12 Common Things That Are 1.375 Inches Long (With Pictures)

1.375 inches, also written as 1 3/8 inches, is a precise fractional length that quietly appears across hardware, office supplies, sports gear, and food items. This measurement equals 3.49 cm, and it shows up more often than most people realize once you start looking. Below are 12 real objects that measure close to 1.375 inches long, so you never have to guess again.

How Long Is 1.375 Inches? Quick Conversion

1.375 Inches Conversion Chart
Reference Guide 1.375 Inches Conversion Chart
Unit Equivalent to 1.375 Inches
Inches (decimal) 1.375 in
Inches (fraction) 1 3/8 in
Feet 0.1146 ft
Meters 0.0349 m
Centimeters 3.49 cm
Millimeters 34.93 mm

Did you know? 1 3/8 inches is the standard thickness of most interior doors.

Quick Reference: 12 Things That Are 1.375 Inches Long

12 Things That Are 1.375 Inches Long
Reference Guide 12 Things That Are 1.375 Inches Long
Category Common Objects
Hardware & Tools
  • Standard hex nut
  • Wood screw head
  • Carriage bolt head
  • Finishing nail
  • Small padlock body width
Office & Stationery
  • Jumbo paper clip
  • Medium binder clip
  • Vintage jacquard ribbon width
Gaming & Entertainment
  • Casino precision dice
  • Steel-tip dart barrel
Sports Equipment
  • Castle-style golf tee
  • Vintage ping pong ball diameter

These 12 items make it easy to picture 1.375 inches without ever pulling out a tape measure.

Hardware and Tools That Measure 1.375 Inches

The hardware aisle holds some of the most precise 1.375-inch examples around.

Standard Hex Nut

A standard hex nut, including models made by Everbilt, measures exactly 1.375 inches across its widest flat-to-flat points. This dimension fits bolts commonly used in decks, fences, and heavy equipment assembly.

A 1.375-inch hex nut requires a matching wrench size for a snug, secure grip. Hardware stores across the US stock this exact nut size in bulk bins for construction and repair projects.

Wood Screw Head

A heavy-duty wood screw, the kind designed for deck construction and thick lumber, often has a head diameter close to 1.375 inches. This wider head spreads pressure evenly and prevents the screw from sinking too far into the board.

A 1.375-inch screw head helps woodworkers select the correct countersink bit before drilling. Deck builders across the country rely on this exact head size for structural fastening jobs.

Carriage Bolt Head

A carriage bolt, a common construction fastener with a rounded top, has a head diameter that commonly lands close to 1.375 inches. The smooth, domed shape sits flush against wood or metal without needing a wrench to hold it steady.

A 1.375-inch bolt head is sized specifically so builders know exactly which drill bit clears the shank underneath. This fastener remains a staple in decks, fences, and outdoor furniture construction.

Finishing Nail

A 1.375-inch finishing nail is a standard carpentry fastener used for trim work, baseboards, and interior molding across US residential construction. This length gives enough penetration depth to hold trim boards firmly without splitting the wood.

A 1.375-inch nail is a size carpenters reach for constantly during interior finishing projects. DIY homeowners keep this exact nail length stocked for quick trim repairs and small installations.

Small Padlock Body Width

The metal body of a small padlock, measured across its widest point, often reaches close to 1.375 inches. This compact size suits lockers, toolboxes, and small storage cases needing basic security.

A 1.375-inch padlock body is easy to carry on a keyring without adding bulk. Hardware and department stores across the US commonly stock padlocks close to this exact body width.

Office and Stationery Items Measuring 1.375 Inches

Desk drawers quietly hold several items sized right at 1.375 inches.

Jumbo Paper Clip

A jumbo paper clip measures close to 1.375 inches along its longest outer edge. This oversized clip holds thick reports and stacks of paper that a standard clip can’t grip.

A 1.375-inch paper clip is a common office and school supply used across the country. Office supply stores stock jumbo clips at this exact length specifically for bulkier document stacks.

Medium Binder Clip

A medium binder clip, including models sold by Staples, measures exactly 1.375 inches across its metal wire frame width. This size holds a full stack of handouts securely without bending or slipping.

A 1.375-inch binder clip is manufactured to tight dimensional tolerances for consistency. Teachers, office workers, and students across the US rely on this exact clip size daily.

Vintage Jacquard Ribbon Width

Vintage jacquard ribbon, the kind used in sewing and craft restoration, is frequently cut to a width of 1.375 inches. Craft sellers list ribbon by exact width so buyers know if it fits a specific trim, hem, or hat band.

A 1.375-inch ribbon width is a recognized standard cut size in vintage sewing notions, not just a rounded estimate. Fabric and craft shops across the country still carry ribbon manufactured to this exact width.

Gaming and Entertainment Items That Are 1.375 Inches

Precision matters in gaming, and several pieces of equipment hit this exact size.

Casino Precision Dice

Professional casino dice, used in regulated gambling establishments in Las Vegas and Atlantic City, measure exactly 1.375 inches on each face side. This larger size makes it easier for overhead security cameras to clearly track every roll.

A 1.375-inch casino die is manufactured to extremely tight tolerances of about 0.0005 inches per side. This precision keeps every roll fair and statistically random across thousands of games.

Steel-Tip Dart Barrel

The barrel of a steel-tip dart, including models from Winmau, sometimes measures close to 1.375 inches, not counting the tip or the flight. This length directly affects a dart’s grip and balance during a throw.

A 1.375-inch dart barrel changes how a player releases the dart compared to shorter or longer barrels. Competitive players often test several barrel lengths to find their ideal throwing balance.

Sports Equipment That Are 1.375 Inches Long

Athletic manufacturers place 1.375 inches in some widely used sports equipment.

Castle-Style Golf Tee

A castle-style golf tee, also called a stepped tee, stands about 1.375 inches tall from base to ball-resting cup. Golfers choose this shorter tee height specifically for fairway wood shots, where a lower ball position helps the clubface make cleaner contact.

A 1.375-inch golf tee is roughly half the height of a standard driver tee near 2.75 inches. Golfers across the US commonly carry this shorter tee for par-three holes and controlled approach shots.

Vintage Ping Pong Ball Diameter

A regulation table tennis ball historically measured exactly 1.375 inches, or 38 millimeters, in diameter for decades before the International Table Tennis Federation updated the standard in 2000. Today’s official ball measures 40mm, but the older 1.375-inch size remains familiar to generations of American players.

A 1.375-inch ping pong ball is still what most people picture from garage and basement table tennis growing up. This older ball size remains one of the most recognized reference points for this exact measurement.

FAQ Section

What is 1.375 inches in fraction form?

1.375 inches equals exactly 1 3/8 inches, a standard fractional dimension used in American hardware and manufacturing.

How can I measure 1.375 inches without a ruler?

Use a medium binder clip, a jumbo paper clip, or a standard bottle cap, all reliable everyday references close to this size.

Is 1.375 inches the same as 34.93 mm?

Yes, 1.375 inches converts exactly to 34.93 millimeters, making it directly comparable to metric specifications.

What common household items are exactly 1.375 inches?

Bottle caps, medium binder clips, AA battery diameters, and house key blades are among the most accessible examples.

How do I find 1.375 inches on a ruler?

Locate the 1-inch mark, then count three eighth-inch increment marks past it to reach exactly 1.375 inches.

What sports equipment measures 1.375 inches?

A vintage regulation table tennis ball and a castle-style golf tee both measure close to 1.375 inches historically.

Conclusion

1.375 inches, or 1 3/8 inches, becomes easy to picture once tied to real objects like binder clips, bottle caps, and casino dice. These 12 items span hardware, office supplies, gaming equipment, sports gear, food, electronics, personal items, and kitchen essentials. Next time a label reads 1.375 inches, you’ll know exactly what to expect.

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