STAPLES
9040 / 440K Series 18 Gauge Staples
Catalog product reference. See the dimensions below to identify this series.
18 ga · 16–38 mm
Industrial staples for assembly and finishing work. Match the series, crown width and wire cross-section to your stapler before choosing a leg length.
Crown width
6.0 mm / 0.24 in (nominal)
wire width
1.26 mm / 0.050 in (nominal)
wire thickness
1.0 mm / 0.039 in (nominal)
Gauge
18 ga
Length range
16–38 mm
Material reference
Zinc-coated wire; grade to confirm
Pieces / strip
100
Availability, material grade, finish and tool compatibility will be checked for the requested configuration and stated in your quotation.
APPLICATION EXAMPLES
Where it's used
Explore the materials, joints and workshop tasks below. Match the fastener size and tool to your own workpiece before ordering.
Cabinet back-panel attachment
Evaluate the 6 mm crown on the supported back-panel fastening line.
Supported drawer components
Select leg length for the drawer panel and receiving member specified in the component drawing.
Concealed millwork backing
Narrow-crown fastening needs sufficient timber around both legs at small component edges.
AI-generated application illustrations, not customer project photographs.
CATALOG REFERENCE DIMENSIONS
Sizes and series
Source-confirmed nominal inch labels are shown where documented. Unverified dimensions remain in the source unit; listed references do not imply every size combination is available.
9040 / 440K Series 18 Gauge Staples · catalog reference sizes
Reference
Length (mm)
9016
16 mm / 5/8 in (nominal)
9019
19 mm / 3/4 in (nominal)
9025
25 mm / 1 in (nominal)
9032
32 mm / 1 1/4 in (nominal)
9038
38 mm / 1 1/2 in (nominal)
On smaller screens, swipe the table to see every column. Confirm the final drawing, tolerances and packaging before ordering.
Listed leg lengths end at 38 mm. The series name alone does not establish a 40 mm size.
FOUR DIMENSIONS BEFORE A SERIES NUMBER
Read the crown, wire and leg together.
Crown width
Leg length
Wire section
Width × thickness
Measurement guide · schematic, not to scale. Refer to the listed dimensions and an approved order drawing.
9040 / 440K Series 18 Gauge Staples: check the entire cross-section
A familiar series number helps identify a starting point. The crown width, wire width, wire thickness and leg length determine whether a candidate staple matches the tool and joint.
1. Record the crown width and confirm the supplier’s measurement convention on the order drawing.
2. Record both dimensions of the wire cross-section; gauge alone is insufficient.
3. Choose a listed leg length for the material stack and required penetration.
4. Compare the dimensions with the exact stapler model and approve a sample.
Choose for your workpiece and equipment
01
Separate medium wire from upholstery
The reference uses 18GA, 1.26 × 1.0 mm wire. This changes penetration and surface appearance compared with the 20–22GA covering families.
02
Order a listed leg length
The catalog-reference rows span 16–38 mm. The 9040 heading does not establish that a 40 mm variant is included.
03
Approve the assembled panel
Check seating, leg breakthrough, splitting and panel retention. Where the panel contributes to racking resistance, use the furniture designer’s test requirement.
DEFINE THE ORDER, NOT JUST THE FASTENER
Packing, samples and order documentation.
Quantity & packing unit
State your quantity in pieces, strips, reels, boxes or cartons. Confirm the conversion between inner packs and shipping cartons.
Samples & minimum order
Send the selected specification and trial quantity. Sample availability, minimum order and lead time will be checked for the requested configuration.
Labels & documentation
Discuss custom packing, private labels and required drawings or documents before order approval. Keep an agreed sample, label and specification reference for repeat orders.
Questions before you order
Can I order 40 mm because the series is called 9040?
Request it separately. The current reference lists lengths through 38 mm, so a 40 mm item needs explicit confirmation.
How is it different from 9240?
Both references are 18GA, but their crowns differ: 6.0 mm here and 8.82 mm for 9240. They require separate compatibility checks.
Application limits to check
- Do not assume compatibility with every 90, K or 440K tool.
- Do not use a narrow staple where a roof system specifies a large-head nail or cap fastener.
FROM THE BLOG
