Precision Shoulder Screws | UK Manufacturer
Shoulder screws are screws that usually consist of a head and a thread. However, unlike typical screws they also consist of an additional unthreaded “shoulder” in between. The shoulder has a larger diameter than the thread and has a very low tolerance which helps with the precise alignment of moving parts; the shoulder screw acts as both a fastener and a dowel/axel/guide.
If your assemblies demand accuracy, reliability, and components that simply don’t fail, you’re in the right place. Automotion Components manufactures one of the UK’s most advanced ranges of precision engineered shoulder screws — built for engineers who refuse to settle for generic hardware.
These aren’t “just screws.” They’re alignment tools, pivot points, precision guides, and load bearing components designed to outperform anything in their class.
Shoulder screws are screws that usually consist of a head and a thread. However, unlike typical screws they also consist of an additional unthreaded “shoulder” in between. The shoulder has a larger diameter than the thread and has a very low tolerance which helps with the precise alignment of moving parts; the shoulder screw acts as both a fastener and a dowel/axel/guide.
If your assemblies demand accuracy, reliability, and components that simply don’t fail, you’re in the right place. Automotion Components manufactures one of the UK’s most advanced ranges of precision engineered shoulder screws — built for engineers who refuse to settle for generic hardware.
These aren’t “just screws.” They’re alignment tools, pivot points, precision guides, and load bearing components designed to outperform anything in their class.
Our In-House range
Shoulder screws are screws that usually consist of a head and a thread. However, unlike typical screws they also consist of an additional unthreaded “shoulder” in between. The shoulder has a larger diameter than the thread and has a very low tolerance which helps with the precise alignment of moving parts; the shoulder screw acts as both a fastener and a dowel/axel/guide.
If your assemblies demand accuracy, reliability, and components that simply don’t fail, you’re in the right place. Automotion Components manufactures one of the UK’s most advanced ranges of precision engineered shoulder screws — built for engineers who refuse to settle for generic hardware.
These aren’t “just screws.” They’re alignment tools, pivot points, precision guides, and load bearing components designed to outperform anything in their class.
Shoulder Screw Options
Cap Head
New to our range, socket shoulder nuts in AISI 303 stainless steel. Also available in AISI 316 stainless steel.
Hex. socket shoulder screws in 303 series stainless steel. More variations available.
Hex. socket shoulder screws with thread sizes available in marine grade 316 series stainless steel (A4; suitable for outdoor/marine environments).
Hex drive, with Anu-Lok locking patch. Stainless steel (AISI 303, 1.4305). For Torx drive versions please see P0145.
Our popular cap head hex. drive shoulder screw is available in titanium (T2 and T5), too!
Cap head shoulder screws in 416 series stainless steel.
Tx head shoulder scre in 303 series stainless steel - also available in black.
Tx drive shoulder screw in marine grade stainless steel (AISI 316). Suitable for outdoor use.
Cap Head - Imperial
Our popular stainless steel shoulder screws are also available with imperial (inch) dimensions.
Our slotted stainless steel shoulder screws are also available with imperial (inch) dimensions.
Headless, Countersunk and Pan Head
Slotted head shoulder screws in AISI 303 stainless steel.
New to our range, socket countersunk shoulder screws in AISI 303 stainless steel.
New to our range, socket countersunk shoulder screws in AISI 316 stainless steel.
Stainless pan head shoulder screws. To DIN 923.
Also available in a zinc plated steel, to DIN 923; P0144.ZP.
Hex Socket and Slot Head
Steel shoulder screws in stock at our UK manufacturing facility.
Large shoulder screws with thread sizes M3 - M16 and shoulder lengths 4 - 140mm to meet ISO 7379.
Slot head shoulder screw in 416 series stainless steel (this is a martensitic s/s grade and is therefore magnetic - see our stainless steel technical information here).
Ultra Low Head
Low profile stainless shoulder screws in stock (click here to see range).
Low profile shoulder screws in marine grade stainless steel (AISI 316).
Black oxide coated, very low profile shoulder screws. Satinless steel AISI 303, suitable for pharmaceutical and other applications.
Black oxide coated, very low profile shoulder screws. Stainless steel AISI 316; suitable for marine and other applications.
Shoulder Bolts
See all steel shoulder bolts here - we manufacture these in construction grade 8.8 steel and high tensile grades 10.9 and 12.9 steel. Protective finishes and special sizes can be manufactured on request.
Stainless shoulder bolts available in small, standard and long sizes.
Material and Finishing Options
Materials in Detail
Steel shoulder screws
They are produced to ISO 7379 standards.
Thread sizes from Ø4 M3 to Ø24 M20.
We manufacture special shoulder screws to customer drawings with a minimum batch size.
Stainless steel shoulder screws
We have three different grades of stainless steel shoulder screws:
A2 series
Our are standard grade of stainless. They are strong and resistant to corrosion but not to very harsh environments such as salt water.
For standard sizes Ø6 M5 up to Ø16 M12, see our part no P0137. For miniature sizes down to Ø4 M3 see parts numbers P0130 and P0132.
416 series
These are made from harder stainless steel with improved shear strengths, but the parts are more prone to corrosion (see part no. P0131 and P0133).
A4 series
These shoulder screws (P0143) are very resistant to corrosion but are considerably more expensive than other stainless versions.
Steel shoulder screws
They are produced to ISO 7379 standards.
Thread sizes from Ø4 M3 to Ø24 M20.
We manufacture special shoulder screws to customer drawings with a minimum batch size.
Stainless steel shoulder screws
We have three different grades of stainless steel shoulder screws:
A2 series
Our are standard grade of stainless. They are strong and resistant to corrosion but not to very harsh environments such as salt water.
For standard sizes Ø6 M5 up to Ø16 M12, see our part no P0137. For miniature sizes down to Ø4 M3 see parts numbers P0130 and P0132.
416 series
These are made from harder stainless steel with improved shear strengths, but the parts are more prone to corrosion (see part no. P0131 and P0133).
A4 series
These shoulder screws (P0143) are very resistant to corrosion but are considerably more expensive than other stainless versions.
Why Engineers choose Shoulder Screws from Automotion Components?
Unmatched Precision
Our shoulder screws are machined to tight tolerances that expose weaknesses in lesser components. If you want perfect alignment, smooth motion, and zero slop — this is where you get it.
Materials That Mean Business
Choose from:
- Stainless Steel (A2, A4, 416)
- High-strength steel (8.8, 10.9, 12.9)
- Titanium (Grade 2 & 5)
- Blackened stainless
- Zinc-plated finishes
Every material is selected for strength, corrosion resistance, and long-term performance. No shortcuts.
Massive Range. Immediate Availability.
Cap head, countersunk, pan head, slotted, TX drive, ultra low head, vented, imperial, metric — if it exists, we stock it. If it doesn’t, we manufacture it.
UK Manufacturing You Can Trust
Our components are produced in the south of England with full traceability and compliance. Stocked items ship fast — because downtime is expensive and waiting weeks for parts is unacceptable.
Custom Shoulder Screws? Done.
If your design needs something unique, we’ll make it. Special shoulders, custom heads, unusual lengths, exotic materials — our production machines handle it all.
Why Engineers choose Shoulder Screws from Automotion Components?
Unmatched Precision
Our shoulder screws are machined to tight tolerances that expose weaknesses in lesser components. If you want perfect alignment, smooth motion, and zero slop — this is where you get it.
Materials That Mean Business
Choose from:
- Stainless Steel (A2, A4, 416)
- High-strength steel (8.8, 10.9, 12.9)
- Titanium (Grade 2 & 5)
- Blackened stainless
- Zinc-plated finishes
Every material is selected for strength, corrosion resistance, and long-term performance. No shortcuts.
Massive Range. Immediate Availability.
Cap head, countersunk, pan head, slotted, TX drive, ultra low head, vented, imperial, metric — if it exists, we stock it. If it doesn’t, we manufacture it.
UK Manufacturing You Can Trust
Our components are produced in the south of England with full traceability and compliance. Stocked items ship fast — because downtime is expensive and waiting weeks for parts is unacceptable.
Custom Shoulder Screws? Done.
If your design needs something unique, we’ll make it. Special shoulders, custom heads, unusual lengths, exotic materials — our production machines handle it all.
What Makes Our Shoulder Screws Better?
- Pecision-Ground Shoulders
- For perfect fit, perfect motion, and perfect repeatability.
- Consistant Tolerances
- Because "close enough" is not engineering strategy
- Engineered for Abuse
- High-load, high-cycle, high-stress environmentsare exactly what these screws are built for.
- Designed for Real-World Applications
- Robotics, automation, medical devices, automotive, aerospace, mould tools — anywhere precision matters, our shoulder screws dominate.
Types of Shoulder Screws We Supply
Cap Head Shoulder Screws
The industry standard for strength and precision. Available in stainless, titanium, TX drive, and blackened finishes.
Countersunk & Pan Head Shoulder Screws
For flush mounting and compact assemblies where space is tight and performance is critical.
Ultra Low Head Shoulder Screws
When every millimetre counts. Sleek, strong, and engineered for tight spaces.
Vented Shoulder Screws
For vacuum environments where trapped gases are a problem. Stainless and titanium options available.
Shoulder Bolts
High strength steel and stainless shoulder bolts up to M42. Built for heavy duty industrial applications.
Stop Fighting Your Hardware. Start Upgrading It.
Poorly machined shoulder screws cause misalignment, wear, vibration, and premature failure. Automotion shoulder screws eliminate those problems — and elevate the performance of your entire assembly.
If you're tired of:
- Loose fits
- Inconsistent tolerances
- Cheap imports
- Components that don't last
...it's time to switch to components engineered for professionals.
Order Shoulder Screws Online Today
Browse the full range, compare materials and standard, and order instantly. Need something custom? Our UK ingineering team will build it.
Automotion Components - Precision hardware for engineers who don't compromise.
What Makes Our Shoulder Screws Better?
- Precision-Ground Shoulders
- The perfect fit, perfect motion, and perfect repeatability.
- Consistent Tolerances
- Because "close enough" is not an engineering strategy.
- Engineered for Abuse
- High-load, high-cycle, high-stress environments are exactly what these screws are built for.
- Designed for Real-World Applications
- Robotics, automation, medical devices, automotive, aerospace, mould tools — anywhere precision matters, our shoulder screws dominate.
Types of Shoulder Screws We Supply
Cap Head Shoulder Screws
The industry standard for strength and precision. Available in stainless, titanium, TX drive, and blackened finishes.
Countersunk & Pan Head Shoulder Screws
For flush mounting and compact assemblies where space is tight and performance is critical.
Ultra Low Head Shoulder Screws
When every millimetre counts. Sleek, strong, and engineered for tight spaces.
Vented Shoulder Screws
For vacuum environments where trapped gases are a problem. Stainless and titanium options available.
Shoulder Bolts
High strength steel and stainless shoulder bolts up to M42. Built for heavy duty industrial applications.
Stop Fighting Your Hardware. Start Upgrading It.
Poorly machined shoulder screws cause misalignment, wear, vibration, and premature failure. Automotion shoulder screws eliminate those problems — and elevate the performance of your entire assembly.
If you're tired of:
- Loose fits
- Inconsistent tolerances
- Cheap imports
- Components that don't last
...it's time to switch to components engineered for professionals.
Order Shoulder Screws Online Today
Browse the full range, compare materials and standard, and order instantly. Need something custom? Our UK ingineering team will build it.
Automotion Components - Precision hardware for engineers who don't compromise.
