Precision fasteners for Industrial Machinery & Automation.
High-strength fixture screws, precision locating bolts and washdown fixings built around the machine drawing.
Which fasteners fit your industrial machinery and automation applications?
BYBOLT supplies 17-4 PH socket head screws for strong fixture clamping and 17-4 PH positioning bolts for repeatable location. A-286 long-shank hex bolts carry heated tool stacks, while 316L hex flange bolts resist corrosion on washdown covers. Order the shoulder fits, grip lengths and mating hardware as one machine assembly.
Fasteners for machine tools & automation fixtures.
High-speed robotic arms & linear gantries
Robot tool changers and end-effectors often place screws in counterbores to keep the outside profile clear. Grade 5 socket screws reduce the moving hardware mass and can be tightened along the screw axis. The counterbore depth must still leave a supported head seat and enough key engagement for repeated tool changes.
Titanium Grade 5 Socket Head Cap ScrewsRelated material guides
Connection requirements
- Counterbore and head clearance
- Tool-plate thread material
- Preload and anti-galling assembly method
Heavy press & injection-molding platens
17-4PH shoulder bolts anchor heavy platens against repeated clamping shock and thermal cycling. Their high strength resists shear and embedment, keeping die alignment stable through long, high-pressure production runs.
17-4PH shoulder boltsRelated material guides
Connection requirements
- Platen thickness and bolt-hole pattern
- Shoulder diameter and bearing-face flatness
- Clamping force distribution across the die
Precision rotary tables & spindle mounts
On rotary tables, recessed socket screws keep tooling fasteners below the working surface. Grade 5 lowers the mass of the rotating fastener group. Screw length, mass consistency and tightening sequence matter where the tooling plate must remain balanced and flat after assembly.
Titanium Grade 5 Socket Head Cap ScrewsRelated material guides
Connection requirements
- Counterbore depth and screw length
- Mass consistency across the pattern
- Tooling-plate flatness and preload
Ultrasonic welding & high-frequency actuators
Nitronic 60 shoulder bolts offer galling resistance at repeatedly adjusted actuator attachments. Ultrasonic horn and transducer joints need the equipment designer’s bolt grade, fatigue and preload requirements; anti-galling performance alone does not qualify a resonant joint.
Nitronic 60 shoulder boltsConnection requirements
- Actuator horn interface and mating flatness
- Shoulder-bolt clearance and thread fit
- Vibration-resistant locking and retorque schedule
Corrosive washdown packaging conveyors
2205 hex bolts suit removable washdown-conveyor brackets and guards exposed to chloride-bearing cleaning water. Their combination of strength and corrosion resistance is useful where ordinary 304 or 316-type hardware does not meet the joint's requirements. Accessible heads and appropriate thread projection keep the connection practical to clean and dismantle.
Duplex 2205 Hex BoltsRelated material guides
Connection requirements
- Cleaning chemical and chloride level
- Bracket stack and grip length
- Access for tightening and drainage
Cryogenic & thermal-chamber test fixtures
Titanium Grade 5 socket screws reduce fixture weight and thermal expansion relative to many steel options. For cryogenic and heated chambers, choose the material condition and grip geometry for the test temperature, toughness and required clamp load.
Titanium Gr.5 socket screwsConnection requirements
- Fixture material and thermal-expansion matching
- Socket screw thread engagement at low temperature
- Sealing-face flatness and assembly torque procedure
Mass, clamp load, and adjustment wear.
Titanium Grade 5 screws reduce moving mass on robot tooling; class 12.9 steel offers high strength where weight is less critical. Select for the required clamp load and joint stiffness, with fatigue performance checked against thread geometry and the actual motion cycle.
What to specify
- Reciprocating mass per moving axis
- Design fatigue cycle count
- Peak acceleration and vibration level
17-4PH H900 emphasizes strength, while H1150 trades some strength for toughness. A-286 addresses heated tooling and 2205 offers chloride resistance. Coated steel remains a practical option for many loaded machine joints when its corrosion protection suits the exposure.
What to specify
- Required clamp load per joint
- Washdown exposure frequency and chemical class
- Operating temperature range
Nitronic 60 adjuster screws reduce galling during repeated fixture setup. Custom 450/455 offers precipitation-hardened strength for other adjustment duties; choose the mating pair, finish and lubrication for the contact pressure and frequency of movement.
What to specify
- Adjustment frequency over service life
- Thread bearing pressure
- Anti-galling performance rating
Compare machinery fastener alloys.
| Material grade | Mechanical Duty / Focus | Environment | Relative cost | Popular fastener forms |
|---|---|---|---|---|
| 17-4 PHUNS S17400Precipitation hardened |
| Precision tooling and actuators in dry or mildly corrosive service | $$ |  Socket screws |
| A-286UNS S66286Hot strength |
| Heated tooling and thermally cycled machine joints | $$ |  Long-shank bolts |
| 316L stainless steelUNS S31603Low-carbon stainless |
| Wet production zones and equipment washdown | $ |  Flange-head bolts |
Budget guide: $ lower · $$ moderate · $$$ higher · $$$$ premium. Relative raw-material bands; dimensions, quantity, processing and inspection determine the finished-fastener quote.
Material & cost references
- Carpenter Technology — Custom 630 (17-4 PH) material data
- Special Metals — High-performance alloy reference guide
- British Stainless Steel Association — Food-processing material selection
- Nickel and specialty-alloy round-bar price comparison
- Stainless-steel supplier price ranges
- 800H round-bar supplier price range
- Alloy 20 round-bar supplier price range
Cost bands group overlapping published supplier ranges for initial budgeting; they are not live BYBOLT prices. Specify the exact UNS and final condition on the order.
Positioning bolts, socket screws & long-shank bolts.
17-4 PH socket head screws
Clamp assembly fixtures with high strength and a recessed drive that fits close-spaced joints.
17-4 PH positioning bolts
Locate tooling repeatedly with a controlled shoulder and an age-hardened, high-strength body.
A-286 long-shank hex bolts
Span heated tool stacks while retaining elevated-temperature strength and the specified grip length.
316L hex flange bolts
Spread clamp load on machine covers while resisting corrosion in wet production and washdown areas.
Fixture mounting & locating kits.
Order the clamping and locating hardware together so a fixture rebuild starts with the correct shoulders, grip lengths and mating parts.
Machinery fastener traceability & dimensional inspection.
EN 10204 3.1 MTC, heat traceability and mechanical test results with each shipment. Add the tests your equipment specification requires.
Material identity
Match the ordered grade and material heat to the certificate, part identification and packing list.
Final condition
Link the specified processing condition and mechanical results to the finished batch; keep separate heat-treatment batches identifiable.
Drawing dimensions
Part/revision, datums, shoulder and grip dimensions.
Critical-fit records
Identify the locating datums, tolerances and measurement method; require results in the final delivered condition.
Before you order machinery fasteners.
Send the drawing and the service details for your connection. We can quote the specified parts, finish and inspection package together.
Get a QuoteCan a locating shoulder be made to a specified fit?
Yes. Send the shoulder dimensions, tolerances and datums, together with final material condition and inspection requirements. Critical dimensions can be checked in the delivered state.
Which 17-4 PH condition should be on the drawing?
Use the condition selected for the required strength, toughness and environment. H900 and H1150 are different property choices; include the approved condition on repeat orders.
Can you keep repeat tooling orders consistent?
Yes. Identify the approved drawing revision, material condition and critical inspection dimensions. List changes separately from the previous order and retain the part number on the packing list.
Send your drawing
or parts list.
Upload the drawing or BOM with its revision. We quote the material, dimensions, quantities and inspection requirements for your equipment.
Tool/part revision, locating datums and tolerances, grip/thread dimensions, material condition, heat/washdown duty and quantity…
