Threaded Inserts for Plastics by TriStar (RAF) Industries

Tri Star Industries offers a line up of threaded inserts for plastic with various methods of installation such as ultrasonic, heat, thermal, press-in and mold-in. Below you will find some of the products that can currently be found at Digi-Key.

C Series Chevron Inserts

Click here to view the data sheet for this series

Some thermoplastics, like polycarbonates and structural foams, are brittle –
especially in thin-wall applications. Our chevron inserts add considerable strength.
Two opposing bands of sharp diagonal knurls provide high tensile pull-out
load carrying capability. Little or no stress is applied to the walls of the molded holes.

Click to see part numbers
Digikey Part Number Manufacturer Part Number Size / Dimension
2254-256X100C-ND 256X100C 0.14" Dia x 0.10" H (3.6mm x 2.5mm)
2254-256X125C-ND 256X125C 0.14" Dia x 0.13" H (3.6mm x 3.2mm)
2254-256X157C-ND 256X157C 0.14" Dia x 0.16" H (3.6mm x 4.0mm)
2254-440X170C-ND 440X170C 0.19" Dia x 0.17" H (4.7mm x 4.3mm)
2254-440X226C-ND 440X226C 0.19" Dia x 0.23" H (4.7mm x 5.7mm)
2254-632X150C-ND 632X150C 0.22" Dia x 0.15" H (5.5mm x 3.8mm)
2254-632X250C-ND 632X250C 0.22" Dia x 0.25" H (5.6mm x 6.4mm)
2254-632X281C-ND 632X281C 0.22" Dia x 0.28" H (5.5mm x 7.1mm)
2254-832X185C-ND 832X185C 0.25" Dia x 0.19" H (6.3mm x 4.7mm)
2254-832X250C-ND 832X250C 0.25" Dia x 0.25" H (6.3mm x 6.4mm)
2254-832X321C-ND 832X321C 0.25" Dia x 0.32" H (6.3mm x 8.2mm)
2254-1032X250C-ND 1032X250C 0.28" Dia x 0.25" H (7.1mm x 6.4mm)
2254-1032X310C-ND 1032X310C 0.28" Dia x 0.31" H (7.1mm x 7.9mm)
2254-1032X375C-ND 1032X375C 0.28" Dia x 0.38" H (7.1mm x 9.5mm)
2254-1024X375C-ND 1024X375C 0.28" Dia x 0.38" H (7.1mm x 9.5mm)
2254-2520X312C-ND 2520X312C 0.34" Dia x 0.31" H (8.7mm x 7.9mm)
2254-2520X375C-ND 2520X375C 0.34" Dia x 0.38" H (8.7mm x 9.5mm)
2254-2520X500C-ND 2520X500C 0.34" Dia x 0.50" H (8.7mm x 12.7mm)
2254-M20X100C-ND M20X100C 0.14" Dia x 0.10" H (3.6mm x 2.5mm)
2254-M20X157C-ND M20X157C 0.14" Dia x 0.16" H (3.6mm x 4.0mm)
2254-M30X170C-ND M30X170C 0.19" Dia x 0.17" H (4.7mm x 4.3mm)
2254-M30X226C-ND M30X226C 0.19" Dia x 0.23" H (4.7mm x 5.7mm)
2254-M40X185C-ND M40X185C 0.25" Dia x 0.19" H (6.3mm x 4.7mm)
2254-M40X250C-ND M40X250C 0.25" Dia x 0.25" H (6.3mm x 6.4mm)
2254-M40X321C-ND M40X321C 0.25" Dia x 0.32" H (6.3mm x 8.2mm)
2254-M50X375C-ND M50X375C 0.28" Dia x 0.38" H (7.1mm x 9.5mm)
2254-M60X312C-ND M60X312C 0.34" Dia x 0.31" H (8.7mm x 7.9mm)
2254-M60X375C-ND M60X375C 0.34" Dia x 0.38" H (8.7mm x 9.5mm)
2254-M60X500C-ND M60X500C 0.34" Dia x 0.50" H (8.7mm x 12.7mm)

H Series Tapered Inserts

Click here to view the data sheet for this series

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H Series Tapered Inserts outperform all competitive inserts for ultrasonic and
thermal applications. Our customers confirm it.
We’ve eliminated the outward stress that occurs with other insert designs during
the installation process. Our proprietary “knuckle knurl” ensures a more uniform
flow of material into the diagonal knurls and undercuts, ensuring a complete fill,
reducing installation time and increasing holding strengths.

H Series Brass

Click to see part numbers
Digikey Part Number Manufacturer Part Number Size / Dimension
2254-256X115H-ND 256X115H 0.14" Dia x 0.12" H (3.6mm x 2.9mm)
2254-256X188H-ND 256X188H 0.14" Dia x 0.19" H (3.6mm x 4.8mm)
2254-080X188H-ND 080X188H 0.14" Dia x 0.19" H (3.6mm x 4.8mm)
2254-440X135H-ND 440X135H 0.17" Dia x 0.14" H (4.4mm x 3.4mm)
2254-440X135C-ND 440X135C 0.17" Dia x 0.14" H (4.4mm x 3.4mm)
2254-440X219H-ND 440X219H 0.17" Dia x 0.22" H (4.4mm x 5.6mm)
2254-440X285H-ND 440X285H 0.17" Dia x 0.29" H (4.4mm x 7.2mm)
2254-632X150H-ND 632X150H 0.22" Dia x 0.15" H (5.6mm x 3.8mm)
2254-632X250H-ND 632X250H 0.22" Dia x 0.25" H (5.6mm x 6.4mm)
2254-832X185H-ND 832X185H 0.25" Dia x 0.19" H (6.4mm x 4.7mm)
2254-832X312H-ND 832X312H 0.25" Dia x 0.31" H (6.4mm x 7.9mm)
2254-832X375H-ND 832X375H 0.25" Dia x 0.38" H (6.4mm x 9.5mm)
2254-1032X150H-ND 1032X150H 0.30" Dia x 0.15" H (7.5mm x 3.8mm)
2254-1024X150H-ND 1024X150H 0.30" Dia x 0.15" H (7.5mm x 3.8mm)
2254-1024X225H-ND 1024X225H 0.30" Dia x 0.23" H (7.5mm x 5.7mm)
2254-1032X225H-ND 1032X225H 0.30" Dia x 0.23" H (7.5mm x 5.7mm)
2254-1024X375H-ND 1024X375H 0.30" Dia x 0.38" H (7.5mm x 9.5mm)
2254-1032X375H-ND 1032X375H 0.30" Dia x 0.38" H (7.5mm x 9.5mm)
2254-2520X300H-ND 2520X300H 0.38" Dia x 0.30" H (9.5mm x 7.6mm)
2254-2528X300H-ND 2528X300H 0.38" Dia x 0.30" H (9.5mm x 7.6mm)
2254-2520X500H-ND 2520X500H 0.38" Dia x 0.50" H (9.5mm x 12.7mm)
2254-2528X500H-ND 2528X500H 0.38" Dia x 0.50" H (9.5mm x 12.7mm)
2254-3118X335H-ND 3118X335H 0.47" Dia x 0.34" H (11.9mm x 8.5mm)
2254-3124X562H-ND 3124X562H 0.47" Dia x 0.56" H (11.9mm x 14.3mm)
2254-3118X562H-ND 3118X562H 0.47" Dia x 0.56" H (11.9mm x 14.3mm)
2254-3824X375H-ND 3824X375H 0.56" Dia x 0.38" H (14.3mm x 9.5mm)
2254-3816X375H-ND 3816X375H 0.56" Dia x 0.38" H (14.3mm x 9.5mm)
2254-3816X625H-ND 3816X625H 0.56" Dia x 0.63" H (14.3mm x 15.9mm)
2254-3824X625H-ND 3824X625H 0.56" Dia x 0.63" H (14.3mm x 15.9mm)
2254-M16X115H-ND M16X115H 0.14" Dia x 0.12" H (3.6mm x 2.9mm)
2254-M35X150H-ND M35X150H 0.22" Dia x 0.15" H (5.6mm x 3.8mm)
2254-M30X250H-ND M30X250H 0.22" Dia x 0.25" H (5.6mm x 6.4mm)
2254-M35X250H-ND M35X250H 0.22" Dia x 0.25" H (5.6mm x 6.4mm)
2254-M40X185H-ND M40X185H 0.25" Dia x 0.19" H (6.4mm x 4.7mm)
2254-M40X312H-ND M40X312H 0.25" Dia x 0.31" H (6.4mm x 7.9mm)
2254-M50X265H-ND M50X265H 0.33" Dia x 0.27" H (8.3mm x 6.7mm)
2254-M50X438H-ND M50X438H 0.33" Dia x 0.44" H (8.3mm x 11.1mm)
2254-M60X300H-ND M60X300H 0.38" Dia x 0.30" H (9.5mm x 7.6mm)
2254-M60X500H-ND M60X500H 0.38" Dia x 0.50" H (9.5mm x 12.7mm)
2254-M80X335H-ND M80X335H 0.47" Dia x 0.34" H (11.9mm x 8.5mm)

H Series Stainless Steel

Click to see part numbers
Digikey Part Number Manufacturer Part Number Size / Dimension
2254-080X115HSS-ND 080X115HSS 0.14" Dia x 0.12" H (3.6mm x 2.9mm)
2254-256X115HSS-ND 256X115HSS 0.14" Dia x 0.12" H (3.6mm x 2.9mm)
2254-080X188H-SS-48-ND 080X188H-SS-48 0.14" Dia x 0.19" H (3.6mm x 4.8mm)
2254-256X188HSS-ND 256X188HSS 0.14" Dia x 0.19" H (3.6mm x 4.8mm)
2254-440X135HSS-ND 440X135HSS 0.17" Dia x 0.14" H (4.4mm x 3.4mm)
2254-440X219HSS-ND 440X219HSS 0.17" Dia x 0.22" H (4.4mm x 5.6mm)
2254-440X285HSS-ND 440X285HSS 0.17" Dia x 0.29" H (4.4mm x 7.2mm)
2254-632X150HSS-48-ND 632X150HSS-48 0.22" Dia x 0.15" H (5.6mm x 3.8mm)
2254-632X250HSS-ND 632X250HSS 0.22" Dia x 0.25" H (5.6mm x 6.4mm)
2254-832X185HSS-ND 832X185HSS 0.25" Dia x 0.19" H (6.4mm x 4.7mm)
2254-832X312HSS-ND 832X312HSS 0.25" Dia x 0.31" H (6.4mm x 7.9mm)
2254-832X375HSS-ND 832X375HSS 0.25" Dia x 0.38" H (6.4mm x 9.5mm)
2254-1024X150H-SS-48-ND 1024X150H-SS-48 0.30" Dia x 0.15" H (7.5mm x 3.8mm)
2254-1032X150HSS-ND 1032X150HSS 0.30" Dia x 0.15" H (7.5mm x 3.8mm)
2254-1032X225HSS-ND 1032X225HSS 0.30" Dia x 0.23" H (7.5mm x 5.7mm)
2254-1024X375HSS-ND 1024X375HSS 0.30" Dia x 0.38" H (7.5mm x 9.5mm)
2254-2528X500HSS-ND 2528X500HSS 0.38" Dia x 0.50" H (9.5mm x 12.7mm)
2254-3124X335HSS-ND 3124X335HSS 0.47" Dia x 0.34" H (11.9mm x 8.5mm)
2254-3124X562HSS-ND 3124X562HSS 0.47" Dia x 0.56" H (11.9mm x 14.3mm)
2254-3824X375HSS-ND 3824X375HSS 0.56" Dia x 0.38" H (14.3mm x 9.5mm)
2254-3816X375HSS-ND 3816X375HSS 0.56" Dia x 0.38" H (14.3mm x 9.5mm)
2254-3824X625HSS-ND 3824X625HSS 0.56" Dia x 0.63" H (14.3mm x 15.9mm)
2254-M16X115HSS-ND M16X115HSS 0.14" Dia x 0.12" H (3.6mm x 2.9mm)
2254-M20X188HSS-ND M20X188HSS 0.14" Dia x 0.19" H (3.6mm x 4.8mm)
2254-M25X285HSS-ND M25X285HSS 0.17" Dia x 0.29" H (4.4mm x 7.2mm)
2254-M35X250HSS-ND M35X250HSS 0.22" Dia x 0.25" H (5.6mm x 6.4mm)
2254-M100X375HSS-ND M100X375HSS 0.56" Dia x 0.38" H (14.3mm x 9.5mm)
2254-M100X625H-SS-48-ND M100X625H-SS-48 0.56" Dia x 0.63" H (14.3mm x 15.9mm)

HC Series Chevron Inserts

Click here to view the data sheet for this series

HC Series Inserts offer the same benefits as the C Series plus a flanged head. This insert offers a large contact area for electrical connections and greater pullout strengths for reverse entry applications.

Click to see part numbers
Digikey Part Number Manufacturer Part Number Size / Dimension
2254-H1024X250C-ND H1024X250C 0.31" Dia x 0.25" H (7.9mm x 6.4mm)
2254-H1024X375C-ND H1024X375C 0.32" Dia x 0.38" H (8.2mm x 9.5mm)
2254-H1032X225C-ND H1032X225C 0.31" Dia x 0.23" H (7.9mm x 5.7mm)
2254-H1032X250C-ND H1032X250C 0.31" Dia x 0.25" H (7.9mm x 6.4mm)
2254-H1032X375C-ND H1032X375C 0.31" Dia x 0.38" H (7.9mm x 9.5mm)
2254-H2520X300C-ND H2520X300C 0.38" Dia x 0.30" H (9.5mm x 7.6mm)
2254-H2520X500C-ND H2520X500C 0.38" Dia x 0.50" H (9.5mm x 12.7mm)
2254-H2528X500C-ND H2528X500C 0.38" Dia x 0.50" H (9.5mm x 12.7mm)
2254-H256X157C-ND H256X157C 0.19" Dia x 0.16" H (4.8mm x 4.0mm)
2254-H3118X500C-ND H3118X500C 0.44" Dia x 0.50" H (11.1mm x 12.7mm)
2254-H3124X500C-ND H3124X500C 0.44" Dia x 0.50" H (11.1mm x 12.7mm)
2254-H3816X500C-ND H3816X500C 0.55" Dia x 0.50" H (14.0mm x 12.7mm)
2254-H3824X500C-ND H3824X500C 0.55" Dia x 0.50" H (14.0mm x 12.7mm)
2254-H440X226C-ND H440X226C 0.22" Dia x 0.23" H (5.5mm x 5.7mm)
2254-H632X180C-ND H632X180C 0.25" Dia x 0.18" H (6.4mm x 4.6mm)
2254-H632X281C-ND H632X281C 0.25" Dia x 0.28" H (6.4mm x 7.1mm)
2254-H832X185C-ND H832X185C 0.28" Dia x 0.19" H (7.1mm x 4.7mm)
2254-H832X250C-ND H832X250C 0.28" Dia x 0.25" H (7.1mm x 6.4mm)
2254-H832X321C-ND H832X321C 0.28" Dia x 0.32" H (7.1mm x 8.2mm)
2254-HM20X157C-ND HM20X157C 0.19" Dia x 0.16" H (4.8mm x 4.0mm)
2254-HM30X226C-ND HM30X226C 0.22" Dia x 0.23" H (5.5mm x 5.7mm)
2254-HM35X281C-ND HM35X281C 0.25" Dia x 0.28" H (6.4mm x 7.1mm)
2254-HM40X185C-ND HM40X185C 0.28" Dia x 0.19" H (7.1mm x 4.7mm)
2254-HM40X321C-ND HM40X321C 0.28" Dia x 0.32" H (7.1mm x 8.2mm)
2254-HM50X375C-ND HM50X375C 0.31" Dia x 0.38" H (7.9mm x 9.5mm)
2254-HM60X300C-ND HM60X300C 0.38" Dia x 0.30" H (9.5mm x 7.6mm)
2254-HM60X500C-ND HM60X500C 0.38" Dia x 0.50" H (9.5mm x 12.7mm)
2254-HM80X500C-ND HM80X500C 0.44" Dia x 0.50" H (11.1mm x 12.7mm)

P & HP Series Press-in Inserts

Click here to view the data sheet for this series

P & HP Series inserts provide adequate holding strengths without the use of ultrasonic or heat equipment. These inserts are most commonly used in thermoset or
other hard plastics. The pilot end provides for fast alignment. The insert is placed in
a hole, pressure is applied and the three bands of helical knurls dig down deep and
lock the insert in place.

Click to see part numbers
Digikey Part Number Manufacturer Part Number Size / Dimension
2254-H2520X364P-ND H2520X364P 0.37" Dia x 0.36" H (9.5mm x 9.2mm)
2254-H632X247P-ND H632X247P 0.25" Dia x 0.25" H (6.4mm x 6.3mm)
2254-H832X292P-ND H832X292P 0.28" Dia x 0.29" H (7.2mm x 7.4mm)

S Series Symmetrical Inserts

Click here to view the data sheet for this series

Say goodbye to expensive part orientation feeding mechanisms. Our symmetrical
inserts can be installed either end first for faster installation and lower costs.
By decreasing outward hoop stress, symmetrical inserts decrease cycle
times. Their proportionally engineered design ensures that the displaced
material is encapsulated by knurls and undercuts. They are designed for
straight hole applications.

Click to see part numbers
Digikey Part Number Manufacturer Part Number Size / Dimension
2254-440X226S-ND 440X226S 0.15" Dia x 0.23" H (3.9mm x 5.7mm)
2254-632X281S-ND 632X281S 0.19" Dia x 0.28" H (4.7mm x 7.1mm)
2254-1032X375S-ND 1032X375S 0.25" Dia x 0.38" H (6.3mm x 9.5mm)
2254-832X321S-ND 832X321S 0.28" Dia x 0.32" H (7.1mm x 8.2mm)

SC Series Threaded Studs

The body of this threaded stud is modeled after our C Series Insert. Its key
feature is the opposing diagonal knurls, which will provide exceptional rotational
and tensile resistance. The SC Series is designed for straight molded or drilled
holes. They may be installed using the thermal or ultrasonic method or can be
molded in place.

Click here to view the data sheet for this series

Click to see part numbers
Digikey Part Number Manufacturer Part Number Size / Dimension
2254-S256XC375C-ND S256XC375C 0.12" Dia x 0.53" H (3.1mm x 13.5mm)
2254-S440X250C-ND S440X250C 0.15" Dia x 0.52" H (3.9mm x 13.1mm)
2254-S632X375C-ND S632X375C 0.19" Dia x 0.66" H (4.7mm x 16.7mm)
2254-S832X375C-ND S832X375C 0.22" Dia x 0.70" H (5.5mm x 17.7mm)
2254-S1024X375C-ND S1024X375C 0.25" Dia x 0.75" H (6.3mm x 19.1mm)
2254-S1032X375C-ND S1032X375C 0.25" Dia x 0.75" H (6.3mm x 19.1mm)
2254-S2528X500C-ND S2528X500C 0.31" Dia x 1.00" H (7.9mm x 25.4mm)
2254-S2520X500C-ND S2520X500C 0.31" Dia x 1.00" H (7.9mm x 25.4mm)
2254-S3124X625C-ND S3124X625C 0.37" Dia x 1.13" H (9.5mm x 28.6mm)
2254-S3118X625C-ND S3118X625C 0.37" Dia x 1.13" H (9.5mm x 28.6mm)
2254-S3816X750C-ND S3816X750C 0.47" Dia x 1.25" H (11.8mm x 31.8mm)
2254-S3824X750C-ND S3824X750C 0.47" Dia x 1.25" H (11.8mm x 31.8mm)
2254-SM20X375C-ND SM20X375C 0.12" Dia x 0.53" H (3.1mm x 13.5mm)
2254-SM25X250C-ND SM25X250C 0.15" Dia x 0.48" H (3.9mm x 12.1mm)
2254-SM30X250C-ND SM30X250C 0.15" Dia x 0.48" H (3.9mm x 12.1mm)
2254-SM35X375C-ND SM35X375C 0.19" Dia x 0.66" H (4.7mm x 16.7mm)
2254-SM40X375C-ND SM40X375C 0.22" Dia x 0.70" H (5.5mm x 17.7mm)
2254-SM50X375C-ND SM50X375C 0.25" Dia x 0.75" H (6.3mm x 19.1mm)
2254-SM60X500C-ND SM60X500C 0.31" Dia x 1.00" H (7.9mm x 25.4mm)
2254-SM80X625C-ND SM80X625C 0.37" Dia x 1.13" H (9.5mm x 28.6mm)
2254-SM100X750C-ND SM100X750C 0.47" Dia x 1.25" H (11.8mm x 31.8mm)

NOTE: Quoted text is taken directly from the data sheet