Static joint Strength of LGPL18-V/LGPL2SC-V Titanium Flush head Lockbolt Fasteners in machined countersinks Aluminum Alloy Sheet and Plate. Data taken from
MIL-HDBK5 Tables 8.1.4.2(I)

(Note: Data shown under part number LGPL2SC -V.  LGPL18SC-V is a close tolerance head version of the same product)

Fastener	LGPL18SC-V (a)Pin with 3SCL-C Collars
Sheet Material	Test Results in 2024-T3 Aluminum Sheet & Plate (b)
Dia.	3/16	1/4	5/16	3/8
Sheet Thickness	Ultimate Strength (Pounds)
.050	836	- - -	- - -	- - -
.063	1180	1350	- - -	- - -
.070	1395	1630	1775	- - -
.080	1640	1950	2155	2270
.090	1900 d	2300	2595	2800
.100	2115 d	2650	3035	3335
.125	2340	3530 d	4140	4640
.160	2655	4000	5645 d	6500
.190	2694	4355	6085	8080 d
.250	- - -	4660	6965	9180
.312	- - -	- - -	7290	10270
.375	- - -	- - -	- - -	10490
Shear Strength (c)	2694	4660	7290	10490
	Yield Strength (Pounds)
.050	733	- - -	- - -	- - -
.063	901	1220	- - -	- - -
.070	1005	1360	1745	- - -
.080	1125	1515	1930	2270
.090	1250	1685	2140	2635
.100	1380	1855	2355	2895
.125	1640	2280	2895	3530
.160	1910	2795	3640	4430
.190	2140	3100	4230	5200
.250	- - -	3700	4985	6440
.312	- - -	- - -	5760	7375
.375	- - -	- - -	- - -	8325
Fastener Head Height	.048	.063	.070	.081

(1) (a) Fasteners aluminum coated per NAS4006.
(2) (b) Test specimen hole size from .0005" interference to .0005" clearance.
(3) (c) Fastener shear strength based on area computed from shank nominal diameter.
(4) (d) Yield load is less than 2/3 of indicated ultimate strength.
(5) Ultimate values above double line are knife-edge condition and the use of fasteners in this condition is undesirable.
(6) Permanent set at yield load; 4% of nominal diameter.