316L Socket Head Cap Screws
ISO 4762 · ASME B18.3ASTM A276 / A479 — bar
316L socket head cap screws for recessed wet-equipment joints, using axial key access where side clearance is limited and the stainless grade suits the cleaning environment.
- MOQ
- 100PCS
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Solution annealed
EN 10204 3.1 MTC + heat-number traceability
316L in this connection
Molybdenum-bearing, low-carbon austenitic stainless steel for wet equipment and routine washdown.
- Connection
- Battery-production washdown equipment & machine covers
- Critical dimensions
- Head diameter · socket depth · under-head length
Which standard is on your order?
Raw Material Specifications
Finished-Screw Specifications
Threads · Metric
Threads · Inch
Dimension Reference
Heat Treatment
Solution annealed; cold worked for strengthened conditionsSolution annealing restores a ductile corrosion-resistant structure, while specified cold work raises strength without precipitation aging.
What we can make in 316L
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
- Solution annealing establishes the specified stainless condition; age hardening is not the strengthening route.
- Inspection
- Chemistry including carbon · dimensional inspection · specified mechanical properties
Where 316L fits — and what matters
Automotive & EV Manufacturing Equipment
Test-equipment housings316L 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.
Food & Beverage Equipment
Washdown pump housings and removable covers316L socket head cap screws fasten washdown pump housings and removable covers with axial tool access inside a head counterbore. The socket and under-head seat remain accessible for service removal. Cleaning liquid can remain under the part; exposed finish and access for cleaning matter at the assembled joint.
Pulp & Paper
Bleach-plant pump and process covers316L socket head cap screws fasten bleach-plant pump and process covers with axial tool access inside a head counterbore. The socket and under-head seat remain accessible for service removal. Process carryover and shutdown cleaning can expose the connection to different chemical mixtures.
Semiconductor Manufacturing Equipment
Process-tool pump and chamber service covers316L socket head cap screws fasten process-tool pump and chamber service covers with axial tool access inside a head counterbore. The socket and under-head seat remain accessible for service removal. The part location separates chemical exposure from temperature and cleanliness requirements.
Same socket head cap screw. Different material priorities.
316L material dataDuplex 2205
Duplex stainless combines higher yield strength than conventional austenitic grades with improved resistance to chloride stress-corrosion cracking.
Duplex 2205 Socket Head Cap Screws904L
High nickel and molybdenum, with copper, extend corrosion resistance beyond 316L in selected acid and chloride duties.
904L Socket Head Cap ScrewsInconel 625
Molybdenum and niobium provide solid-solution strength, combined with resistance to chloride pitting and crevice corrosion.
Inconel 625 Socket Head Cap Screws17-4 PH
Precipitation-hardening stainless offers a choice of strength, hardness and toughness through its H-condition.
17-4 PH 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
Battery-production washdown equipment & machine covers: Cleaner chemistry · recessed water retention · tool access.
Material & final condition
Solution annealing establishes the specified stainless condition; age hardening is not the strengthening route.
Connection inspection
Head diameter · socket depth · under-head length. Chemistry including carbon · dimensional inspection · specified mechanical properties.
Build your 316L socket head cap screw enquiry
Upload drawing insteadQuestions about 316L socket head cap screws
Is a 316L socket screw equivalent to a high-strength alloy-steel cap screw?
The dimensional pattern can be the same while mechanical properties differ substantially. The required finished-screw strength and stainless condition must be identified instead of inheriting an alloy-steel strength class.
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.