17-4 PH Square-Head Positioning Bolts
Component drawing · ASME B18.2.1ASTM A564 — bar
17-4 PH square-head positioning bolts for reusable tooling and adjustable fixtures, with aged strength and final-condition locating dimensions specified on the drawing.
- MOQ
- 100PCS
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Solution treated (Condition A) / Age hardened H900 / Age hardened H1025 / Age hardened H1150
EN 10204 3.1 MTC + heat-number traceability
17-4 PH in this connection
Precipitation-hardening stainless offers a choice of strength, hardness and toughness through its H-condition.
- Connection
- Welding fixtures & assembly locating blocks
- Critical dimensions
- Head flats · locating diameter · step length · datum
Which standard is on your order?
Raw Material Specifications
Threads · Metric
Threads · Inch
Dimension Reference
Heat Treatment
Solution treated, then aged to the specified H conditionCondition A is the solution-treated starting state; aging to H900, H1025 or H1150 sets the final strength–toughness balance.
What we can make in 17-4 PH
Forms & dimension guide
Square head
Capture the square head in a matching slot or pocket to stop rotation while tightening from the nut side. Head width and pocket clearance determine how much turning play remains.
Locating shank
Use a machined step or shank to locate fixture plates and adjustable tooling. Specify its fit to the mating bore when repeatable position matters; thread clearance cannot provide that locating accuracy.
- Product forms
- Locating shank · Stepped locating shank
- Dimensional control
- Head flats · locating diameter · step length · datum
- Manufacturing
- CNC-machine the square head and locating features for short runs. Production blanks can be formed; precision locating diameters and steps receive final machining and measurement.
- Final condition
- Aging establishes the H-condition. Precision locating surfaces are finished and checked in the final condition.
- Inspection
- H-condition · hardness · critical fits · dimensional report
Where 17-4 PH fits — and what matters
Automotive & EV Manufacturing Equipment
Assembly fixtures and test-rig frames17-4 PH square-head positioning bolts set stops and clamp positions on assembly fixtures and test-rig frames. The square head provides tool purchase while the end face or point bears on the positioned component. Repeated tooling changes require consistent seating and repeatable assembly dimensions.
Industrial Machinery & Automation
Machine frames and positioning fixtures17-4 PH square-head positioning bolts set stops and clamp positions on machine frames and positioning fixtures. The square head provides tool purchase while the end face or point bears on the positioned component. Alignment, operating cycles and replacement access define the working interface.
Pumps, Valves & OEM
Actuator mounts and pump baseplates17-4 PH square-head positioning bolts set stops and clamp positions on actuator mounts and pump baseplates. The square head provides tool purchase while the end face or point bears on the positioned component. Repeated maintenance makes fit, engagement and access part of the component specification.
Same square-head positioning bolt. Different material priorities.
17-4 PH material data316L
Molybdenum-bearing, low-carbon austenitic stainless steel for wet equipment and routine washdown.
316L Square-Head Positioning BoltsFrom drawing to documented delivery
- 01Drawing & BOMGrade, condition and part dimensions
- 02Sample lotOptional · typically ~20 days
- 03Production & testingTypically 25–35 days
- 04Documents & dispatchHeat-linked lots and packing
Connection & acceptance
Welding fixtures & assembly locating blocks: Slot clearance · locating diameter · aging condition · repeat positioning.
Material & final condition
Aging establishes the H-condition. Precision locating surfaces are finished and checked in the final condition.
Connection inspection
Head flats · locating diameter · step length · datum. H-condition · hardness · critical fits · dimensional report.
Build your 17-4 PH square-head positioning bolt enquiry
Upload drawing insteadQuestions about 17-4 PH square-head positioning bolts
Is the threaded diameter the locating dimension?
Usually the drawing assigns location to a shoulder, step or controlled shank rather than to the thread crest. Identify the locating datum and fit explicitly; the square head may only prevent rotation or provide wrench access.
Technical references & photo credits
Catalogue photography shows product form. Application examples connect alloy properties to equipment duties; they are not customer installation records. Quantities, schedules and the inspection scope are confirmed in the quotation.