STAINLESS STEEL NYLON INSERT NUTS HIGH TYPE DIN 982

Nylon Insert Nuts High Type DIN 982 — DIN 982 is the taller sibling in the nyloc family: below the nylon collar, the body extends further than a standard DIN 985 nyloc, giving substantially more full metal thread engagement in addition to the polymer lock. That extra engagement matters where the joint needs to carry a genuinely higher working load as well as resist vibration — the standard-height nyloc's shorter metal section is fine for general fixing, but under sustained or heavy loading it can be the limiting factor in the joint's overall capacity, whereas the high type spreads that load over more thread. The locking mechanism itself is identical to any other nyloc: a nylon collar with a bore slightly smaller than the thread deforms as the bolt passes through, generating continuous prevailing torque independent of clamp tension. Typical applications include higher-stress mechanical assemblies, structural fixings that also see vibration, and any joint where a plain nyloc's height feels marginal for the load involved. As with all nylon insert designs, reuse gradually reduces locking performance since the nylon deforms a little more each time it's removed and refitted, so a fresh nut is the safer choice after disassembly on anything safety-critical, and the standard polymer temperature ceiling still limits its use in hot environments — an all-metal locking nut such as Art.980 should be used instead where heat is a factor. A2 stainless covers most general higher-load applications; A4 is worth specifying for marine or heavily corrosive settings, since a taller nut represents more surface area and thread exposed to whatever environment it sits in. Sizing follows the mating bolt's diameter, pitch, and grade as normal, but where a design is marginal on thread engagement, stepping up from a standard nyloc to this high type is worth considering before reaching for a larger diameter altogether.

FAQs
How much more thread engagement does the high type give compared with a standard nyloc?
The exact figure varies by size, but the additional body height below the nylon collar is substantial enough to meaningfully increase load capacity over a standard-height nyloc of the same diameter — worth checking against the specific dimensions for the size in question.

Would a larger diameter standard nyloc be a better fix for a marginal joint than stepping up to DIN 982?
Not necessarily — increasing diameter changes the whole joint design and the mating bolt, whereas switching to the high type keeps the same thread size while adding engagement, which is usually the simpler change where the existing bolt size must stay the same.

Are DIN 982 nuts reusable?
Like other nylon insert nuts, they can be reused a limited number of times before the nylon's locking effectiveness diminishes. New nuts are recommended for safety-critical joints after removal.

Does the taller body affect how the nut is driven or torqued?
No, standard sockets and spanners engage the same hex flats as any other nut; the additional height is below the wrenching surface and doesn't change how the nut is tightened.