B2B product specification
Black Knurled Round-Head Thumb Screw
This black knurled thumb screw combines a cylindrical hand-grip head, textured perimeter and fully threaded blunt shaft for tool-light adjustment in a confirmed mating thread.
- Cylindrical knurled hand-grip head
- Fully threaded blunt shaft shown
- For a confirmed nut, insert or tapped hole
- Thread pitch and dimensions can be customized
- MOQ starts at 10,000 pcs per confirmed specification
Quick contact: WhatsApp · sharon@hkhomeideas.com
Product Overview
This black knurled thumb screw is designed for manual clamping, positioning or panel adjustment where a round textured head supports finger grip. The photographed shaft is fully threaded with a blunt end, so the mating nut, insert or tapped hole must be defined before approval.
For a B2B quotation, provide the thread diameter and pitch, shaft length, grip diameter, grip height, mating feature, required adjustment cycle, material, black finish, quantity and pack format. Trial the black knurled thumb screw in the actual fixture or equipment panel before bulk production.
Procurement note: Specify thread diameter and pitch, shaft length, grip diameter and height, mating thread, adjustment cycle, material, black finish, quantity and packaging.
Technical Specifications
| Product Type | Black knurled round-head thumb screw |
|---|---|
| Material | Confirm according to drawing, sample or purchase specification |
| Finish / Surface Treatment | Black appearance shown; confirm coating system, color sample and service environment |
| Diameter | Confirm according to drawing, sample or purchase specification |
| Length | Confirm according to drawing, sample or purchase specification |
| Head Type | Cylindrical round hand-grip head with knurled perimeter |
| Drive Type | Manual finger grip; confirm any auxiliary drive feature if required |
| Thread Type | Fully threaded shaft shown; pitch can be customized to the customer requirement |
| Point Type | Blunt end shown |
| Standard | Confirm the dimensional standard, tolerance class and edition in the purchase specification |
| Application | Fixture clamps, equipment panels, guards and adjustable brackets with a confirmed receiving thread |
| Packaging | Bulk cartons, counted packs or adjustment-hardware kits |
| MOQ | 10,000 pcs per confirmed specification |
| Sample Availability | Discuss after thread, grip geometry, mating feature and finish are confirmed |
| OEM / ODM | Thread, shaft length, grip dimensions, material, finish and packaging can be customized |
Dimensions or performance requirements that vary by order should be confirmed according to the approved drawing, sample or purchase specification.
Applications
Fixture clamps
Confirm the tapped feature, clamping travel, contact condition and required hand clearance.
Equipment access panels
Check the receiving insert, panel stack, retention method and service frequency.
Adjustable guards
Define adjustment range, vibration condition, locking method and surrounding clearance.
Tool-light hardware kits
Match the thumb screw with the specified nut or insert and control the pack count and label.
Buyer Guide: How to Choose
How is thread size selected?
Match diameter, pitch and tolerance to the actual nut, insert or tapped hole; do not identify pitch from appearance alone.
What grip dimensions are important?
State head diameter, head height, knurl pattern, finger clearance and any maximum envelope around the assembly.
Can it be used for repeated adjustment?
Provide the expected adjustment cycle, load direction, mating material and retention requirement so a representative trial can be agreed.
How should the black finish be specified?
Define the coating system, color reference, service environment and agreed appearance or performance checks.
Quality Control
Inspection scope should be agreed against the approved drawing, sample and purchase specification. For screws, the review focuses on dimensions, thread, drive fit, finish and assembly performance.
Thread and shaft dimensions
Gauge the confirmed diameter and pitch and check shaft length and usable engagement against the approved drawing.
Knurled grip geometry
Inspect grip diameter, height, concentricity, knurl coverage and sharp-edge condition.
Head-to-shaft alignment
Check runout, joint integrity and visible damage at the head and threaded shaft transition.
Mating-thread trial
Assemble the part with the specified nut, insert or tapped hole and verify travel and seating.
Finish and packing
Compare black appearance with the approved sample and verify count, labels and carton identification.
If salt-spray, torque, pull-out or another performance test is required, include the test method and acceptance criteria in the RFQ for feasibility review.
Packaging & Customization
JH Fix can review this screws product as an individual component or as part of a matched OEM hardware kit. MOQ starts at 10,000 pcs per confirmed specification; final feasibility and lead time depend on the approved product and pack design.
Bulk cartons
For production lines, distributors and scheduled replenishment.
Small poly bags
Counted packs for furniture assembly or project delivery.
Blister or box packs
Retail-ready formats subject to confirmed pack design.
Private labels
Barcode, label and instruction-sheet requirements can be reviewed.
Mixed hardware kits
The selected part and compatible fasteners can be quoted as an assembly kit.
Frequently Asked Questions
Is the black knurled thumb screw intended for hand tightening?
Yes. The round textured head is intended for finger grip, subject to the confirmed clamp load, adjustment cycle and assembly trial.
Is Grade 8 material confirmed?
No. Material grade and mechanical requirements must be confirmed according to drawing, sample or purchase specification.
Can thread pitch, shaft length and grip size be customized?
Yes. Send the mating thread and required envelope. MOQ starts at 10,000 pcs per confirmed specification.
Does it screw directly into plain sheet metal?
The photographed part has a blunt machine thread. Use a confirmed nut, threaded insert or tapped hole unless another receiving method is approved by trial.
Can a retention feature be added?
A captive, shoulder or other retention concept can be reviewed from the assembly drawing and functional requirement.
What is needed to quote the black knurled thumb screw?
Send thread, shaft and grip dimensions, mating feature, material, finish, quantity and packaging. MOQ starts at 10,000 pcs per confirmed specification.
Related Products
- Black Ultra-Thin Wide-Head Machine Screw
- Silver Cross-Drive Low Pan Head Machine Screw
- M5 x 14mm Black Truss Head Machine Screw
Browse the Screws category, learn about JH Fix, or contact the team with a drawing or sample.
Need This Product Customized for Your Project?
Send the confirmed product specification so JH Fix can prepare a focused B2B quotation. For this category, include diameter, length, head, drive, thread, point and substrate.
- Product name and required size
- Material and finish
- Application and mating components
- Quantity and delivery market
- Packaging and private-label requirements
- Drawing or sample availability
- Company and contact details
- Inspection or testing requirements
Please do not send confidential drawings until the appropriate handling terms are agreed.
This black knurled thumb screw combines a cylindrical hand-grip head, textured perimeter and fully threaded blunt shaft for tool-light adjustment in a confirmed mating thread.
