Three identical M3 304 stainless steel nylon insert lock nuts on white

M3 M4 M5 Nyloc Nuts - 304 Stainless Steel Nylon Insert Lock Nuts

M3
$0.20 NZD
each Save 15% at 25+
Skip to product information
Three identical M3 304 stainless steel nylon insert lock nuts on white
  • Three identical M3 304 stainless steel nylon insert lock nuts on white
  • Top view of an M3 stainless steel lock nut with white nylon insert
  • Side view of an M3 304 stainless steel nylon insert lock nut
  • M3 nylon insert lock nut dimensions including 0.5 mm pitch and width across flats
  • Top view of an M4 stainless steel lock nut showing the blue nylon insert ring
  • Side view of an M4 304 stainless steel nylon insert lock nut
  • M4 nylon insert lock nut dimensions: M4 x 0.7 thread, 7 mm across flats, 4.70 to 5.00 mm high
  • Top view of an M5 stainless steel lock nut showing the blue nylon insert ring
  • Side view of an M5 304 stainless steel nylon insert lock nut
  • M5 nylon insert lock nut dimensions: M5 x 0.8 thread, 8 mm across flats, 4.70 to 5.00 mm high
M3 M4 M5 Nyloc Nuts - 304 Stainless Steel Nylon Insert Lock Nuts
SKU: FST-NYLOC-M3-SS304

M3 M4 M5 Nyloc Nuts - 304 Stainless Steel Nylon Insert Lock Nuts

$0.20 NZD
Size
Order before 7:30am for same-day dispatch Dispatch 7 days a week, excluding public holidays

NZ Post: 1-2 days urban · 2-4 days rural

Shipping from $5.99 urban / $9.99 rural, or free pick-up in Te Awamutu.

Buy more, pay less Prices shown are per unit. Add enough of this item and the lower rate applies on its own at checkout. There is no code to enter and you do not need to buy a pack. Choosing a tier here just sets the quantity for you. Larger quantities go out in the same bag, so packing, handling and postage cost us less per unit. We pass that saving straight on to you, so you can buy more for less.

Minimum order quantity: 10

Easy 30-day returns · 12-month warranty

Add $66.00 for Free Urban delivery ($88.00 for Rural)
Urban $66 Rural $88

Nylon insert lock nuts in M3, M4 and M5 for fastenings that see vibration or movement. The 304 stainless steel body resists corrosion, and the nylon insert grips the bolt thread so the nut stays put without a spring washer or thread locker.

Specifications

SizesM3, M4, M5
Thread pitchM3 0.5 mm, M4 0.7 mm, M5 0.8 mm
Material304 stainless steel
Locking featureCaptive nylon insert
Insert colourM3 white to translucent grey, M4 and M5 blue
FinishNatural silver
Overall heightM3 3.7 to 4.0 mm, M4 and M5 4.7 to 5.0 mm
Width across flatsM3 5.5 mm, M4 7 mm, M5 8 mm
Tool size5.5, 7 or 8 mm spanner or socket

Datasheets

Technical datasheet (M3, M4, M5) PDF

What's in the box

1x
304 stainless steel nylon insert lock nut, in the size you choose

Sold individually with a minimum of 10 per size. The cart quantity is the number of nuts.

Great for

M3 brackets, enclosures and 3D printer parts
M4 and M5 frames, aluminium extrusion and mounts
Robotics joints and pivots that see vibration
Workshop and repair stock

Fitting

  1. Match the thread

    Use the same size bolt: M3 x 0.5, M4 x 0.7 or M5 x 0.8 mm coarse thread.

  2. Start from the metal-thread side

    Start the metal threads by hand before using a tool.

  3. Engage the nylon insert

    Thread far enough for the bolt to enter the nylon locking section, then tighten for the joint.

Note: Proof load, prevailing torque and a tightening torque are not published for this unbranded stock. Use the bolt or joint maker's torque guidance where it is available.

Frequently Asked Questions

Answers to the questions buyers ask most.

Which size do I need?
Match the nut to your bolt: M3 for 3 mm screws, M4 for 4 mm and M5 for 5 mm. All three are standard metric coarse thread, 0.5, 0.7 and 0.8 mm pitch.
Which side goes onto the bolt first?
Start from the metal-thread side. The bolt then enters the nylon insert, which creates the locking resistance.
How many nuts will I receive?
Each size is sold per nut with a minimum of 10. Your cart quantity is the number of nuts you receive, and volume discounts start at 25.
Can a nylon insert lock nut be reused?
Inspect it first. Replace it if the threads or insert are damaged, or if it no longer gives noticeable resistance when you thread it on.

Have a Question About This Product?

Send it through and we will get back to you by email.

Why Buy from NZN

Useful parts, fair prices and someone local to help.

I'm Lukas, an engineering student and maker based in Te Awamutu. NZN grew out of a CNC build that dragged on for months because every missing cable, bolt or electronic part meant another overseas order. I started the shop so Kiwi makers can spend more time building and less time waiting for the next parcel.

More about NZN Electronics

  • Stocked here in New Zealand

    Orders are picked and packed in Te Awamutu and dispatched within 24 hours every day, excluding public holidays. NZ Post target delivery is 1-2 days urban and 2-4 days rural. In Te Awamutu and Kihikihi you can choose local delivery at checkout: same day if you order before 8am, otherwise next day.

  • Fair prices, clearly shown

    Prices are kept competitive and quantity discounts are shown upfront. Free delivery starts at $66 for urban addresses and $88 for rural addresses.

  • 30-day returns and 12-month warranty

    Get in touch if something is not right and we will help sort it.

  • Practical product support

    Ask a product question and get help from a real person in New Zealand who knows the range.

You may also like