Bostitch 1-3/8 staples (SX50351-3/8G) are 18 gauge narrow crown staples with a 7/32 inch crown and a 1-3/8 inch leg. They're galvanized and come 3,000 to a box, for trim, paneling and other finish work.
At a Glance
- Part number: SX50351-3/8G
- Gauge: 18
- Crown: 7/32 inch narrow crown
- Leg: 1-3/8 inch
- Finish: Galvanized
- Count: 3,000 per box
Why Choose These 1-3/8 Staples
A narrow 7/32 crown leaves a small mark, so these 1-3/8 inch narrow crown staples (7/32 crown staples) work well where the fastener will show. The 1-3/8 leg reaches through thicker trim and panels, and the galvanized finish helps them drive smoothly.
Compatible Tools
Bostitch lists the SX5035 series for these staplers:
Review your tool's manual to confirm it takes a 1-3/8 inch leg before you add a box to your order.
Uses
- Trim, molding and paneling
- Cabinet backs and furniture work
- Underlayment and thin sheathing
- General finish carpentry
Choosing the Right Size
The SX50351 line comes in several leg lengths. Use a leg that goes through your top piece and well into the material below. For thinner trim, a shorter leg is enough; for thicker panels, these 1-3/8 staples give more hold. Review the size in the part number: "3/8G" means 1-3/8 inch.
Narrow Crown vs. Wide Crown
Narrow crown staples like these leave a small, neat mark and are less likely to split thin trim. Wide crown staples hold more surface and suit sheathing, roofing and packaging. Pick narrow crown for finish work you'll see and wide crown when holding power matters more than looks.
Tips for Using Them
Set your air pressure so the staple sits flush without driving too deep. Try a few on scrap first. Keep boxes dry, and add a spare box to your order before a big job so you don't run out halfway through.
Why Buy From Ample Supply
Ample Supply has worked in fastening for more than 40 years and carries 55+ brands from Sycamore, Illinois. Orders placed by 4:00 PM EST ship the same day, so you can restock fast.
Bostitch 1-3/8 Staples FAQ
What gauge are SX50351 staples?
18 gauge, with a 7/32 inch narrow crown.
How many staples are in a box?
3,000.
Can I use a longer staple than my tool is rated for?
No. Use the leg lengths your tool's manual lists, or the staple may jam or not drive fully.
Will they fit my stapler?
They fit Bostitch SX-series 18 gauge staplers rated for a 1-3/8 inch leg, like the SX150K-1 and SX1838K.
