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+86 13143444311
Email：sst@szsst88.com
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Address：Building 9, First Industrial Zone, Tantou Industrial City, Songgang Street, Baoan District, Shenzhen 518105, Guangdong, China
Type:Titanium Chicago Screws
Materials:Titanium
Surface treatment:Black Oxide
Head Type:Truss Head
Drive:None on the recorded part; the pair is closed by hand
Grip:Grip range = male length plus barrel length minus engagement
Thread:Metric machine thread on the male; barrel tapped through before pairing
Point:Flat end on both halves; no point, no drill tip
Forming:Turned from bar, tapped, black oxide finished as a pair, sorted as matched sets
Size:M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M14
Number:259
We manufacture titanium chicago screws as a matched pair: a male screw and a female barrel with a truss head on each face, machined from titanium, finished black oxide and paired as a set. Both lengths, the grip range, head and barrel diameters are taken from your drawing.
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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.
Titanium chicago screws are two-part fasteners: a male screw and a female barrel that thread into each other, clamping a stack from both faces with a finished head on each side. The recorded item on this page is titanium with a black oxide finish and a truss head on both halves, quoted from M1 to M14 with Number 259.
Two halves, one fixing. The male half runs through the stack and threads into the barrel, and the barrel closes the far face. Nothing shows on either side except a head, which is what a chicago screw is for.
Truss head. A wide low dome with a full flat bearing face. It spreads load on leather, board and composites, and it reads as a flat disc rather than as a fixture.
Titanium. Light, strong and immune to the corrosion that ruins plated steel in wet or salty service. On a two-part fastener that weight saving matters twice, because both halves are titanium.
No drive on the recorded part. The heads carry no slot and no socket. Assembly is by hand, which suits a binding post: it sets the grip and stays set, and there is no tool mark on a finished head.
Black oxide. A dark conversion finish on the titanium, which keeps the tone of the pair consistent and stops the heads reading as bright metal on a dark assembly.
The male half is turned or headed with its truss head, then threaded. The female barrel is a separate part with its own head, drilled and tapped through from the open face, so the thread is cut into the barrel before the two halves are paired.
The truss head is formed with a full flat bearing face, which on a two-part fastener is the surface that clamps. Both halves carry the same head form, so the stack is closed evenly from both sides instead of being pulled towards one face.
The grip range is what defines the pair: the total thickness the two halves can clamp. It is the male length plus the barrel length minus the thread engagement at full closure, and it is quoted as a range because the same halves close over a span.
Both halves are finished together so the tone matches. On titanium that is done after machining, and because the film is a conversion layer rather than a deposit, the thread and the head faces keep their dimensions.
The parts are then paired and packed as sets. A chicago screw that arrives without its matching half is not a fastener, and on a two-part product the pairing is part of the specification.
The family is quoted from M1 to M14, with M1, M2, M3, M4, M5, M6, M7, M8, M9, M10 and M14 in the recorded range. Custom lengths up to 2,000 mm are subject to DFM review after drawing submission; on titanium chicago screws the two halves can be made in different lengths to cover a grip range rather than one thickness.
| Item | How it is defined | What we control |
|---|---|---|
| Male thread | Metric machine thread | Gauged per batch; paired where critical |
| Female thread | Tapped through the barrel before pairing | Gauged with the matching male |
| Head | Truss head, wide and low, both halves | Diameter and height on the projector |
| Barrel diameter | Outside diameter of the female half | Measured on the first article |
| Male length | From under the head to the end | Measured on the shop plate |
| Barrel length | From its head to the closed end | Measured on the shop plate |
| Grip range | Total thickness the pair clamps | Calculated from both lengths and engagement |
The grip range is the number the customer actually needs, and it is the one most often left off a drawing. A pair that is too short will not close on the stack; one that is too long leaves the male thread standing in the barrel without reaching the end, and the joint rocks.
The barrel diameter is the second number. It has to pass the clearance hole in the stack, and it sets how much material is left around the tapped thread — which on titanium, with its higher strength, can be less than on a steel barrel of the same size.
Titanium changes a chicago screw more than it changes a single screw, because the weight and the corrosion resistance apply to both halves.
| Feature | What it gives | What it costs |
|---|---|---|
| Titanium both halves | Roughly half the weight of a steel pair | Higher material cost; needs machining care |
| Corrosion resistance | No plating to fail in wet or salty service | Galling against itself; needs a dry film |
| Truss head both sides | Even clamp from both faces | Wider footprint than a pan head |
| No drive on the recorded part | Finished heads and a set grip | Assembly by hand only |
| Black oxide film | Dark tone on both halves | Thin; it is a colour, not a corrosion barrier |
The weight argument is the one that sells this part. A binding post is used on leather, on board and on display panels where the fastener is one of many, and a titanium pair halves the weight the assembly has to carry at every fixing. On a product that is carried and handled, that adds up. It is the first reason titanium chicago screws are chosen over a steel pair.
The corrosion argument is the one that keeps it in service. There is no coating to chip at a head edge and nothing to stain the material underneath. The limit is galling: titanium threads can seize against themselves, so a dry film on the thread is specified where the joint is opened more than once.
The recorded finish is black oxide on titanium, applied to both halves. It is a conversion film rather than a coating, so the thread and the head faces keep their dimensions and the tone is set by the film rather than by a deposit.
| Option | What it does | Effect on head and thread | Typical use |
|---|---|---|---|
| Black oxide | Dark conversion film on the titanium | No dimensional change | Dark assemblies |
| Plain, cleaned | No film; the alloy colour shows | No dimensional change | Visible titanium hardware |
| Anodised | Coloured oxide layer, harder surface | Thread growth; threads masked | Coloured display hardware |
| Bead blast | Matte grey face on the heads | Edges softened slightly | Non-reflective panels |
| Polished | Bright metal finish on the heads | No dimensional change | Jewellery and luxury fittings |
The choice is largely about how the head reads. Black oxide makes a pair disappear into a dark panel; plain titanium shows the alloy; anodising gives colour but has to be masked off the threads, because an anodised thread is a tighter thread.
What none of them do is act as a corrosion barrier, and on titanium they do not need to. The alloy does that job on its own, which is why the finish on this part is a colour decision rather than a protection decision. Titanium chicago screws are supplied matched so both faces read the same.
Three assemblies where a two-part fixing has to be light, finished on both faces and immune to corrosion:
| Where it sits | The pair binds layers of leather or heavy fabric with a head on the outside and a barrel closing the other face. |
| When it goes wrong | A steel pair rusts and stains the leather at the hole, and a pair that is too short will not close the stack. |
| Why it happens | The material is thick, both faces are seen, and the joint is opened occasionally. |
| What we control | Grip range and head diameter checked, both halves paired and matched for tone. |
| Where it sits | The pair holds a panel, a strap or a fitting on equipment that sees salt water, where a plated fastener would corrode at the head. |
| When it goes wrong | A plated pair corrodes under the head and stains the surround, and a heavy pair adds weight where it matters. |
| Why it happens | The joint is wet and salty, both faces are exposed, and the fixing is serviced. |
| What we control | Grade confirmed, finish checked for tone, threads paired and gauged. |
| Where it sits | The pair holds a panel or a frame where the fixing has to finish on both sides and the colour has to match the design. |
| When it goes wrong | A nut on the front face reads as unfinished, and a bright head breaks a dark panel. |
| Why it happens | Both faces are visible, the panel is thin, and the fixing repeats. |
| What we control | Head diameter and tone matched to the sample, grip range confirmed against the panel. |
Four reasons that matter on a two-part titanium fastener, each tied to what the drawing has to prove:
|
Grip range and pairing reviewed together
Both halves, their lengths and the engagement are reviewed as one set, so the grip range is quoted against the stack rather than discovered at assembly. Basis: Grip range quoted from both halves. |
Both halves made as a pair
The male screw and the barrel are made and finished together, and the threads are gauged as a pair where the fit is critical. Basis: Threads gauged as a pair. |
|
Grip and tone checked on the part
The pair is assembled onto a sample stack on the first article, and the tone of both halves is matched under the same light. Basis: First article assembled on a sample stack. |
First article to repeat production
The first article fixes the drawing revision, bar heat, program, tap and finish; repeat orders are compared against that record. Basis: First article signed off before the batch is released. |
Shi Shi Tong machines both halves of these titanium chicago screws: the male screw is turned with its truss head and thread, and the barrel is turned with its own head, drilled and tapped before the parts are paired. The pair is black oxide finished together and sorted as sets. The first pair of every run is assembled onto a sample stack and both halves matched for tone, before the batch continues. The same pair test applies to titanium chicago screws in every size in the range.
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Pairing is the operation that decides whether the fastener works. A male thread and a barrel thread that each pass their own gauge can still run tight as a pair, and because both are then finished, the fit cannot be corrected afterwards. That is why the two halves are gauged together on the first article and the pairing is recorded. Every batch of titanium chicago screws is released on that pair test.
What decides whether titanium chicago screws pass is the thread fit as a pair, the grip range, the head faces and the finish. The inspection agreement covers those, and the criteria come from the drawing.
Head profile on the projector |
Threads gauged as a pair |
Hardness testing of the bar stock |
Salt-spray testing where the service requires it |
The assembly test is the one that matters. The first pair is run onto a sample stack of the drawing thickness and closed by hand; a pair that reaches closure and holds the stack is a pass, and one that stops short or rocks has the wrong grip range, whatever the individual dimensions say.
The tone of both halves is checked under the same light, because a pair that is finished separately can come out a shade apart. On a fastener with a head on each face, that difference is visible from both sides. Titanium chicago screws are checked under one lamp for exactly that reason.
Every shipment of titanium chicago screws is traceable to the bar the two halves were made from. The grade and heat number 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 material. 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. On a two-part fastener the first article is assembled onto a stack of the drawing thickness, because the grip range is the dimension that decides the joint. Buyers visit during the process to review samples and to see how the halves are turned.
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8,678+
customers served
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87%
of orders from repeat customers
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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 finishing 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 |
A two-part fastener: a male screw and a female barrel that thread together, so a stack is clamped with a finished head on both faces.
Weight and corrosion. A titanium pair is roughly half the weight of a steel one and needs no coating to survive wet or salty service.
Quote both halves and the grip range — the total thickness the pair clamps. A single length is not enough, because the pair closes over a span.
Not on the recorded part. The truss heads carry no slot or socket, so the fastener is assembled by hand and the finished faces stay unmarked.
They can gall against themselves. A dry film on the thread is specified where the joint is opened more than once.
Thread size, male and barrel lengths, grip range, head diameter and height, barrel diameter, alloy grade and finish.
How a titanium chicago screw project runs from drawing to repeat delivery:
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1
Send the drawing and the stack thickness
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2
Grip range review
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3
First pair closed on a sample stack
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→ |
4
Batch production and repeat orders
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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 quotation, send the drawing with the thread size, male and barrel lengths, the stack thickness the pair has to clamp, head diameter and height, barrel diameter, alloy grade and finish.
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Thread size
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Male length
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Barrel length
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Grip range
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Head and barrel diameter
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Alloy and finish
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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
