Experts in the development and manufacture of precision fasteners,
components and systems, specializing in thin sheet attachment solutions.

SI® Press-In Inserts


Hexagonal – Types NFPA, NFPC

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Hexagonal inserts, types NFPA and NFPC provide strong, reusable threads with no heat or ultrasonics required. The hexagonal "barbed" configuration ensures high torque-out and pullout values. Available in aluminum and stainless steel.

Thru Threaded – Type PPA, PPB

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Thru threaded, types PPA and PPB are press-fit inserts with strong, reusable threads. No heat or ultrasonics are required. The slotted insert compresses allowing easy access into the mounting hole. Available in aluminum and stainless steel.

Flange-Head – Type PFLA, PFLB

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Flange-head, types PFLA and PFLB are press-fit inserts with strong, reusable threads. No heat or ultrasonics are required. The flange-head eliminates direct contact of plastic with mating parts. The slotted insert compresses allowing access into the mounting hole. Available in aluminum and stainless steel.

Straight Knurl – Type PKA, PKB

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Straight knurl, types PKA and PKB are press-fit inserts with strong, reusable threads. No heat or ultrasonics are required. The straight knurling at the top end of the insert offers higher torsional resistance. The slotted insert compresses allowing access into the mounting hole. Available in aluminum and stainless steel.

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