There are two types of insert nuts: screw-in type and press-in type.
At Hiroseki Instrument Co., Ltd., we handle two types of "insert nuts": screw-in type and press-fit type. The "screw-in type" is an embedded nut used for reinforcing or repairing screw holes in materials such as plastic, light metals, and steel plates. It can also be utilized for reprocessing defective female threads in plastic, light metals, steel plates, and products through tapping. When the strength of the female thread is weak and cannot provide sufficient tightening force during tapping, inserting this nut allows for reliable screw fastening. The "press-fit type" is an insert used after resin molding, which is inserted into a formed hole during molding using press-fit or heat press methods to create threads. *We also handle "insert collars" (for press-fit and simultaneous molding). 【Screw-in Type Insert Nut Features】 ○ Machined with high precision on NC automatic lathes, ensuring stable quality after insertion. ○ Easy for anyone to insert, resulting in high-strength female threads in a short time. ○ Using a locking mechanism during insertion increases the fixing strength of the product, allowing for reliable screw fastening. ○ Fixed by screwing into a pre-tapped hole using an insertion tool.
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【Screw-in Lineup】 [Brass] ○IRB-W/IRB-CW: Pre-coated with anti-loosening agent ○IRB-SW/IRB-SCW: Pre-coated with anti-loosening agent; slotted ○IRB-S/IRB-SC: Slotted ○IRB/IRB-C [Stainless Steel] ○IRU-W: Pre-coated with anti-loosening agent ○IRU-SW: Pre-coated with anti-loosening agent; slotted ○IRU-S: Slotted ○IRU [Aluminum] ○IRL-KW (Kanizen plating)/IRL-BW (black anodized): Pre-coated with anti-loosening agent ○IRL-K (Kanizen plating)/IRL-B (black anodized) [Insertion Tools] ○IR: Dedicated for non-slotted ○IR-S: Dedicated for slotted ○IR-R: Dedicated slotted tip metal part (for replacement) 【Press-fit Lineup】 [Brass] ○HSD/HFD: Datch insert ○HSB/HSB-Z/HFB: Bit insert ○HUDII: Ultra Insert II ○HUDIV/HFU: Ultra Insert IV ○HMIB-Z: Mini bit insert [Nylon 66] ○NNI: Nut-integrated insert 【Insert Color Lineup】 [Brass] ○IC-Z: For press-fitting ○ICM: For simultaneous molding
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We, Hirosugi Instruments, are a comprehensive manufacturer of mechanical and electronics parts, dealing with spacers, terminals, washers, bushes, screws, and more. Our wide range of products boasts a diverse lineup that matches various applications, and we have received high praise from customers in various industries for providing multifunctional, high-quality products with short delivery times and low costs. From product development to design, procurement, and technical support, we provide one-stop support through our product offerings. ■ Company Features ■ 1: Offering a diverse selection of over 110,000 standard parts. 2: One of the largest spacer lineups in Japan. 3: Free shipping for orders over 2,000 yen (excluding tax). 4: Orders can be placed starting from a minimum lot of 50 pieces. 5: High-quality standard products at ISO levels. 6: Fast delivery from our own stock for all products. 7: Affordable pricing with cost control. 8: Support for issuing various certificates. 9: Actively supporting the production of custom products. 10: Providing consistent and specialized services.