A Fastener Megastore™ with Lower Prices and Volume Discounts!

DIN 985 Nylon Insert Hex Lock Nuts

DIN 985 Nylon Insert Hex Lock Nut

DIN 985 Nylon Insert Hex Lock Nuts are internally machine screw threaded hex nuts that rely upon an undersized captive nylon (polyamide) washer to create the prevailing torque feature that resists rotation and, hence, loosening. Identified as "regular" pattern or "thin type," they are considered one-way lock nuts because they are always installed so the nylon insert threads on last. While the non-metallic insert functions as a gas and moisture seal, it is limited with regard to temperature (-58 to +250°F) and chemicals it can withstand. And even though the insert is resilient and largely recovers to its original size when the nut is removed, nylon insert lock nuts can only be reused a limited number of times. It is unlikely that thread galling will occur with steel nuts but the additional mating thread friction introduced by the nylon insert may cause galling with stainless steel nuts. Class 6, 8 and 10 steel nuts are available as are A2, A4 and A4-80 stainless steel. Coarse threads are standard but many sizes are offered with fine and extra fine threads. The finish for steel is zinc plated. Thread tolerance is 6H; right-hand threads are standard. Always ensure that the nut Class is equal to or greater than the screw Class. DIN 985 Nylon Insert Hex Lock Nuts are similar to ISO 7040 and ANSI B18.16.3M. If a heavy pattern (high type) nylon insert hex lock nut is required, consider DIN 982.

Filters

Size:

Size

-- Select --
Grade:

Grade

-- Select --
Material:

Material

-- Select --
Finish:

Finish

-- Select --
Code Product Qty. Package Qty. Carton Add to Basket
NQB762-500 M24-3.0 Nylon Insert Hex Lock Nut DIN 985, A4 Stainless Steel
NPJ772-500 M27-1.5 Extra Fine Thread Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPF774-500 M27-3.0 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPN774-500 M27-3.0 Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NPQ784-500 M30-2.0 Extra Fine Thread Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NPF787-500 M30-3.5 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPN787-500 M30-3.5 Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NPJ796-500 M33-2.0 Extra Fine Thread Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPQ796-500 M33-2.0 Extra Fine Thread Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NPF798-500 M33-3.5 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPN798-500 M33-3.5 Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NPP808-500 M36-3.0 Fine Thread Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NPF809-500 M36-4.0 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPN809-500 M36-4.0 Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NPF818-500 M39-4.0 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPN818-500 M39-4.0 Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated
NPJ847-500 M48-3.0 Extra Fine Thread Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPF849-500 M48-5.0 Nylon Insert Hex Lock Nut DIN 985, Class 8, Zinc Plated
NPN849-500 M48-5.0 Nylon Insert Hex Lock Nut DIN 985, Class 10, Zinc Plated

Product Filter Help

It's easy and fast to find the exact item you're looking for using these filters. Depending on the item, you can filter by Size (diameter and thread), Length, Grade/Class, Material and Finish/Plating. Here's how…

  • Click in a Select box to view the options. It may be necessary to scroll to see the entire list. The number of matching items is displayed in parentheses ( ).
  • Click on the desired item and -- Select -- will change to 1 Selected. You can select more than one item in each Select box. For example, you can select two sizes and 1 Selected will change to 2 Selected.
  • Click in other Select boxes and make more choices. Available options will be based on selections you've already made.
  • Even though there are thousands of fasteners to choose from a particular material or finish may not be available in every size and length. So, try different combinations of filters like Size, Grade and Material to see matching Lengths and Finishes.
  • To deselect a single filter option, click in the Select box and click on the selected option. It will appear at the top of the list in bold. To clear all filter selections, click on the Clear Filters button.

Even after filtering there may be several pages of items. The number of pages will be displayed to the left of the Add All Selected Items button. Click on a page number or the arrows to page forward and back.

Press Esc to close this window.