On-Sert® Fasteners

On-SertFasteners.jpg
Design 1
On-SertFastenersDesign1.jpg
Screw enters  through top of boss
Design 2
On-SertFastenersDesign2.jpg
Screw enters
through bottom  of boss
On-SertFastenersDesignC.jpg


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.

On-SertFastenersSingleHelicalThread.jpg 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




APEX FASTENERS, Inc 15858 Business Center Drive Irwindale, CA 91706 USA
APEX Fasteners supplies standard and custom screws, nut retainers, shoulder screws, plastites and taptites, all types of rivets, spring steel fasteners and special stampings, sems screws in standard, fractional or metric to electronics, aviation and other OEM industries worldwide. ApexFasteners.com custom manufactures screw machine components for electronic enclosure hardware as well as cold forming and cold headed specials for assembly and production requirements.
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