FF-S-92
Set Screws
Mumbai · India
Why Set Screws Are a Genuinely Different Fastener
Every other screw class we manufacture holds two parts together through a head bearing down on a surface — a cap screw’s head, a machine screw’s head, even a wood screw’s clamping action. A set screw does something entirely different: it has no head at all, and instead threads fully into a tapped hole in an outer part (like a collar or pulley hub) until its point contacts — and in some cases actually bites into — an inner part like a shaft, transferring holding force through direct point pressure rather than head clamping.
That headless, point-driven design is exactly why set screws exist as their own fastener class — a headed screw simply can’t do this job, since there’s often no clearance around a shaft for a head to sit, and the point-to-shaft contact is the entire mechanism holding the assembly in place against rotation or slippage. Choosing the right point type is the practical decision that actually determines whether the set screw holds securely or lets the assembly slip under load.
Akbar Fasteners Pvt. Ltd. exports to over 50 countries, and our set screw range is manufactured across cup, cone, flat, dog, and half-dog point types, verified by hardness and dimensional testing under our ISO 9001:2015 quality system.
Where FF-S-92 Genuinely Applies
Headless Design for Tight Clearance
No head means no clearance issue around rotating shafts, collars, or recessed applications.
Hardened Point for Genuine Holding Force
Case-hardened points resist deformation under the pressure needed to hold securely against a shaft.
Multiple Point Types for Different Duty
Cup, cone, flat, dog, and half-dog points, each suited to different shaft surfaces and holding requirements.
Verified Hardness & Dimensional Accuracy
Batch testing confirms genuine point hardness, not just correct outer thread dimensions.
Set Screw Point Type Options
Cup Point Set Screw
Concave tip with a sharp rim that bites lightly into the shaft — the most common general-purpose point type.
Cone Point Set Screw
Sharp conical tip designed to seat into a matching drilled dimple in the shaft for maximum holding force.
Flat Point Set Screw
Flat tip that bears against the shaft surface without marking it — used where the shaft surface must stay undamaged.
Dog Point Set Screw
Cylindrical pilot that fits into a matching hole or slot in the shaft, providing positive axial and rotational location.
Half-Dog Point Set Screw
A shorter dog pilot than the full dog point, for shallower matching holes or slots in the shaft.
Hex Socket / Slotted / Square Head
Internal hex socket, slotted, or square-head drive options depending on tool access and torque requirements.
Point Type Selection Guide
The right point type depends on whether the shaft surface can be marked, and whether a matching hole or slot exists. This table is the quick reference we use with buyers before quoting.
| Point Type | Shaft Marking | Typical Use Case |
|---|---|---|
| Cup Point | Light marking | General-purpose, most common default |
| Cone Point | Requires matching dimple | Maximum holding force with a drilled seat |
| Flat Point | No marking | Finished or hardened shafts, frequent adjustment |
| Dog Point | Requires matching hole/slot | Positive axial location, high vibration resistance |
FF-S-92 Specification Details
Materials We Manufacture In
- Alloy Steel Case-Hardened Point
- Stainless Steel 304 / 316
- Finish Plain / Black Oxide
- Coating Available on Request
How Set Screws Are Made
- Process Cold Formed / Machined
- Point Hardening Case Hardened
- Testing Hardness / Dimensional
- Quality Batch Sampled
Available Dimensions
- Nominal Size #0 – 1″ (Inch Series)
- Metric Equivalent Available to Drawing
- Length Custom to Application
- Point Type Cup / Cone / Flat / Dog / Half-Dog
Application Areas
Wherever a rotating part needs to be locked onto a shaft without a clamping head.
Shaft Collars & Couplings
rotating shafts
Pulleys & Sprockets
sprockets on drive shafts
Gears & Bearing Assemblies
bearing hubs on shafts
Motor & Gearbox Assembly
components in position
Knobs & Handles
handles onto shafts
Government & Defense Equipment
set screw needs
Robotics & Precision Machinery
in automated equipment
General Shaft Locking Applications
federally specified projects
Standard Export Documentation
Prepared as standard practice for every FF-S-92 set screw shipment.
Mill Test Certificate (MTC)
Heat number, chemical composition, and mechanical property verification for every lot.
Certificate of Conformance
Confirms the shipment matches the purchase order point type/material specification in full.
Hardness Test Records
Batch-level testing confirming genuine case hardness at the point for reliable holding force.
Certificate of Origin (COO)
Confirms India as country of manufacture for destination customs purposes.
NABL Accredited Test Reports
Independent mechanical and dimensional testing available on request for critical applications.
Commercial Invoice & Packing List
Itemized value, Incoterm, and detailed carton/weight breakdown for customs clearance.
Internationally Recognised Standards Coverage
Related Fastener Grades & Materials
FF-S-107 Cap Screws
Headed, precision cap screws for tensioned machine-part joints instead of shaft locking.
View FF-S-107 →FF-S-210 Machine Screws
The general-purpose machine screw specification for standard assembly needs.
View FF-S-210 →Stainless Steel Fasteners Manufacturer in India
Our full stainless steel grade range, relevant for corrosion-resistant set screw material.
View Stainless Range →Fasteners Manufacturer & Exporter to the USA
Our broader capability manufacturing to ASTM/ASME and US federal standards.
View USA Export Guide →Need to Lock a Part
Securely to a Shaft?
Tell us your shaft material and whether marking is acceptable — we’ll confirm the right point type and quote across our full set screw range. Akbar Fasteners Pvt. Ltd. responds within 24 hours.
Sales: +91 724 0000 733 · Support: +91 800 9315 333 · sales@akbarfasteners.in