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Certificate #10254
1000 Piece / $125 Minimum Order
Quality threaded inserts, made in America
Tri-Star Inserts are RoHS Compliant
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Tri-Star Industries, Inc. molded-in blind inserts for plastics

Molded-in Blind Threaded Inserts for PlasticMB Series: Molded-in Blind Threaded Inserts for Plastic

Our MB Series threaded insert is designed to be molded into the plastic component during the molding cycle. Typically, the insert is placed on a core pin in the mold during the molding cycle. The insert is designed with aggressive knurling and undercuts to resist rotational and tensile pull loads. The part has a closed bottom (blind thread) to eliminate plastic flow into the threads. Although our catalog insert is brass, this product can also be manufactured in stainless steel, steel and aluminum.

Click here to download the catalog page for Tri-Star's mold-in blind inserts for plastics (96k PDF).

Molded-in Blind Threaded Inserts for Plastic

Note: The manufacturing process may leave a small cut-off nib on the closed end.

MOLD-IN BLIND THREADED INSERTS
INCH   METRIC   A
±.005
B
±.004
C
±.004
D
±.005
Min. Full
Thread
Thread
Size
Part
Number
Thread
Size
Part
Number
2-56 256 x 156MB .156 .156 .142 030 4
256 x 219MB .156 .219 .142 030 6
4-40 440 x 205MB M3.0 x 0.5 M30 x 205MB .188 .205 .171 .030 4
440 x 281MB .188 .281 .171 .030 6
440 x 344MB M30 x 344MB .188 .344 .171 .030 8
6-32 632 x 250MB M3.5 x 0.6 .219 .250 .202 .060 4
632 x 344MB .219 .344 .202 .060 6
632 x 469MB .219 .469 .202 .060 10
8-32 832 x 469MB M4.0 x 0.7 M40 x 469MB .250 .469 .226 .060 10
.250   .226 .060  
.250   .226 .060  
10-24 1024 x 438MB M5.0 x 0.8 .281 .438 .259 .060 6
1024 x 531MB .281 .531 .259 .060 8
1024 x 750MB .281 .750 .259 .060 12
10-32 1032 x 281MB M5.0 x 0.8 .281 .281 .259 .060 4
1032 x 438MB .281 .438 .259 .060 6
1032 x 531MB .281 .531 .259 .060 8
1/4-20 2520 x 531MB M6.0 x 1.0 M60 x 531MB .344 .531 .321 .090 6
2520 x 625MB† M60 x 625MB† .344 .625 .321 .090 8
1/4-28 .344   .321 .090  
2528 x 625MB† .344 .625 .321 .090 12
5/16-18 3118 x 719MB M8.0 x 1.25 .438 .719 .404 .094 8
.438   .404 .094  
5/16-24 3124 x 719MB† .438 .719 .404 .094 10
.438   .404 .094  
3/8-16 3816 x 812MB .500 .812 .466 .094 8
3816 x 890MB† .500 .890 .466 .094 9
3/8-24 .500   .466 .094  
.500   .466 .094  

† Non-Stocking Item – Minimum Order May Apply

Check availability of other items by calling 1-800-882-8980 x12, or email sales@tristar-inserts.com.
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Tri-Star Industries, Inc.
101 Massirio Dr., Berlin, CT 06037 :: Tel 860-828-7570 :: Fax 860-828-7475 ::
sales@tristar-inserts.com