HL18 at a glance

Specification

Item	Value
Type	Hi-Lok pin, protruding shear head
Material	Alloy steel
Strength	95,000 psi shear min.; 160,000-180,000 psi tensile
Status	Check the current issue before design use.

Dimension, in	8-32UNJC-3A Modified	10-32-UNJF-3A Modified	1/4-28UNJF-3A Modified
Nominal diameter	5/32	3/16	1/4
A — Head diameter (max / min)	.262 – .242	.315 – .295	.412 – .387
B — Ref. (see drawing)	.312	.325	.395
D — Shank diameter (max / min)	.1635 – .1625	.1895 – .1885	.2495 – .2485
TD — Threaded-end diameter (max / min)	.1595 – .1570	.1840 – .1810	.2440 – .2410
G — G, ref.	.020	.025	.030
H — H (max / min, see drawing)	.047 – .037	.055 – .045	.069 – .059
Thread	8-32UNJC-3A Modified	10-32-UNJF-3A Modified	1/4-28UNJF-3A Modified
Double shear, lb min	4,010	5,380	9,300
Tension, lb min	1,940	2,500	4,300

Dimensions as tabulated in the catalogue, by first dash number (nominal diameter). Max – min where a tolerance is shown.

Every part number, grouped by nominal diameter; the number after the second dash is the max grip in 1/16 in.

5/3215 part numbers

3/1615 part numbers

1/415 part numbers

Part	Meaning
Format	HL18PB<dash>
Example	HL18PB5-2 — 5/32 nominal diameter, max grip 1/8 in

Approved data governs. Use the pin the drawing, SRM or IPC calls for.
Grip: the number after the second dash is the max grip in 1/16 in (dash -2 = 1/8 in, -3 = 3/16 in, and so on). Maximum-minimum values are shown as max – min.
Collars listed for this pin in the catalogue quick-reference chart: HL70, HL79, HL82, HL94.

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HL18 — Hi-Lok Pin, Protruding Shear Head, Alloy Steel — nominal sizes and part numbers.