17-4 PH Hex flange bolts
ISO 4162ASTM A564
An integral flange spreads the bearing load of a 17-4 PH bolt. Aging-controlled strength and hardness addresses the service exposure; plain or serrated seating determines contact with the supported surface.
- 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
Which standard is on your order?
Raw Material Specifications
Finished-Bolt 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
Integral flange
Use on mounting brackets and equipment covers to distribute head load over a wider seat and reduce loose parts during assembly. The flange needs a flat landing clear of nearby walls and radii.
Plain bearing face
Choose a plain underside for finished or coated seats where teeth would mark the surface. It also permits controlled sliding at the head-seat interface during tightening.
Flange vs loose washer
An integral flange speeds repeated assembly by keeping the bearing surface with the bolt. Retain a separate washer when the joint needs a replaceable wear face or a specifically hardened bearing layer.
- Head
- Hex drive · Integral flange
- Bearing face
- Plain or specified surface profile
- Length basis
- Under flange
- Threads
- Metric · UNC · UNF · UNJ
- Final condition
- Solution treated (Condition A) · Age hardened H900 · Age hardened H1025 · Age hardened H1150
- Inspection
- Thread gauges · Head and shank dimensions
Manufacturing route
CNC machining suits samples and small batches. Volume heads are formed in a workable condition with the final aging route included in process planning.
Heat treatment & final condition
Solution treatment and the specified aging condition are recorded against the production lot; final dimensions are checked after thermal processing.
Finished geometry
Head geometry, bearing face, shank and thread fit are checked after the final machining and thermal operations.
Where 17-4 PH fits — and what matters
Industrial Machinery & Automation
Machine frames and positioning fixtures17-4 PH hex flange bolts clamp machine frames and positioning fixtures through an integral flange that spreads head load over the mounting face. Alignment, operating cycles and replacement access define the working interface.
Automotive & EV Manufacturing Equipment
Assembly fixtures and test-rig frames17-4 PH hex flange bolts clamp assembly fixtures and test-rig frames through an integral flange that spreads head load over the mounting face. Repeated tooling changes require consistent seating and repeatable assembly dimensions.
Pumps, Valves & OEM
Actuator mounts and pump baseplates17-4 PH hex flange bolts clamp actuator mounts and pump baseplates through an integral flange that spreads head load over the mounting face. Repeated maintenance makes fit, engagement and access part of the component specification.
Same hex flange bolt. Different material priorities.
17-4 PH material data316L
Molybdenum-bearing stainless performance in wet equipment.
- Connection priority
- Clamp load spread over the integral flange
- Washdown and retained cleaner
- Cleaner concentration, rinse quality and deposits determine the exposure in covered joints. The low-carbon designation does not independently establish a fastener strength class. Include liquid retained at the broad flange underside and its edge against the member in the exposure description.
Inconel 625
Solid-solution strength and resistance to aggressive process liquids.
- Connection priority
- Clamp load spread over the integral flange
- Annealed or solution-annealed 625
- The delivery condition affects strength and high-temperature response. Keep the specified condition with the component’s mechanical acceptance; 718-style aging is not the strengthening route for 625. Include liquid retained at the broad flange underside and its edge against the member in the exposure description.
Duplex 2205
Duplex strength and chloride-corrosion resistance.
- Connection priority
- Clamp load spread over the integral flange
- S31803 or S32205
- The specified UNS fixes the chemistry. Solution treatment, section size and the ordered mechanical or corrosion tests establish the final duplex condition. Include liquid retained at the broad flange underside and its edge against the member in the exposure description.
From drawing to documented delivery
- 01Drawing & BOMForm, dimensions and quantity
- 02Material & formingGrade, heat and manufacturing route
- 03Final inspectionGeometry, threads and ordered tests
- 04Documents & dispatchLot records and identified packing
Order documents
- Material identity
- UNS S17400 · heat number · ordered condition
- Final-part acceptance
- Lot-linked aging record and mechanical acceptance in the final condition.
- Dimensional record
- Thread gauges · Head and shank dimensions
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your 17-4 PH hex flange bolt enquiry
Questions about 17-4 PH hex flange bolts
Can the flange replace a separate washer?
Only when its bearing footprint and the supported surface meet the assembly requirement. A serrated seat can damage a coating, while a thin or slotted member may need a different bearing arrangement.