SAE Substitutes for MM
| Imperial Hex Key |
Metric Hex Size |
| 3/16″ |
5 mm |
| 7/32″ |
5.5 mm & 6 mm |
| 1/4″ |
7 mm |
| 5/16 “ |
8 mm |
What are standard Allen wrench sizes?
The common SAE Allen wrench sizes range from 1/16″ to 3/8″ in diameter. Of the sizes in this range, the most popular ones are 1/8″, 3/32″, 7/64″, 5/32″, 3/16″, 1/4″, & 7/32″.
Are Allen and hex wrench the same?
Are hex and Allen keys the same thing? Although there’s always some potential for confusion wherever two different terms are used for the same item, in this case it’s pretty straightforward – to all practical intents and purposes, hex keys/wrenches and Allen keys are indeed essentially the same thing.
How are Allen wrench sizes measured?
Sizing. Hex keys are measured across-flats (AF), which is the distance between two opposite (parallel) sides of the hexagon.
What size is a 5/16 Allen key? – Related Questions
What size is my allen screw?
Diameters of Screws / Bolts
To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.
What does SAE stand for Allen wrench?
SAE stands for Society of Automotive Engineers. This form of measurement was used primarily on cars made in the USA. This is why more often than not if you’re in the United States, you’re most likely finding wrenches and sockets in SAE sizings. AE sockets are sized in inches and fractions of inches.
What size is a 2.5 mm Allen wrench?
Length: 3-7/16 in.
What size is a 3/32 Allen wrench?
Allen Wrench Sizes & Dimensions
| Short Arm SAE Allen Wrench Dimensions (Hex Key) |
| 1/16″ |
0.0625″ |
0.562″ |
| 5/64″ |
0.0781″ |
0.609″ |
| 3/32″ |
0.0937″ |
0.656″ |
| 7/64″ |
0.1093″ |
0.703″ |
What size allen key is M8?
Metric Allen Key Table
| Socket Shoulder Screw |
Key Size |
| 6 (M5) |
3mm |
| 8 (M6) |
4mm |
| 10 (M8) |
5mm |
| 12 (M10) |
6mm |
What size is a number 5 Allen wrench?
Long Arm Black Hex Allen Key Wrench 5/16 Inch – Qty 25.
What is smaller than a 5 64 Allen wrench?
Adding to our precision sizes, the common SAE Allen wrench sizes are 1/16″, 5/64″, 3/32″, 7/64″, 1/8″, 9/64″, 5/32″, 3/16″, 7/32″, 1/4″, 5/16 “, & 3/8″.
What is smaller than a 5/16 bolt?
Standard sizing in America are as follows: 5/8, 19/32, 9/16, 1/2, 7/16, 3/8, 11/32, 5/16, 9/32, 1/4, 7/32, 3/16, 5/32, and 1/8.
What size bolt is between 1/4 and 5 16?
Metric / Standard Wrench Conversion Chart
| Bolt Diameter |
Metric |
Standard |
| 1/8″ |
8mm |
5/16″ |
| 3/16″ |
10mm |
3/8″ |
| 1/4″ |
11mm |
7/16″ |
| 5/16″ |
13mm |
1/2″ |
Are Torx and Allen keys the same?
Are torx and Allen keys the same? The answer is no – torx and Allen keys are not the same. They’re used for more or less the same purpose, though Torx keys feature a star or asterisk-shaped cross-section, rather than the hexagonal shape of an Allen key.
Can I use a hex key instead of Torx?
The short answer is…you’ll break your torx wrenches on a hex screw head. The fragile tips of a torx or security star bit are prone to bending & snapping without fitting snugly inside of the screw head.
Is there a universal Allen key?
Peter Wen is taking his turn now with his evolutionary design for an universal allen key. The TeleHex puts a twist on the standard pack of folding allen keys by packing a 3mm, 4mm, 5mm, and 6mm allen head into a single sliding unit.
Will a star work for a Torx?
Our star bits can be found in many of our sets including Master Set #5575, #5589 Ultimate Gunsmithing Set and Star sets#6810 and #1068. To answer the question, Chapman star bits fit Torx screws just as well as Torx bits, but are an overall improved design!
Is Torx 5 point or 6 point?
Torx (pronounced /tɔːrks/) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 by Camcar Textron.
Why do companies use Torx screws?
Torx screws are typically used in vehicles, motorcycles, bicycles, computer systems, hard disk drives and consumer electronics. The unusual star-shaped head makes them far more secure than regular flat-head or cross-head screws and allows higher torque transmission so screws and bolts can be tightened more securely.
Why do some Torx have a hole in it?
Anti-Theft. What exactly is a tamper proof Torx bit and what purpose does it serve? Simply put, they are Torx (or Star) screwdrivers that have a round hole in the middle to match the Star/Torx screws that have a pin. Tamper proof screws are usually inserted so they cannot be interfered or changed easily.