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HST78

Hi-Lite Collars

Hi-Lite HST78 – A-286 High Temperature Alloy – 1/16 Grip Variation, Tension Application – For Use on Standard and 1/64″ Oversize Hi-Lite ST Pins

current revision available for download at  LISI Aerospace

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hst-78

DASH
NO.
PIN
NOM
DIA
   THREAD      A
DIA
A1
DIA
(REF)
B
DIA
L L1
(REF)
L2
(REF)
L3
(REF)
P
(REF)
W
HEX
X
(REF)
X1
(REF)
UTS
LBS.
MIN
TORQUE-OFF
INCH­
POUNDS
5 5/32 8-32UNJC-3B .287
.283
.324 .173
.169
.395
.375
.220 .235 .400 .344 .314
.302
.085 .100 2.300 30-40
6 3/18 10-32UNJF-3B .307
.303
.357 .212
.208
.406
.385
.230 .245 .410 .344 .314
.302
.085 .100 2.750 40-50
8 1/4 1/4-28UNJF-3B .412
.408
.457 .272
.268
.475
.455
.270 .285 .480 .484 .440
.425
.090 .105 5.000 110-130
10 5/18 5/16-24UNJF-3B .518
.512
.573 .336
.330
.555
.535
.315 .330 .545 .624 .565
.560
.095 .110 8,300 200-250
12 3/8 3/6-24UNJF-3B .620
.614
.683 .398
.392
.625
.605
.355 .370 .630 .715 .628
.613
.095 .110 12.700 360-420
14 7/18 7/16-20UNJF-3B .733
.727
.777 .463
.457
.705
.685
.405 .420 .710 .840 .753
.738
.100 .115 19,000 525-600
16 1/2 1/2-20UNJF-3B .848
.842
.897 .528
.522
.765
.745
.435 .450 .770 .970 .878
.861
.100 .115 25,500 72S-625
18 9/18
37/64
9/16-180UNJF-3B .915
.905
.910 .598
.592
.875
.855
.520 .535 .890 1.045 .941
.924
.105 .120 29.000 1000-1150
20 5/8
41/64
5/8-180UNJF-3B .995
.985
1.040 .661
.655
.960
.940
.575 .590 .975 1.120 1.003
.986
.105 .120 32.000 1350-1550
24 3/4
49/64
3/4-180UNJF-3B 1.120
1.110
1.140 .786
.780
1.185
1.165
.755 .770 1.205 1.240 1.128
1.110
.120 .135 42.000 1900-2200
28 7/8
57/64
7/8-140UNJF-3B 1.345
1.335
1.365 .911
.905
1.400
1.380
.895 .910 1.420 1.520 1.380
1.356
.125 .140 82.000 3200-3800
32 1
65/64
1-120UNJF-3B 1.490
1.480
1.510 1.036
1.030
1.635
1.615
1.030 1.045 1.655 1.650 1.504
1.480
.130 .145 84.000 4500-5000

NOTES:
1. Go thread gaga penetration shell be 3/4 of one revolution minimum after thread lock.
2. Dimensions apply after finish.
3. Use HST378 for oversize replacement.

MATERIAL:

Collar – A-286 high temperature alloy per AMS5731.
Washer – 300 series stainless steel.

FINISH:
Collar – HST78-() = Silver plate per AMS2410. and cetyl aIcohoI lube per Hi-Shear Spec. 305.
HST78DK( ) = Solid film lube per Kalgard FA.
HST78DU() = Solid film lube per AS5272, Type I.
HST78GU( ) = Silver plate per AMS2410.
HST78KG() = Cadmium plate per AM5-QQ-P418, Type II, class 2, color green, and cetyl aIcohoI lube per Hi-Shear Spec. 305.
HST78MA() = Solid film lube per Kalgard RA.
HST78P() =Cadmium plate per AMS-QQ-P416, Type I, class 2, and cetyI alcohol lube per Hi-Sheer Spec. 305.
HST78PB() = Cadmium plate per AM5-QQ-P418, Type II, class 2, and cetyI alcohol lube per Hi-Sheer Spec. 305.
HST78TB() = Hi-Kota 2 solid film lube per Hi-Shear Spec. 292, and cetyI alcohol lube per Hi-Sheer Spec. 305.
HST78TP() = Hi-Kota 2 solid film lube per Hi-Shear Spec, 292, color orange on body of collar, and cetyI alcohol per Hi-Sheer Spec. 305.
HST78V() = Solid film lube per “Lubeco” 2123, Type II.

Collar & Washer  –  HST78GUW() = Collar finish same as HST78GU( ). Washer is passivated per Hi-Shear Spec. 258 .
HST78PBW() = Collar finish same as HST78PB( ). Washer is passivated per Hi-Shear Spec. 258.
HST78PW( ) =  Collar finish same as HST78P().  Washer is passivated Hi-Shear Spec. 258.
HST78TBW() =  Collar finish same as HST78TB( ).  Washer is passivated Hi-Shear Spec. 258.
HST78WV() = Collar finish same as HST78V().  Washer is solid film lube per “Lubeco” 2123.
HST78W( ) = Collar finish same as HST78-().  Washer Is passivated per Hi-Shear Spec. 258.
HST78DUWK() =Collar finish same as HST78DU( ). Washer is with Hi-Kota 1 (minimum .0002 thickness) and optional cetyl alcohol lubrication.
HST78DUWU() = Collar finish same as HST78DU().  Washer Is passivated per Hi-sheer Spec. 258.

SPECIFICATION:
Hi-Lite Product Specification 381.

CODE:
Dash number indicates nominal thread size in 1/32nds. See Finish note for explanation of other code letters.

EXAMPLES:  
HST78PB8 = 1/4-28 Hi-Lite ST collar, finish is cadmium plate per AM5-QQ-P-416, Type II, class 2, and cetyl alcohol lube per Hi-Shear Spec. 305.
HST78PBW8 =Assembly of HST78TB8 collar and HST78W8 washer.

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