#4-40 UNC Cup Point Set Screws - ODM Factory Custom Fasteners

We supply the #4-40 UNC Cup Point Set Screws for tight, vibration-free locking in fixtures and assemblies. For product customization, I offer ODM options to tailor thread length, drive type, finish, and coating to your exact spec, while keeping costs under control. Our Factory runs tight tolerances and quick machining, so you can rely on consistent grades and on-time delivery. The cup-point design provides even clamping force and minimizes damage to mating surfaces, making these screws ideal for tool holders, jigs, optical mounts, and small machinery. I keep stock in common finishes like zinc-plated steel and black oxide, with heat-treated options for higher torque retention. Whether you need a standard lot or a private-label program, I’ll support you from quote to shipment with clear documentation and testing data. If your team is sourcing for OEM projects or components, these #4-40 UNC Cup Point Set Screws fit your quality and price targets, and my team can align production to your schedule.

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#4-40 UNC Cup Point Set Screws Pioneers in the Field More Than a Supplier - A Partner

Hard-wearing and compact, #4-40 UNC Cup Point Set Screws deliver precise clamping for fixtures, optics mounts, and electronics assemblies. The cup point provides stable contact and even seating, translating into high torque transfer without marring surfaces. In the widely used 4-40 UNC thread, these fasteners integrate into countless designs, simplifying global procurement. This is more than a part: it’s a dependable partnership that ensures consistent quality, traceable processes, and reliable lead times across markets. Global buyers benefit from a partner who can tailor specifications and scale with demand. Material options include stainless steel, alloy steel, and hardened variants, with finishes such as black oxide or zinc plating. Custom lengths, head styles, thread depths, and tolerance reports can be provided with full traceability. With proactive logistics and technical support, you gain continuity for multi-site programs, even amid supply disruptions.

{ #4-40 UNC Cup Point Set Screws Pioneers in the Field More Than a Supplier - A Partner}

Part Number	Thread Size	Length (L)	Material	Finish	Head Style	Drive Type	Point Type	Hardness (HRC)	Tolerance	Grade	Treatments	Coating	Application	Origin	Production Year	Compliance
CPSS-4-40-01	#4-40 UNC	1/8 in	Stainless Steel A2-70	Bright Zinc Plating	Cup	Hex Socket	Cup	52-54	+/- 0.005 in	Grade 2	None	Zinc	Precision alignment	USA	2023	RoHS
CPSS-4-40-02	#4-40 UNC	1/4 in	Alloy Steel	Black Oxide	Cup	Hex Socket	Cup	46-50	+/- 0.005 in	Grade 5	Heat Treated	None	Machinery assembly	China	2022	RoHS
CPSS-4-40-03	#4-40 UNC	3/16 in	Stainless Steel A4-70	Passivated	Cup	Hex Socket	Cup	48-52	+/- 0.003 in	Grade 2	Passivation	None	Optical equipment	Germany	2024	RoHS
CPSS-4-40-04	#4-40 UNC	1/2 in	Alloy Steel	Zinc Plated	Cup	Hex Socket	Cup	50-56	+/- 0.005 in	Grade 3	Quenched and Tempered	Zinc	Automotive	Taiwan	2021	RoHS
CPSS-4-40-05	#4-40 UNC	3/16 in	Stainless Steel 302	Bright Zinc	Cup	Hex Socket	Cup	40-45	+/- 0.004 in	Grade 2	None	Zinc	Electronics enclosures	USA	2020	RoHS
CPSS-4-40-06	#4-40 UNC	1/8 in	Alloy Steel	Yellow Zinc	Cup	Hex Socket	Cup	45-50	+/- 0.006 in	Grade 4	Heat Treated	Zinc	General mechanical fastener	Mexico	2023	RoHS
CPSS-4-40-07	#4-40 UNC	5/32 in	Stainless Steel A2-70	Clear Passivation	Cup	Hex Socket	Cup	52-56	+/- 0.003 in	Grade 2	Passivation	None	Instrumentation	Japan	2023	RoHS
CPSS-4-40-08	#4-40 UNC	3/8 in	Alloy Steel	Black Oxide	Cup	Hex Socket	Cup	48-52	+/- 0.005 in	Grade 2	Stress Relieved	None	Precision machinery	India	2024	RoHS, REACH
CPSS-4-40-09	#4-40 UNC	1/16 in	Stainless Steel 304	Satin Chrome	Cup	Hex Socket	Cup	41-46	+/- 0.003 in	Grade 2	None	Nickel	Medical devices	Netherlands	2022	RoHS, REACH

Note: Measurements are typical ranges and may vary slightly by batch. All data shown are representative for planning and comparison purposes.

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#4-40 UNC Cup Point Set Screws Supplier Ahead of the Curve

Data Dimension: Application Segment Demand Distribution

This data dimension, titled "Application Segment Demand Distribution," visualizes the relative demand for a specific fastener family across six major end-use segments. The chart uses a straightforward bar representation to compare volumes, with Automotive leading and Medical trailing. While the numbers are illustrative, they reflect common industry patterns where transportation sectors drive high-volume requirements and regulated or specialized markets may show more modest demand. The Aerospace and Electronics segments appear with intermediate levels, suggesting steady, durable demand but with more variability due to design cycles and regulatory considerations. Industrial Machinery also contributes a meaningful share, highlighting ongoing maintenance and equipment manufacturing activities. Construction, although smaller, remains a relevant market due to the ongoing need for industrial infrastructure and project-based sourcing. The goal of this visualization is to provide a compact, segment-focused view of where demand originates, enabling supply chain planners to prioritize production capacity, inventory allocations, and sales outreach accordingly. By focusing on application segments rather than geography, the data emphasizes usage-based drivers such as product designs, compatibility requirements, and lifecycle replacement needs. For forecasting, adding a time dimension could reveal seasonality and model-year effects, helping to anticipate spikes and adjust procurement strategies in advance. Inventory policy can then balance service levels for high-volume segments with leaner approaches for segments with slower turnover. To gain deeper insight, the dataset could be enriched with subcategories like thread size, material grade, finish, and tolerance, revealing customer preferences and price sensitivity across segments. This approach supports better alignment between manufacturing throughput and demand, enabling a curve-aware strategy that reduces stockouts, lowers excess inventory, and improves customer satisfaction across end-use markets.

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jari dedenroth 2022.12.23 00:41:18
High production efficiency and good product quality, fast delivery and completed after-sale protection, a right choice, a best choice.
John biddlestone 2022.12.18 08:08:56
This company has the idea of better quality, lower processing costs, prices are more reasonable, so they have competitive product quality and price, that's the main reason we chose to cooperate.
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The factory workers have rich industry knowledge and operational experience, we learned a lot in working with them,we are extremely grateful that we can encount a good company has excellent wokers.
Cornelia 2022.12.13 02:36:59
This manufacturers not only respected our choice and requirements, but also gave us a lot of good suggestions, ultimately， we successfully completed the procurement tasks.
Ann 2022.12.09 08:08:52
The goods are very perfect and the company sales manager is warmful, we will come to this company to purchase next time.
Maggie 2022.12.02 14:51:39
The customer service staff is very patient and has a positive and progressive attitude to our interest, so that we can have a comprehensive understanding of the product and finally we reached an agreement, thanks!

Ray 2022.12.24 09:20:26

Good quality and fast delivery, it's very nice. Some products have a little bit problem, but the supplier replaced timely, overall, we are satisfied.
Aaron 2022.12.23 20:30:10

This supplier's raw material quality is stable and reliable, has always been in accordance with the requirements of our company to provide the goods that quality meet our requirements.
Roland Jacka 2022.12.20 11:10:46

This company can be well to meet our needs on product quantity and delivery time, so we always choose them when we have procurement requirements.
Edith 2022.12.16 20:57:11

It is really lucky to meet such a good supplier, this is our most satisfied cooperation, I think we will work again!
David 2022.12.15 09:12:59

Perfect services, quality products and competitive prices, we have work many times, every time is delighted, wish continue to maintain!
Philipppa 2022.12.11 04:42:18

We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.