On-Sert® Fasteners

Basic Part Numbers	Thread Size No. (see Note 1)	On-Sert Fasteners				Plastic Boss			Applicator Tool Part No. (see Note 3)
		Design	Height H (In.)	Diam. D (In.)	Weight Lbs./M Pieces	O.D. (In.)	I.D. (In.) (see Note 2)	Min. Diam. Of Ctsk. C (In.)
NR 620005	WW 100312	6-20 & 6-18	1	.230	.354	1.5	.309-.315	.116-.120	.250
NR 632005	WW 100312	6-32	1	.230	.354	1.4	.309-.315	.116-.120	.250
NR 818005	WW 100312	8-18 & 8-15	1	.230	.354	1.4	.309-.315	.140-.144	.290
NR 818045	WW 100312	8-18 & 8-15	1	.230	.328	1.3	.279-.285	.140-.144	.220
NR 818008	WW 100500	8-18 & 8-15	1	.260	.544	3.5	.497-.503	.140-.144	.290
NR 818085	WW 160500	8-18 & 8-15	1	.254	.556	3.0	.509-.515	.140-.144	.290
NR 818006	WW 100375	8-18 & 8-15	1	.220	.422	1.9	.372-.378	.140-.144	.290
NI 818006	WDK 170438	8-18 & 8-15	2	.280	.422	1.9	.372-.378	.185-.250	none
NR 832006	WW 100375	8-32	1	.220	.422	1.9	.372-.378	.140-.144	.290
NI 832006	WDK 170438	8-32	2	.270	.422	1.9	.372-.378	.185-.250	none
NR 101606	WW 100375	10-12 & 10-16	1	.230	.422	1.8	.372-.378	.160-.164	.290

Basic Part Numbers	Screw Size No. (driven to 5/16" penetration)	Hole Size (I.D.)(In.)	High Impact Styrene		Polycarbonate		ABS		Acetal
			Max. Torque (In. Lbs.)	Average Pull-Out (Lbs.)	Max. Torque (In. Lbs.)	Average Pull-Out (Lbs.)	Max. Torque (In. Lbs.)	Average Pull-Out (Lbs.)	Max. Torque (In. Lbs.)	Average Pull-Out (Lbs.)
none	8-18	.142 inter. Fit	10	150	10	162	15	375	25	530
NR 818006	8-18	.142 inter. Fit	27	280	30	370	33	438	53	680
none	8-18	.250 clear. Fit	Assembly Not Possible
NR 818006	8-18	.250 clear. Fit	15	118	20	129	15	68	15	107

Note 1: The thread form of Parts NR440004. NR 832006 and NI 832006 is designed to accept either a machine screw of Type F tapping screw of the thread size designed. 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 scew 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 magentized 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 pervent cross-threading and resist screw pull-out. Yet screws may be removed without harming the fastenders or the boss. On-sert fasteners thus preform the same function solid inserts byt 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.

Threaded Palnuts

On-Sert Fasteners