17-4 PH Socket Head Cap Screws
ISO 4762 · ASME B18.3ASTM A564 — bar
17-4 PH socket head cap screws for compact, highly loaded machine joints, with the H-condition selected for strength, toughness and the operating environment.
- 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
- Tooling plates & compact actuator housings
- Critical dimensions
- Head diameter · socket depth · under-head length
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
Partial thread
Use where a plain grip must span the clamped components. Match the under-head length and thread length so the screw tightens the stack before its thread runout reaches the tapped hole.
Full thread
Use for shorter component stacks and varied tapped-hole depths. The longer usable thread offers adjustment, while the screw end must clear the bottom of a blind hole.
- Product forms
- Partial thread · Full thread
- Dimensional control
- Head diameter · socket depth · under-head length
- Manufacturing
- CNC-machine samples and small lots. Form suitable production blanks, finish the socket and bearing face, and roll or cut the thread to the specified fit.
- 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
Industrial Machinery & Automation
Machine housings and service covers17-4 PH socket head cap screws fasten machine housings and service covers with axial tool access inside a head counterbore. The socket and under-head seat remain accessible for service removal. Alignment, operating cycles and replacement access define the working interface.
Pumps, Valves & OEM
Pump casings and valve bonnets17-4 PH socket head cap screws fasten pump casings and valve bonnets with axial tool access inside a head counterbore. The socket and under-head seat remain accessible for service removal. Repeated maintenance makes fit, engagement and access part of the component specification.
Automotive & EV Manufacturing Equipment
Test-equipment housings17-4 PH socket head cap screws fasten test-equipment housings with axial tool access inside a head counterbore. The socket and under-head seat remain accessible for service removal. Repeated tooling changes require consistent seating and repeatable assembly dimensions.
Same socket head cap screw. Different material priorities.
17-4 PH material data316L
Molybdenum-bearing, low-carbon austenitic stainless steel for wet equipment and routine washdown.
316L Socket Head Cap ScrewsFrom 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
Tooling plates & compact actuator housings: H-condition · counterbore clearance · clamp load.
Material & final condition
Aging establishes the H-condition. Precision locating surfaces are finished and checked in the final condition.
Connection inspection
Head diameter · socket depth · under-head length. H-condition · hardness · critical fits · dimensional report.
Build your 17-4 PH socket head cap screw enquiry
Upload drawing insteadQuestions about 17-4 PH socket head cap screws
Is H900 always the right condition for a 17-4 screw?
H900 is a high-strength condition; higher aging temperatures change the balance of strength and toughness. The specified H-condition should follow the joint load and environment rather than a default hardness target.
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.