塚由製作所 List of Products and Services

【Features】 ■Rivet ■Bag Nut ■Press Although it was requested as a single piece, we proposed to manufacture the bag nut and cut bolt as shown in the photo and create it through pressing. We made a dedicated jig, so it finished beautifully. If you have a request to incorporate a nut and want to prevent it from coming out, please feel free to contact us.

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【Features】 ■Stainless steel ■Bag nut ■Cut-off bolt Made from polished stainless steel material cut with a saw. It is intended to be used in combination with cut-off screws.

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【Features】 ■ Torque stamper ■ TRX tamper-proof roof ■ Pin button ■ Tamper-resistant ■ Security screws Material is stainless steel Screws used for tamper prevention.

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【Features】 ■Prototype ■High nut ■Press ■Rivet ■Screw Since the cut length has been completed, we will incorporate the high nut, press it down, and use it as a stop.

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【Features】 ■ High nut ■ Press ■ Riveting ■ Cut bolts ■ Prototyping We will use this for prototyping! We will combine the cut bolts and high nuts, and rivet them with a press.

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【Features】 ■ Hinge Pin ■ Flag Hinge ■ Rotating Pin ■ Guide Pin ■ Removable Hinge ■ Hinge Pin Purchased hex bolts and processed them. Cut and machined under fine thread rolling Finally, rolled to M8P1.0 For products with small quantities, we use standard items and manufacture them to your desired size. Please feel free to contact us.

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【Features】 ■Hex bolts ■Fine pitch ■Rolled ■Additional processing Hex bolts were purchased and processed. Cut and machined under fine pitch rolling. Finally, rolled to M8P1.0. For products with small quantities, we use standard items and manufacture them to your desired size. Please feel free to contact us.

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【Features】 ■Sash ■Window ■Shutter ■Step Rivet Stainless steel step rivet with center Finished as a step rivet after machining post-forging. Used as part of components around the sash.

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【Features】 ■ French drop ■ Rod stick ■ Drop stick ■ Round drop ■ Door ■ Sliding door ■ Side entrance This is a French drop rod stick. We received a custom order for a size larger than L size 1000mm and have delivered it. We manufacture rod sticks in sizes not available on the market, so please feel free to consult with us.

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【Features】 ■ Adjuster ■ Height adjustment ■ Base ■ Workbench ■ Vending machine ■ Control panel W3/8 adjuster bolt Used as a bolt for height adjustment.

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【Features】 ■Installation ■Temporary Assembly Used for installation and temporary assembly.

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【Features】 ■Hollow rivets ■Small lot sizes ■Secondary processing Due to the small lot sizes, we finished the hollow holes through secondary processing after forging. 12mm hollow rivets are not commonly available, so we receive many inquiries from customers. We can accommodate head shapes such as flat, thin flat, thin round, and countersunk. If you have any other shape or material inquiries, please feel free to consult with us!

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【Features】 ■ Upset ■ Embedded ■ Rolling ■ Sems Due to the long L dimension, automatic assembly is not possible, so each piece is manually assembled and rolled.

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【Features】 ■Wire Clip ■U-Bolt ■Elevator ■Wire Rope This is a U-bolt for a stainless steel wire clip. We produced it by coordinating with the customer's specification drawings and the processing capabilities of our company.

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【Features】 ■C-shaped ■Handle This product will have a C-shaped handle. Iron material is cut straight and then goes through the hole drilling and tapping process. After this, it will be bent into a C shape.

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【Features】 ■Rod tip ■Rivet ■Small screw After header processing, it is double-segmented and rolled. If you have products that require processing the rod tip with small screws, please feel free to consult with us.

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【Features】 ■ Welded screws ■ Welded bolts ■ Projection bolts These are welded screws used for agricultural tools and machinery.

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【Features】 ■Shaft ■Knurling Mass production of the prototype product. Different sizes have also been decided for horizontal expansion.

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【Features】 ■ Button bolt ■ Hex socket ■ Standard product ■ Custom-made screw ■ Special screw ■ Bolt These products are regularly ordered through Instagram! If you are looking for a standard-looking product with a special screw length, please feel free to consult with us.

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【Features】 ■Hinge ■Stainless Steel ■Knurled Pin ■Knurled Shaft Used as a pin for hinges. The processes are: Straight Cutting Pre-drilling Rolling Degreasing If you have any inquiries regarding hinge pins, hinge shafts, or grommets, please feel free to contact us.

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【Features】 ■Round Rivet ■Drilling ■Drill Press ■Standard Product Drilling holes for round rivets φ16. Purchase standard products and process them with a drill press. After this, they will undergo a zinc plating treatment.

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【Features】 ■Knurled shaft ■Shaft ■Child seat ■Bicycle ■Press-fit ■Resin Used as parts for bicycle child seats. Inspected for bends after plating and then packaged.

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【Features】 ■ Stainless steel pot small screws ■ Step small screws ■ Secondary processing ■ Rod end processing Header blank for M5 stainless pot small screws The tip will be processed into a rod end.

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【Features】 ■With knock ■Shaft ■Stepped shaft The knock part serves as a stop. This time, it was manufactured by cutting after forging and during the rolling process. If you have any issues with stepped bolts or stepped rivets, please feel free to consult us.

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【Features】 ■Rivet ■Hollow rivet ■Bending ■45C Material is 45C. It was machined using NC due to small lot size.

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【Features】 ■Rivets with steps ■Molds ■Small lots They were processed with a double header and the tips were cut. If the lot size increases, we will create molds using a multi-stage header, but since the lot size was small this time, we used this method of production. Please feel free to contact us if you are looking for stepped rivets.

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【Features】 ■ Rivets ■ Thin round rivets ■ Round rivets ■ Flat rivets These are rivets that are not standard products. If you have any inquiries about changing the head or L dimensions, please feel free to contact us. For rivets, we have material stock available in iron for sizes 4, 5, 6, 8, 10, and 12 millimeters. For other shaft diameters, materials will need to be ordered.

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【Features】 ■Business Closure ■Secondary Processing ■Drilling We perform secondary processing of high nuts. Consultations regarding equipment aging and business closures have been increasing significantly. We would like to respond to your requests as much as possible! Please feel free to consult with us.

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【Features】 Adjustment Bolt M16 Used as an adjustment bolt or an adjuster bolt. Manufactured from a hex bolt with full threading through additional processing. The shape of the tip resembles that of a main cable bolt.

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【Features】 We manufacture stepped bolts. For large production runs, we create molds for processing, but for smaller quantities, we produce them as shown in the photo by straight forging and machining the screw neck and rod tip. Since there are no mold costs, we can accommodate small lots. If you are considering stepped bolts, please feel free to contact us. We have produced them because the neck dimensions are not available in commercial products. The shaft diameter is 8 mm. If you have any issues with the neck dimensions or length dimensions, please feel free to contact us.

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【Features】 ■Rivet ■Round Rivet ■Drilling ■Commercial Products This was made because the neck length dimension is not available in commercial products. The shaft diameter is 8 millimeters. If you have any concerns regarding the neck length dimension or L dimension, please feel free to contact us.

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【Features】 ■Arrow hole ■Hexagonal hole ■Cap bolt The hexagonal hole is created through forging, and a pilot hole is drilled on the screw side to form the hexagonal arrow hole.

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【Features】 ■Rivet ■Flat Pin ■Cam Shaft ■Shaft ■Cam These are flat pins and rivets. They are used in the cam shaft. The size in the photo has a shaft diameter of 8 millimeters. Please feel free to contact us if you have a preferred size.

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【Features】 ■ Welded bolts ■ Welded screws This is a type of weld bolt with a protrusion on the top side of the head.

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【Features】 ■Equipment aging ■Brass ■Business closure ■Silk The purpose is unclear. Consultations regarding equipment aging and business closures have been increasing significantly. We would like to respond to your requests as much as possible! Please feel free to consult with us.

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【Features】 ■Aging of equipment ■Prototyping ■Mass production ■Vertical knurling This is a product that was brought to us due to aging equipment. The customer will conduct assembly verification and plans to proceed with mass production. I was concerned about how the vertical knurling in the middle would turn out, but it finished nicely.

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【Features】 ■ Denden Bolt ■ Joint ■ Track The size is W5/8. After forging, it proceeds through the processes of Pre-drilling Rolling Holding Drilling.

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【Features】 ■Drift Pin ■Reamer Punch ■Grinding These pins are used for the temporary assembly of steel frames. We received an inquiry from our company's website and manufactured them. Due to a very tight deadline, we processed existing products to finish them to the requested size. Please feel free to consult us about drift pins.

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【Features】 ■Brass ■Screws ■Rivets This is a product after several years. The purpose is unknown.

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【Features】 ■Drift Pin ■Wooden Houses ■Seismic Resistance ■Durability ■Housing Construction Method ■Design ■Log House You placed an order after visiting our website. It is said that the L size is not available in the market. If you are a contractor looking for drift pins, please feel free to contact us.

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【Features】 ■Shaft ■Polishing ■Right Angle It is finished with polishing after NC machining.

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【Features】 ■ Rod end processing ■ Re-rolling ■ Processing of standard products Hex bolts have been processed. Standard products were machined into rod ends through cutting, followed by drilling, re-rolling, and plating processes. If you have any requests for processing standard products, please feel free to contact us.

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【Features】 ■Drilling ■Pressing ■Drill press ■Denden bolt Denden rivet. The press shop I've been working with for a long time has gone out of business, so I had it pressed at another processing facility. I'm relieved that it was done according to the dimensions. After this, I will drill holes using the drill press.

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【Features】 ■Hexagonal Arrow ■Prototype ■Bolt This is a prototype. The purpose is unknown. It was manufactured by secondary processing of a flowing product. Header processing, trimming, cutting, hexagonal arrow punching, threading, and plating. The reason for processing the thread by cutting is that the thread length is very short. There were other points that needed attention, which were confirmed through the prototype.

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The SUS304J3 coil material was forged, drilled, and subjected to a passivation treatment. The photo shows a shaft diameter of 8 mm. If you have any size concerns regarding hole-punched rivets, please feel free to contact us. We can accommodate rivet sizes from 8 mm to 16 mm in iron. For stainless steel, the sizes range from 8 mm to 12 mm.

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