Tel：
+86 13143444311
Email：sst@szsst88.com
Fax：+0086-755-27322278
Address：Building 9, First Industrial Zone, Tantou Industrial City, Songgang Street, Baoan District, Shenzhen 518105, Guangdong, China
Type:Aluminium Phillips flat (countersunk) screw, anodized
Materials:Aluminum
Surface treatment:Anodized (red, gold, blue, green, purple, orange)
Head Type:Flat (countersunk) head
Drive type:Phillips
Thread:Machine thread
Forming:CNC turning from bar
Number:1835
We manufacture aluminium Phillips flat screws in anodized colours — red, gold, blue, green, purple and orange — with a countersunk head that sits flush and a Phillips recess for a standard PH driver, from M2 to M8, turned from bar and anodized as a batch with a colour reference. Head angle, recess size, thread class and colour are made to your drawing and sample.
Watch the factory video·Email sst@szsst88.com
ISO 9001:2015 · Manufacturing since 1998 · 8,678+ customers · 89 countries and regions
Made to order – there is no stock catalogue. Each part is produced to your drawing, and production starts after drawing review and first-article approval.
A Phillips flat screw is a machine screw with a countersunk head and a Phillips cross recess, so the head pulls into the panel until it is flush and the driver self-centres as it turns. The version on this page is made in aluminium and anodized in colour, which is why it is chosen on assemblies where the screw is meant to be seen.
Flat head, flush line. The head has a conical underside that has to match the countersink in the panel. Match the angle and the head disappears into the surface; mismatch it and the head sits proud on one side, marks the panel, and never looks flush however hard it is driven.
Phillips recess. The cross recess centres the driver and cams out at a set torque, which protects small screws from being over-driven. On an aluminium Phillips flat screw the recess is cut with a Phillips punch, and the matching PH driver is what keeps the cross from rounding.
Aluminium and anodizing. Aluminium gives a light part that takes an anodic colour layer, and the layer is part of the metal rather than a paint film on top. That is what allows red, gold, blue, green, purple and orange parts to keep a colour through handling, while the thread and the recess still have to gauge after the process.
Together these decide how the part behaves on site: it sits flush, it matches the colour of the panel it closes, and the recess survives repeated assembly with the right driver.
Anodizing grows an aluminium oxide layer out of the surface itself, then dyes and seals it. On a Phillips flat screw that matters in two ways: the colour is part of the part rather than a film that can chip off a head edge, and the oxide layer changes the dimensions of the thread and the recess by a few microns.
The colour is matched to a sample under agreed light. Anodized batches shift with the alloy, the bath and the dye lot, so a red Phillips flat screw from one run can sit a shade away from the next. The drawing or the colour sample fixes the acceptance range, and the batch is checked against it rather than against a screen image.
Masking and threads. Where the screw has to assemble freely, the thread can be masked before anodizing or the oxide is allowed to build and the thread is gauged over it. Either way the thread class is read after the colour process, because an anodized thread is not the same size as the machined thread that went into the bath, and the mating part is made to the anodized size.
Handling colour. Anodized surfaces mark with handling and with hard contact. Parts are packed so the heads do not rub, and the first part off the line is kept as the colour reference for the batch.
Phillips flat screws are quoted from M2 to M8 and up to 100 mm, with length usually held to +/-0.1 mm on the drawing. Where a long version is required, custom lengths up to 2,000 mm are subject to DFM review after drawing submission.
| Item | How it is defined | What we control |
|---|---|---|
| Total length | From the top face of the flat head to the tip | Datum stated on the drawing; length measured on the shop plate |
| Head diameter and angle | The cone that must match the panel countersink | Head angle and diameter checked against the countersink |
| Phillips recess size | The cross that takes the PH driver | Recess cut to the PH size and checked with the bit |
| Thread size and length | Machine thread into the tapped part | Thread gauged after anodizing |
| Colour | Anodized colour against the accepted sample | Colour checked under agreed light per batch |
Each diameter and length combination is checked against the drawing before a quotation is issued. On an aluminium Phillips flat screw the head angle and the countersink are a pair, and the check confirms that the panel and the screw will sit flush together.
Length is measured from the top face of the head, and the thread length is read as a position from the same datum. Head angle, recess size and thread class are gauged after anodizing, in the condition the customer assembles.
For a Phillips flat screw the drawing fixes six things: thread size and pitch, thread length, total length and its datum, head diameter and angle, Phillips size, and right- or left-hand direction. A seventh line matters on aluminium: the torque the joint will be driven to, because aluminium threads strip earlier than steel ones of the same size. The drawing states the driver size too, since a PH bit that is one size up will round the cross before the joint reaches torque.
| Parameter | Why it matters on an aluminium screw | What we control |
|---|---|---|
| Thread start position | It sets how much plain shank sits under the head | Start dimension checked on the first article |
| Thread class | Anodizing changes the thread by a few microns | Thread gauged after anodizing |
| Head angle | The head must sit flush in the panel countersink | Angle checked against the countersink |
| Driving torque | Aluminium strips at lower torque than steel | Recess size and thread form checked against the joint |
Anodizing is the finish on these screws, and the colour is part of it. The oxide layer is grown from the aluminium, dyed and sealed, so the head, the countersink and the recess all carry the same colour without a paint edge to chip at the head rim.
| Finish | How it protects | Effect on thread and recess | Typical use |
|---|---|---|---|
| Anodized colour (red, gold, blue) | Oxide layer dyed and sealed | Thread builds a few microns; gauged after anodizing | Visible screws on coloured panels |
| Anodized black | Oxide layer, black dye | Same build-up; gauged after anodizing | Black enclosures and chassis |
| Clear anodized | Oxide layer, no dye | Same build-up; gauged after anodizing | Parts that keep the metal look |
| Anodized plus seal | Dyed oxide with a sealing step | No further dimensional change | Parts handled in service |
| Zinc plated (steel) | Sacrificial zinc layer | Thicker build-up on thread | Steel equivalents where colour is not required |
Salt-spray exposure is agreed per project and written on the drawing; anodized aluminium is tested in the condition it ships in. Colour is checked against the accepted sample on every batch under agreed light, because a colour shift is the defect that shows first on a visible screw.
Packing protects the anodized heads. Screws are packed in layers with the heads up, so the colour surface does not rub, and the label carries the batch, alloy and colour reference.
Three assembly conditions where an aluminium Phillips flat screw closes a panel flush and shows its colour, and what it has to do instead:
Audio and electronic enclosures
|
Audio chassis – screws on a brushed aluminium panel |
PCB and light-weight sub-assemblies
|
PCB stacks – anodized hardware on standoffs |
Kiosks and equipment trim
|
Kiosks – flush anodized screw in a brushed trim panel |
Four reasons that matter specifically on a Phillips flat screw, each tied to what the drawing has to prove:
|
Engineering review before the bar is cut
Head angle, recess size, thread and colour reference are settled before the first bar is cut, so the first sample is measured against the drawing and the colour card, not against a guess. Basis: Drawing and colour sample reviewed before production. |
Turned and anodized in one flow
The head, countersink and thread are produced on the turning route, and the parts go to anodizing as a batch with the colour reference, so the thread class and the colour are read from the same run. Basis: Turning and anodizing recorded per batch. |
|
Thread and recess gauged after anodizing
The thread is gauged after anodizing and the recess checked with the PH bit, so the screw that arrives can be assembled without re-cutting the thread. Basis: Thread and recess gauged in the anodized condition. |
First article to repeat production
The first article fixes the drawing revision, alloy, turning set-up and colour reference; repeat orders are compared against that record. Basis: First article and colour sample signed off before the batch. |
These Phillips flat screws are turned from aluminium bar. The bar is cut to length, the countersink and head are turned, the thread is produced, and the parts go to anodizing as a batch with the colour reference. The operator checks the first parts of each run against the drawing before the batch continues.
Material checked before the bar is cut |
Threads gauged after anodizing |
Between runs the lathe is set to the drawing head angle and thread size; the first part goes to the gauges before the run continues, and the setting is recorded. Anodized parts are checked again after the bath, so the record covers both the machined and the coloured condition.
What decides whether a Phillips flat screw passes is not its colour alone: it is the head sitting in the countersink, the recess taking the PH driver, the thread matching the tapped part after anodizing, and the colour matching the accepted sample. The inspection agreement covers all four.
Thread gauging after anodizing |
Head angle and recess profile on the projector |
Hardness testing of the aluminium alloy |
Salt-spray testing of the anodized finish |
Each batch is recorded against the drawing revision: head angle from the first article, the recess checked with the PH bit, the thread gauged after anodizing, and the colour checked against the sample under agreed light. If a gauge or the colour check fails, the parts back to the last good setting are held and re-checked.
Where a third-party report is required for the alloy or the anodized finish, it is listed on the drawing so the paperwork ships with the parts, and the batch number on the label matches the record used for the gauge.
Every Phillips flat screw shipment is traceable to the aluminium bar it was made from. The alloy, heat or lot number and standard are recorded on the material certificate supplied with the parts, and the inspection records follow the criteria agreed on the drawing.
ISO 9001:2015 |
RoHS test report |
Registered trademark |
Patent: security screw and driver |
With each batch we supply the material certificate, the inspection record for the criteria on the drawing and, where it is listed, the third-party report for the alloy or the finish. The documents carry the drawing revision and the batch number, so the paperwork can be matched to the parts.
More than 8,678 customers in 89 countries and regions have ordered from Shi Shi Tong; 87% of orders come from repeat customers and 56% through referrals. Most projects follow the same route: drawing review, first-article approval, then batches checked against that sample. Colour-critical parts are approved on a physical sample rather than a file. Buyers visit during the process to review samples and to see the turning and anodizing steps their parts will go through.
|
8,678+
customers served
|
87%
of orders from repeat customers
|
56%
of orders through referrals
|
89
countries and regions shipped to
|
Buyers and quality engineers visit for sample review, process discussion and supplier audits; the visit is arranged around production so the turning cells and the anodizing line can be seen on the day the parts run.
Customer group visit – sample review |
Customer group visit – process discussion |
Customer group visit – factory tour |
Customer visit – project kick-off |
Danish customer – drawing review |
Industry exhibition – meeting customers |
It is a machine screw with a countersunk (flat) head and a Phillips cross recess. The head pulls into the panel countersink until it is flush, and the cross recess centres the driver and cams out at a set torque.
Aluminium is lighter and takes an anodic colour layer that becomes part of the surface. It is chosen where the screw is visible and its colour is part of the design, or where weight matters.
Yes. The anodic layer grows by a few microns on the thread and in the recess, so the thread class is read after anodizing and the recess is checked with the PH bit in the same condition.
Phillips flat screws are quoted from M2 to M8 and up to 100 mm, usually held to +/-0.1 mm. Where a long version is required, custom lengths up to 2,000 mm are subject to DFM review after drawing submission.
The colour is matched against an accepted sample under agreed light. Anodized batches shift with alloy, bath and dye lot, so the sample and the acceptance range are fixed before production.
Thread size and pitch, thread length, total length and datum, head diameter and angle, Phillips size, alloy, anodized colour and finish, and quantity.
How a Phillips flat screw project runs from drawing to repeat delivery:
|
1
Send the drawing or sample
|
→ |
2
DFM review and quotation
|
→ |
3
First article approval
|
→ |
4
Batch production and repeat orders
|
Each step is confirmed with you before the next one starts; the drawing revision from the first article is what repeat orders are checked against.
For a Phillips flat screw quotation, send the drawing with thread size and pitch, thread length, total length and datum, head diameter and angle, Phillips size, alloy, anodized colour and finish. Head, recess and colour are confirmed with you before production.
|
Thread size and pitch
|
Thread length
|
Total length and datum
|
|
Head diameter and angle
|
Phillips size
|
Alloy, colour and quantity
|
Sending a drawing? The form below does not take attachments. Email the PDF, DXF or STEP file to sst@szsst88.com with the part name and quantity in the subject line – the drawing is reviewed and a quotation follows.
+86 13143444311
sst@szsst88.com
