Spring Clecos: K, KL and KHD Sizes and Grip Ranges

Specification

Item	Value
Type	Spring temporary fastener (cleco)
Material	Steel body, spring loaded (K-type). Special callouts: AL aluminum body, BO black oxide.
Maker	Zephyr Tool Group, Kwik-Lok brand
Operated by	Pliers
Maximum clamping force	25 lb (K-type and KK-type)

Dimensions by size

Dimension, in	K	KK	KL	KEL	KHD
G — Grip range, in (mm)	0 to 1/4 (0 to 6.35)	0 to 1/4 (0 to 6.35)	1/4 to 1/2 (6.35 to 12.7)	1/2 to 3/4 (12.7 to 19.05)	0 to 1/2 (0 to 12.7)
D — Diameters listed, in	1/16 to 1/4	3/32 to 3/16	3/32 to 3/16	3/32 to 3/16	3/32 to 1/4

G and D as lettered on the maker's drawing. Inches are the maker's figures and are official; millimetres in brackets are converted (inches × 25.4) and are not official.

Part numbers

Every part number in the maker's table. Cross reference is the equivalent number the maker prints for each one.

1/16 in (1.59 mm)1 part number

Part no.	Series	Cross reference	Color code	Grip, in (mm)	Drill
K-1/16	K	M-1/16	black	0 to 1/4 (0 to 6.35)	1/16 in

3/32 in (2.38 mm)5 part numbers

Part no.	Series	Cross reference	Color code	Grip, in (mm)	Drill
K-3/32	K	M-3/32	zinc	0 to 1/4 (0 to 6.35)	#40
KK-3/32	KK	MM-3/32	zinc	0 to 1/4 (0 to 6.35)	#40
KL-3/32	KL	ML-3/32	zinc	1/4 to 1/2 (6.35 to 12.7)	#40
KEL-3/32	KEL	MEL-3/32	zinc	1/2 to 3/4 (12.7 to 19.05)	#40
KHD-3/32	KHD	MHD-3/32	zinc	0 to 1/2 (0 to 12.7)	#40

1/8 in (3.18 mm)5 part numbers

Part no.	Series	Cross reference	Color code	Grip, in (mm)	Drill
K-1/8	K	M-1/8	copper	0 to 1/4 (0 to 6.35)	#30
KK-1/8	KK	MM-1/8	copper	0 to 1/4 (0 to 6.35)	#30
KL-1/8	KL	ML-1/8	copper	1/4 to 1/2 (6.35 to 12.7)	#30
KEL-1/8	KEL	MEL-1/8	copper	1/2 to 3/4 (12.7 to 19.05)	#30
KHD-1/8	KHD	MHD-1/8	copper	0 to 1/2 (0 to 12.7)	#30

5/32 in (3.97 mm)5 part numbers

Part no.	Series	Cross reference	Color code	Grip, in (mm)	Drill
K-5/32	K	M-5/32	black	0 to 1/4 (0 to 6.35)	#20
KK-5/32	KK	MM-5/32	black	0 to 1/4 (0 to 6.35)	#20
KL-5/32	KL	ML-5/32	black	1/4 to 1/2 (6.35 to 12.7)	#20
KEL-5/32	KEL	MEL-5/32	black	1/2 to 3/4 (12.7 to 19.05)	#20
KHD-5/32	KHD	MHD-5/32	black	0 to 1/2 (0 to 12.7)	#20

3/16 in (4.76 mm)5 part numbers

Part no.	Series	Cross reference	Color code	Grip, in (mm)	Drill
K-3/16	K	M-3/16	brass	0 to 1/4 (0 to 6.35)	#10
KK-3/16	KK	MM-3/16	brass	0 to 1/4 (0 to 6.35)	#10
KL-3/16	KL	ML-3/16	brass	1/4 to 1/2 (6.35 to 12.7)	#10
KEL-3/16	KEL	MEL-3/16	brass	1/2 to 3/4 (12.7 to 19.05)	#10
KHD-3/16	KHD	MHD-3/16	brass	0 to 1/2 (0 to 12.7)	#10

7/32 in (5.56 mm)2 part numbers

Part no.	Series	Cross reference	Color code	Grip, in (mm)	Drill
K-7/32	K	M-7/32	zinc	0 to 1/4 (0 to 6.35)	7/32 in
KHD-7/32	KHD	MHD-7/32	zinc	0 to 1/2 (0 to 12.7)	7/32 in

1/4 in (6.35 mm)2 part numbers

Part no.	Series	Cross reference	Color code	Grip, in (mm)	Drill
K-1/4	K	M-1/4	copper	0 to 1/4 (0 to 6.35)	1/4 in
KHD-1/4	KHD	MHD-1/4	copper	0 to 1/2 (0 to 12.7)	1/4 in

Notes from the maker

K is the standard clamp: pliers-actuated, spring loaded, steel bodied, effective for most space requirements.
KK is a miniature clamp with a shorter body, for spaces that prohibit the K-type.
KL and KEL are K-type clamps with an extended grip range. KHD is for heavier applications that need a grip range the K to KL series do not offer.
Reading a number: K, then L, EL or HD for the grip series, then the hole size, then any special callout. Callouts: AL = aluminum body, BO = black oxide.
Side grips and Handi-Klamps are on the Kwik-Lok KSG sheet; kits are on the Kwik-Lok ZKLS sheet.
The catalog listings linked to this sheet (a CL100K kit and a K-series cleco) do not name the maker. They are the same type, not confirmed Kwik-Lok parts, and the figures here apply only to the part numbers on this sheet.

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Sources

Zephyr Tool Group, Kwik-Lok Temporary Fasteners & Installation Tools Catalog, 07/16 — Plier-operated fasteners, pp. I-2 and I-3: series, part numbers, cross references, color codes, grip, diameter and drill size.
Zephyr Tool Group, K-1/8 product page, archived copy of 19 May 2026 — Maximum clamping force of the K-type. The page is no longer on the maker's live site.
Zephyr Tool Group, KK-1/8 product page, archived copy of 19 May 2026 — Maximum clamping force of the KK-type. The page is no longer on the maker's live site.