Click to enlarge

Palnut® On-Sert® Fasteners

[NR 440004]

NOTE 1.The thread form of Parts NR440004, NR832006 and NI832006 is designed to accept either a machine screw or Type F tapping screw of the thread size designated. Each of the other parts accommodates a tapping screw of the size indicated.

NOTE 2.For maximum screw pull-out resistance with Design 1 parts, the boss I.D. should be as specified above to provide an interference fit with the screw. On-sert fasteners can also be used where the screw clears the I.D. of the boss, but this arrangement reduces resistance to screw pull-out.

NOTE 3.Design 2 parts should always be installed with the appropriate applicator tool which is designed to protect the projecting thread form from deformation by pressure or a direct blow. Although Design 1 parts may be installed by tapping directly on the top of the fasteners with a hammer, the magnetized applicator tool facilitates handling and positioning.

These distinctive fasteners with a single helical thread slip over hollow plastic bosses and prevent splitting when screws are driven. They also prevent cross-threading and resist screw pull-out. Yet screws may be removed without harming the fasteners or the boss. On-sert fasteners thus perform the same function as solid inserts but cost only about one-fifth as much. One type is used when screws enter the top of a boss while another type is used when screws enter the bottom of the boss.
Specifications
Thread Size No. (See Note 1) 4-40
Design 1
Height (In.) 0.22
Diameter (D) (In.) 0.284
Weight (Lbs./M Pieces ) 1
O.D. (In.) .247-.253
I.D. (In.) (See Note 2) .096-.100
Min. Dia. of Ctsk. (C) (In.) 0.18
Applicator Tool Part No. (See Note 3) WW 100250
Material Spring Steel
Join Our Email List
Email:  
SafeSubscribe Label

Our website uses cookies. For more information on our cookie use, see our Privacy Policy. By continuing to use this website you agree to our use of these cookies.