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3/32" x 51mm Imperial Hex Allen Wrench Key Plain Black Uncoated Din 911

As low as $0.153 /each
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Buy 500 + Buy 500 - 999 $0.22 each $110.00 26.67%
Buy 1000 + Buy 1000 + $0.18 each $180.00 18.18%

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SKU: 35AKS332P

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More Information
System of Measurement Imperial
Product Allen Key
Product Types Hex T Handle
Size 3/32"
Corrosion Protection Level Low
Class Grade High Tensile
Material Alloy Steel Heat Treated
Finish Plain Black Uncoated
Length of short arm (b) 15.00 - 20.00mm
Length (l) 51mm
Length of long arm (l) 47.00 - 54.00mm
Width Across Flats (f) 2.34 - 3.00mm
Width Across Corners (c) 2.62 - 2.67mm
Drive Type Hex
Radius of Bend (r) 2.39mm
Standard Made To DIN 911
Brand Brighton Best
Alternative Brands Hobson Engineering | Bremick Fasteners

Dimensional data is a guide only. Tolerance differences exist between brands and batches

3/32" Hex Allen Keys are L-shaped hex keys and hex ball end screwdrivers that drive socket head cap, button head, countersunk and grub screws by their internal hex recess.

About Hex Allen Keys

Hex Allen Keys come in two forms here: the classic L-shaped key (short arm for reach, long arm for leverage) and the Bondhus hex ball end screwdriver, whose ball-shaped tip engages a socket screw at up to about 25 degrees off axis for awkward access. Either way the size is the AF (across-flats) measurement of the hex, in metric or imperial - every socket screw takes one specific AF size, so match the tool to the screw, never force the next size up or down.


Also known as
Allen Key · Hex Key · Allen Wrench · Hex Wrench · Ball End Screwdriver · Balldriver

Frequently Asked Questions

What size Allen key do I need?
Match the key's AF (across-flats) size to the screw's socket - every socket screw takes one specific key size.

An M6 socket cap screw takes a 5mm key, M8 takes 6mm, and so on. See our Allen key size chart for every metric and imperial socket screw we stock: https://www.boltandnut.com.au/allen-key-sizes-for-socket-product#4. Never run an undersized key - it slips inside the recess and strips it.

Are metric and imperial Allen keys interchangeable?
No. Close sizes like 5/32" and 4mm feel similar but the loose fit rounds the socket under load.

Match the key system to the screw: metric keys for metric socket screws, imperial keys for imperial. If a key feels even slightly loose, it is the wrong one.

What does the size on the key mean?
The AF (across-flats) measurement of the hex section - the distance between two opposite flats.

It is the same AF system used for the socket in the screw head, which is why key and screw sizes pair exactly.

Why is one arm longer than the other?
The long arm gives leverage, the short arm gives access.

Put the short arm in the screw and turn with the long arm for maximum torque. Flip it - long arm in the screw - when you need speed or the fixing sits in a deep recess.

Can I use an Allen key on Torx or square drive screws?
No - hex keys suit hex sockets only.

A hex key forced into a Torx or square recess damages both the key and the screw. Match the driver to the recess; our driver bits range covers Torx, square and the rest.


Material & Coating

Plain Black Uncoated Carbon steel. No corrosion protection. The dark colour is a thin oxide layer from the heat treatment process, not a corrosion barrier. Appearance varies from light grey to dark black across batches due to the heat treatment process, so colour consistency is not guaranteed between orders.


Measurement

Sizing Allen keys are sized by the across-flats (AF) measurement of the hex tip - a 5mm key fits a screw with a 5mm socket. The size to buy is set by the screw, not the key: check your screw's specifications for its key size, or see our Allen key size chart. Long-arm and ball-end versions add reach and angle access; arm lengths are in the specifications table above.

For exact tool dimensions, see the CAD drawing and product specifications table directly above this description.


Resources

Technical library PDFs

For full technical data including key product information, range and a CAD drawing, see our Technical PDFs library.

Measurement conversion calculators

Convert between metric and imperial sizes, gauge to mm, decimal to fraction and TPI to pitch with our measurement conversion calculators.

Pricing & Delivery

Includes GST, a Tax Invoice and Free Standard Delivery anywhere in Australia.

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Disclaimer

Technical data Researched and compiled from numerous industry sources for the sole purpose of providing basic information. All material is advisory only and its use by anyone is entirely voluntary. Reliance on it for any purpose by anyone is at the sole risk of that person, and Bolt and Nut Australia is not responsible for any loss, claim or damages arising therefrom. In developing this information, Bolt and Nut Australia has made a determined effort to present it accurately.

Measurements Sizes are taken from supplier catalogues or hand-measured and should be used as a guide. Minor variation between batches is normal. Stock is sourced from various suppliers, so differences may exist between batches in markings, appearance or finish.

Product Photos & PDF Data Sheets Represent the product type, not exact size. PDFs are a reference guide only. Specifications may change without notice.

If you see any problems with any of our specifications or you require additional information please contact us.

Delivery

Orders UNDER $30

Weigh less than 500grams

Exceptions: Tools, Kits, Bulky items = Sent as a parcel with tracking

Small orders that fit into the slot of your Letterbox are sent:

FREE with Aust Post Letter delivery with NO TRACKING and delivery between 4-12 business days

Or

Select a Quicker delivery service

  • $7.00 Parcel Delivery 2-7 business days
  • From $12.00 Express Delivery 1-4 business days
  • From $14.00 StarTrack PREMIUM Express Delivery 1-3 business days

Or

Click & Collect - Warehouse pickup

Unit 9, 93 Rivergate Place, Murarrie, QLD

Place your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 4pm, Monday - Friday

Orders OVER $30

Weigh more than 500grams

Included is orders under $30 but weigh more than 500grams or wont fit in the slot of your letterbox

Including Large and Bulky heavy orders are sent:

FREE as a Parcel Delivery WITH TRACKING and delivery between 2-7 business days

Or

Select an Express delivery service

  • From $12.00 Express Delivery 1-4 business days
  • From $14.00 StarTrack PREMIUM Express Delivery 1-3 business days
  •  

Or

Click & Collect - Warehouse pickup

Unit 9, 93 Rivergate Place, Murarrie, QLD

Place your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 4pm, Monday - Friday

All delivery dates are estimated and depend on stock availability, delivery location, service chosen, size of order, time of year, when order was placed e.g long weekends or sale periods. 

Further delivery information can be found on our Delivery page

Supplier Details

MPN 511006
UPC 82893244808
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