Warning Spring Pull Pin with Hexagonal Clamping Knob, rest position, M16 x 1.5 x 19mm, D40, pin10
PW100F-4016191013
Safety pull pin, Indexing plunger, Locking pop pin
This distinctive safety indicator pin helps standardize lock-check procedures. Warning pull pin has a reminder function. This is a pull pin with a warning function. When the center pin is not properly inserted into the hole, the color circle at the top will be raised to alert the user. It can also keep pulling up without hand pulling continuously, which is convenient for users to adjust. The metal parts of the pulling pin are made by CNC lathe, so the small tolerance can reduce the wobble and make the 8mm center pin have higher load capacity. The threads are M16x1.5x40mm in accordance with Grade 2 threads. Other sizes and materials are also available to suit customer requirements. The hand-pulled part can be used as a knob to drive the screw to fasten the workpiece. This part is produced using a high tenacity nylon reinforced material and a matte, high quality design from a mold made by UJEN. No scratching, no sharp corners, no burrs, overall compliance with RoHS, REACH, SGS.
Function
UJEN Safety Locking Indexing Pins (Spring Pull Pins) with Rest Position are ideal for applications requiring frequent adjustments and rapid fastening. Simply pull the top knob and rotate it to the right to hold the pin in a fully disengaged rest position, allowing users convenient two-handed adjustment. After repositioning, directly rotate the knob back to re-engage—no additional pulling action required, enhancing ease and efficiency.
This indexing pin also features a clear visual safety indicator: if the pin is not properly inserted into the positioning hole, a colored indicator atop the knob pops up, and an orange warning ring on the screw is exposed, instantly alerting users to correct positioning immediately.
Additionally, these pins allow easy hand-tightening via the knob, securely clamping components to eliminate vibration or looseness without tools. Ideal for fitness equipment, medical devices, industrial machinery, furniture hardware, and more, UJEN pins deliver secure fastening with enhanced safety and convenience.
Features
- RoHS REACH compliant.
- Pull and release process smoother.
- Thread is class 2.
- Flame-proof, heat-resistant, anti-UV properties.
- The head knob has a matte finish.
- The head knob does not hurt hands, no sharp angles or burrs.
- The knob is easy to tight with a hand. the best design of beauty and grip.
- The metal is shiny and detailed.
- Zinc plated metal, stable corrosion resistance.
- The fitting tolerance between metal parts is small, reducing sway.
- The rounded corner of the Plunger's front end increases smoothness of insertion.
- The chamfered front end of the screw makes assembly smoother and reduces wear on the mating end face.
Dimensions

Thread Size
- M16 x 1.5
Thread Material
- Steel
Screw Length(mm/inch)
- 19 / 0.75
Plunger Diameter(mm)
- 10
Metal Finishing
- zinc plated with trivalent
External Diameter(mm)
- 37~40
External Height(mm)
- 49~52
External Material
- PA6+GF
External Shape
- Hexagon
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Warning Spring Pull Pin with Hexagonal Clamping Knob, rest position, M16 x 1.5 x 19mm, D40, pin10 | Achieve Ergonomic Efficiency with Adjustable Handles for Machinery
Based in Taiwan since 1994, UJEN DEVELOPMENT CO., LTD. expertise in manufacturing high-quality Warning Spring Pull Pin with Hexagonal Clamping Knob, rest position, M16 x 1.5 x 19mm, D40, pin10, hand screws, knob screws, adjustable handles, grip knobs, and indexing plungers. Their commitment to customization and precision ensures each component, from hand screws to indexing plungers, meets rigorous standards. This dedication positions UJEN as a leader in supplying durable and reliable industrial components to global markets.
UJEN Development Co., Ltd. is a leading manufacturer of precision-engineered hand screws, knob screws, plastic knobs, adjustable handles, and indexing plungers for a variety of industrial needs. Our 45-year legacy, combined with ISO 9001:2015 certification, underscores our commitment to quality, innovation, and customer satisfaction. Specializing in custom solutions, we excel in professional moldmaking, enhancing equipment functionality across industries.
UJEN has been offering customers high-quality hand screws for industrial machinery since 1994, both with advanced technology and 47 years of experiences, UJEN ensures each customer's demands are met.