Stainless Steel Flat Point Grub Screw - Grade 202, 304, 316, A2, A2-70

A Flat Point Grub Screw, also known as a set screw with flat end, is a headless fastener used to secure one object within or against another, typically without protruding above the surface. The defining feature is its flat tip, which allows for maximum surface contact without damaging the mating surface.

Technical Specifications – Flat Point Grub Screw

Here is the technical specification table for Flat Point Grub Screws (also known as Set Screws – Flat End), based on common standards like DIN 913 / ISO 4026:

Parameter	Description
Standard	DIN 913 / ISO 4026
Thread Type	Metric (M) / Unified (UNC/UNF)
Thread Class	6g (metric) / Class 3A (imperial)
Point Type	Flat Point
Drive Type	Hex Socket (Allen)
Material	Stainless Steel (A2, A4), Alloy Steel, Brass
Finish / Coating	Plain, Black Oxide, Zinc Plated, Passivated
Available Sizes (M)	M2 to M24
Length Range (mm)	3 mm to 100 mm
Hardness	45–53 HRC (for alloy steel variants)
Tensile Strength	Up to 1220 MPa (for alloy steel)
Applications	Shafts, collars, gears, pulleys, couplings

Tip Type: Flat end (no indentation or taper)
Drive Style: Usually hex socket (Allen), though other drives exist
Head Type: Headless (threaded along the full length)
Material: Stainless steel, alloy steel, brass, etc.
Surface Finish: Black oxide, zinc plated, passivated, etc.
Maximum surface contact with the mating part
Does not deform or mark the shaft
Easy to adjust or remove
Suitable for frequent re-tightening
Securing a shaft collar or pulley to a shaft
Used where minimal surface damage is required
Ideal in permanent or semi-permanent positioning applications
Suitable for use against hard or soft materials

The flat point grub screw, also referred to as a set screw, is specifically created to secure components by being screwed into a threaded hole until the flat tip comes into contact with the mating part. This unique design enables a flush, internal fastening without any protruding head, making it a popular choice for preventing rotation or axial movement between parts.

Standard

DIN 913 / ISO 4026

Hardness

45–53 HRC

Sizes (Metric)

M2 to M24

Tensile Strength

Up to 1220 MPa

No Head

A key attribute is its lack of a head, which allows for complete recessing into the component."

Flat Tip

The solid edge ensures a firm and steady connection, reducing potential harm to the joining area.

Threaded Shaft

The screw's threaded shaft connects with a corresponding threaded hole in the component.

Drive Mechanism

Commonly, flat point grub screws are equipped with a hex socket drive, commonly known as an Allen key or socket wrench, to facilitate effortless tightening and loosening.

Materials

These materials include stainless steel (in A2 and A4 grades), hardened steel, as well as nylon or PEEK, offering a range of options for different preferences.

Applications

These devices have a broad range of applications in mechanics and engineering, such as fastening pulleys, gears, knobs, and other elements onto shafts or within housings.

Let’s Work Together

Send us a message to have all your questions answered about Flat Point Grub Screw