HL51 at a glance

Specification

Item	Value
Type	Hi-Lok pin, 100° reduced flush shear head, 3/32 grip variation
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	10-32UNJF-3A Modified
Nominal diameter	5/32	3/16
A — Head diameter (max / min)	.2612 – .2564	.3036 – .2966
B — Ref. (see drawing)	.342	.355
D — Shank diameter (max / min)	.1635 – .1625	.1895 – .1885
TD — Threaded-end diameter (max / min)	.1595 – .1570	.1840 – .1810
H — H (max / min, see drawing)	.0410 – .0390	.0470 – .0450
Thread	8-32UNJC-3A Modified	10-32UNJF-3A Modified
Double shear, lb min	4,010	5,380
Tension, lb min	1,290	2,000

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.

5/328 part numbers

3/168 part numbers

Part	Meaning
Format	HL51-<dash>
Example	HL51-5-2 — 5/32 nominal diameter, max grip 1/8 in

Catalogue heading: 3/32 grip variation.
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: HL83, HL90.

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HL51 — Hi-Lok Pin, 100° Reduced Flush Shear Head, Alloy Steel, 3/32 Grip Variation — nominal sizes and part numbers.