山崎 List of Products and Services

Yamazaki Co., Ltd. handles "bolts" that can be used for general screw fastening and equipment for specific applications. We offer various shapes of bolts depending on the installation location, including "hex bolts," heat-treated "high-strength hex bolts," and "eye bolts" used for hanging when attached to equipment. 【Product Lineup】 ■ Hex Bolts ■ High-Strength Hex Bolts ■ Eye Bolts ■ U Bolts ■ Flange Bolts *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. offers "Caps and Hollow Sets" that can be used for general screw fastening and fastening with hex wrenches. Cap screws (in the case of steel) are hardened screws with high tensile strength. Hollow sets (in the case of steel) are also hardened and are used embedded without a head. Both are fastened using a hex wrench. 【Lineup】 ■ Cap Screws ■ Low Head Caps ■ Hex Socket Button Bolts ■ Hex Socket Flat Bolts ■ Hollow Sets (with recessed tip, flat tip, pointed tip, rod tip, double point) and more *For more details, please refer to the PDF materials or feel free to contact us.

• nut
• bolt

Yamazaki Corporation handles "drill screws" that can be used for attaching parts to steel frames and similar materials. The tip is designed as a drill, allowing it to create a pilot hole when screwed in with power tools, and then, through its tapping structure, it can cut threads while being screwed in, enabling secure fastening. This is recommended for those who want to attach parts on-site with a precise fit. 【Product Lineup】 ■ Piercing ■ Piercing Color Cap ■ Tex ■ Other Drill Screws *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. offers "washers" that can be used for securing the stability of screw seating surfaces and preventing loosening. We provide various types, including "flat washers" used to ensure stability during screw fastening, as well as "spring washers" and "cup springs" that provide anti-loosening effects. 【Product Lineup】 ■ Flat Washers ■ Spring Washers ■ Taper Washers ■ Nord-Lock Washers ■ Cup Springs, etc. *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. handles "knob screws" that can be used in areas where screws are frequently loosened or tightened. The structure is designed to fit comfortably in your fingers for manual tightening. Wing bolts are commonly used. We also offer "Yuriya decorative screws" that come with pre-attached resin knobs. 【Lineup】 ■ Yuriya screws ■ Knob bolts ■ Thumb knobs ■ Wing bolts ■ Wing nuts *For more details, please refer to the PDF materials or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. handles "nuts" suitable for fastening parts. The hex nut type 1 is the most commonly distributed nut. Type 3 is a thin hex nut, and the bag nut has a cover on one side, serving a waterproof purpose. In addition, there are various shapes depending on the application. 【Lineup】 ■ Hex nuts (type 1, type 2, type 3) ■ Small hex nuts ■ Bag nuts ■ Square nuts ■ Plate nuts, etc. *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. handles "plastic screws" that can be used in equipment related to pharmaceuticals and food. The characteristic of plastic is that it does not rust, and various types of plastic are used depending on the application. The chemical resistance and other properties vary by type. 【Product Lineup】 ■ Small screws made of polycarbonate, LCP, and PEEK ■ Round washers ■ Small screws made of PPS ■ Hex bolts ■ Cap screws ■ Bolt covers ■ Nut covers *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. handles "anchor bolts" that can be used for fixing equipment to installation surfaces with screws or for installing fences. All anchors, also known as post-installed anchors, are used when you want to install anchors into concrete that has already been poured. You drill a hole with a concrete drill and then drive the anchor into that hole. 【Product Lineup】 ■ All Anchor ■ Grip Anchor ■ C-T Anchor ■ Chemical Anchor ■ Concrete Drill ■ Concrete Screws *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. handles "small screws" that can be used for assembly with a driver. They are used in areas where the nominal diameter of the screw is relatively small compared to bolts. The driver slots include cross, slotted (flat), and Phillips (±), and there are various types of materials and surface treatments available. 【Lineup】 ■ Pan, flat, truss, round flat, bind, and upset small screws *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. handles "micro screws" that can be used in precision instruments and small devices. These are small screws with diameters ranging from M1.0 to approximately M2.6. There are pan heads and flat heads, each available in type 1 and type 3 based on the head shape. Recommended for those looking to miniaturize their equipment. 【Lineup】 ■ No. 0 small screws ■ P type ■ B type *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. handles "tapping screws" that can be used for metal and plastic devices. There are types A, B, and C for the screw section. For types B and C, we offer further variations with and without grooves: B-0, B-1, C-0, and C-1. The head types include pan, flat, truss, round flat, and bind. 【Product Lineup】 ■ Tapping screw type A ■ Type B (with grooves, without grooves) ■ Type C (with grooves, without grooves) ■ With guide *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. offers 'Sankotite, high-tech screws' that can be used for metal and resin devices. The screw shape is designed to reduce the screwing torque. It features characteristics such as low generation of cutting chips, high holding power, and resistance to loosening. Additionally, various types are available on the market, and product names may differ by manufacturer. 【Lineup】 ■ Sankotite (S type, B type, P type) ■ Taptite (S type, B type, P type) *For more details, please refer to the PDF materials or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. offers "tamper-proof screws" that can be used for equipment that should not be disassembled. There are types such as TRX tamper-proof screws with a pin in the center of a standard Torx (TRX), which have a special recess (driver hole) that makes them difficult to loosen, thus being used as anti-theft screws. 【Product Lineup】 ■ Pin Hexagon Hole ■ TRX Tamper-Proof ■ Two-Hole ■ Tri-Cle *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd. handles "construction and woodworking screws" that can be used for wooden furniture, hardwood, gypsum board, and more. In cases where strong fastening is required with hardwood, hex coach screws are used instead of traditional wood screws. There are also many screws specialized for various applications available from different manufacturers. 【Product Lineup】 ■ Pan, flat, and round head wood screws ■ Hex coach screws ■ Light gauge screws ■ Course thread screws ■ Lag screws ■ Eye bolts *For more details, please refer to the PDF materials or feel free to contact us.

• nut
• bolt

Yamazaki Co., Ltd., which sells screws and general machine tools, manufactures special screws, sells transmission parts, and performs machining, introduces measures against screw loosening. There are methods such as applying screw locking agents yourself, requesting a professional service to apply screw locking agents, and using products that exhibit locking effects. Please feel free to contact us if you have any questions. 【CASE 1: Applying screw locking agent yourself】 It requires some effort to apply, but you can try it immediately. There are high-strength, medium-strength, and low-strength options, so you can choose according to your application. <Commercially available screw locking agents> ■ Loctite (Henkel) ■ Loctite stick type (Henkel) ■ ThreeBond screw locking agent ■ Scotch-Weld (3M) *For more details, please refer to the external link page or feel free to contact us. *The downloadable PDF materials are a digest version of our business introduction materials and the comprehensive catalog of screws we handle.

• nut
• bolt
• others

We recommend the "Large Diameter Hexagon Socket Bolt Strength Class 12.9" for molds and industrial machinery. Traditionally, for domestic products, hexagon socket bolts with a diameter exceeding M20 were available only in strength class 10.9. Therefore, when a strength class 12.9 bolt was absolutely necessary, it had to be custom-made, resulting in increased costs. However, thanks to the products from YFS, a Taiwanese screw manufacturer, we can now maintain a constant stock of strength class 12.9 hexagon socket bolts with nominal diameters of M22, M24, and M30 in Japan, greatly improving availability. We encourage you to consider this option. 【Product Lineup】 ■M22 ■M24 ■M30 *For more details, please refer to the PDF document or feel free to contact us.

• bolt

Are you having trouble with small lot processing of mechanical parts such as gears and pulleys used in research, development, and hobbies (shaft holes, keyways, taps)? We can respond quickly with the ease of a screw dealer, not a specialized manufacturer, through our in-house capabilities and partner factories. We purchase standard parts from manufacturers like KHK, Kyouiku Gear, Mitsuboshi, and Tsubakimoto, and perform additional processing (shaft holes, keyways, taps). We also offer surface treatment after processing. Please contact us for information about the manufacturers we handle. We also manufacture custom gears. 【Features】 ■ Quick response through in-house capabilities and partner factories ■ Additional processing on standard parts purchased by us ■ Surface treatment after processing ■ Custom gears also available *For more details, please refer to the external link page or feel free to contact us. *The downloadable PDF materials include our business introduction and a digest version of the comprehensive screw catalog we handle.

• Processing Contract
• gear
• others

Yamazaki Co., Ltd. offers "screw conversion adapters." When fastening two parts with screws, there may be differences in the screw standards used due to different manufacturers. In such cases, you can use a screw conversion adapter to change the screw standard and ensure a secure fastening. There are various types of standard screw specifications, but we provide metric coarse thread conversion adapters as standard specifications. Additionally, we can also manufacture conversion adapters for other types of screws or between different standards, so please feel free to consult us. 【Lineup】 ■ Male-Male Type (Brass) ■ Male-Female Type (Brass) ■ Male-Male Type (SUS304) ■ Male-Female Type (SUS304) *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• nut
• bolt

At Yamazaki Co., Ltd., we accept orders for screw manufacturing and additional processing. Are you having trouble with screw processing for research, development, or hobbies? We can respond with short lead times thanks to our in-house capabilities and partner factories. If you send us your drawings, we will provide a quote. Hand-drawn sketches are also acceptable. We accept orders starting from just one piece. Additionally, additional processing of commercially available screws may be more cost-effective. We will review your drawings and suggest more economical manufacturing methods. Please feel free to consult with us. 【Examples of New Screw Manufacturing】 ■ Screw pitch conversion ■ Special size bolts ■ Stud bolts ■ Special head bolts ■ Fine hex bolts *For more details, please refer to the PDF materials or feel free to contact us.

• Other machine elements
• nut
• bolt

Our company provides solutions for your screw-related issues through "screw coating and surface treatment." Iron screws are prone to rust in their natural state, so they are often used with surface treatments applied, which can also serve decorative purposes. Additionally, while many screws with various surface treatments are already available on the market, we can perform surface treatments even if they are not commercially available. Please feel free to contact us. 【Features】 ■ Supports surface treatments such as electroplating, electroless plating, hot-dip galvanizing, chemical conversion, heat treatment, painting, and coating. ■ Can substitute traditional plating with environmentally friendly options (e.g., alternative to unichrome: electro-galvanized with trivalent chromium chromate treatment). ■ Supports decorative plating such as chrome plating, tin-cobalt plating, gold plating, and substitute gold plating. *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt
• Surface treatment contract service

The "YFS manufactured hexagon socket bolt" is a thick diameter bolt with a strength classification of 12.9. Available sizes include "M22," "M24," and "M30." The "M36 size (cold forged)" can also be ordered upon request. It is particularly recommended for users in the mold and industrial machinery sectors. 【Features】 ■ High-strength thick diameter ■ Strength classification 12.9 ■ Available sizes: M22, M24, M30 ■ M36 size also available upon request ■ Recommended for users in the mold and industrial machinery sectors *For more details, please refer to the PDF document or feel free to contact us.

• bolt

"Sea Horse Lock" is a locking treatment that applies a locking liquid to screws. Since it is delivered after application, it does not incur labor and costs associated with manual work, allowing for immediate fastening. Because it can be uniformly applied by machine, it prevents loosening accidents caused by uneven application or missed spots, enhancing safety. Additionally, it is custom-made, allowing for specification of color and range. There are two types: the "Resistance Type," which mixes resin and other materials with the locking liquid to exert a high locking effect through resistance with the screw part, and the "Adhesion Type," which creates an adhesive effect through the chemical reaction between microcapsules and a hardener. 【Features】 ■ Delivered after application, allowing for immediate fastening ■ Uniform application by machine ■ Custom-made with options for color and range, making management easier ■ Two types: "Resistance Type" and "Adhesion Type" *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• bolt

The anti-loosening treatment "Seahorse Lock" can be broadly divided into two types: "Resistance Type" and "Adhesion Type." The "Resistance Type" primarily mixes resins and other materials into the anti-loosening liquid, providing excellent elasticity and demonstrating a high anti-loosening effect due to resistance with the screw part. The "Adhesion Type" contains microcapsules within the anti-loosening liquid, which rupture under the pressure of tightening the screw, triggering a chemical reaction with the hardening agent outside the microcapsules, resulting in an adhesive effect. As a result, the anti-loosening agent pre-applied to the screw firmly adheres to the counterpart through the adhesive, effectively preventing loosening. 【Features】 ■ Resistance Type - Suitable for situations where strong adhesive effects can be counterproductive or for preventing the loss of adjustment screws. ■ Adhesion Type - Adhesion effect is stable for 3 days. - Excellent sealing properties. *For more details, please refer to the PDF document or feel free to contact us.

• bolt
• Processing Contract

This document introduces the "Screw Conversion Adapter Ver.5." It has been updated to the revised version Ver.5. Using screws with different standards can lead to issues where the screws do not fit due to differences in standards or pitch. Forcing the screws can damage the threads. In some cases, screws with different standards may fit together, but there can be significant play, leading to loosening or falling out during use, which is very dangerous, and such usage should be avoided. Here, we also provide reasons why a screw conversion adapter is necessary. [Contents] ■ Reasons for needing a screw conversion adapter ■ Screw conversion adapter (metric coarse thread) male-male type standard specification ■ Screw conversion adapter (metric coarse thread) male-female type A standard specification ■ Screw conversion adapter (metric coarse thread) male-female type B standard specification ■ Screw conversion adapter (metric coarse thread) female-female type standard specification *For more details, please refer to the PDF document or feel free to contact us.

• bolt