL297	HL185 HL297
	Tension	Stainless Steel	HL75	HL75	HL375
		A-286 CRES	HL275	HL275
		Titanium	HL280	HL280
		17-4PH CRES	HL89	HL89	HL289
Self-sealing:	Shear	2024 Al.	HL374 HL384 HL384A	HL374 HL384 HL384A

Notes: * Oversize collars may be used with lower size shank pins.

           ** indicates forged-type collar configuration.

Hi-Lok collars are manufactured to the requirements of Hi-Shear Specification 345.

 

All Posted Hi-Lok Collars:

HL70	HL73	HL75	HL77	HL78	HL79	HL82	HL83	HL84	HL86
HL86FN	HL87	HL89	HL93	HL94	HL95	HL97	HL175	HL182	HL185
HL197	HL198	HL273	HL275	HL278	HL280	HL289	HL294	HL297	HL373
HL374	HL375	HL379	HL382	HL384	HL384A	HL478	HL491	HL570	HL582
HL584	HL585	HL586	HL587	HL593	HL1087	HL1087A	HL1094	HL1097

Hi-Lok (HL) Mechanical Lock Pins:

HL 227	HL 233	HL 252
HL 349	HL 358

Hi-Lok (HL) Mechanical Lock Collars:

HL 584

HL 585

 

Metric Hi-Lok (HLM) Pins:

HLM10	HLM11	HLM12	HLM13
HLM20	HLM21	HLM29	HLM41
HLM310	HLM311	HLM341	HLM411
HLM419

 

Metric Hi-Lok  (HLM) Collars:

HLM70	HLM73	HLM75	HLM78
HLM80	HLM82	HLM86	HLM94
HLM175	HLM370	HLM394

    

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