Small Parts Stainless Steel Machine Screw, Flat Head, Slotted Drive, #4-40, 9/16" Length (Pack of 100)

Stainless Steel Machine Screw, Flat Head, Slotted Drive, #4-40, 9/16" Length (Pack of 100) Review

Stainless Steel Machine Screw, Flat Head, Slotted Drive, #4-40, 9/16" Length (Pack of 100) Feature

• Machine Screws are often used with nuts or driven into tapped holes
• Stainless Steel is suitable where formability and cost are important considerations
• Flat head style allows fastener to sit flush to the surface
• Driven by a flat-bladed driver
• Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads

Stainless Steel Machine Screw, Flat Head, Slotted Drive, #4-40, 9/16" Length (Pack of 100) Overview

Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance, and low-temperature toughness.  These properties account for their extremely wide use in practically every industry. Austenitic Stainless Steels are alloys of iron and carbon that contain between 16% and 30% Chromium, a maximum of 0.15% carbon, along with Nickel (or Manganese), and other alloying elements.  The chromium, which helps develop a passive surface oxide film, provides corrosion resistance in stainless steels.   Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. 304, 316).  Another common naming convention for Austenitic Stainless Steels are 18/8, 18/10, 18/0, etc. where the 18 refers to the % of Chromium and 8 to the % of Nickel contained in the material.    

Flat head fasteners are designed to fit flush to the surface when used with countersunk holes. Length is measured from the top of the head. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.

Antrin Miniature Specialties, Inc. Precision Stainless Steel 303 Machine Screw, Flat Fillister Head, Slotted Drive, NAS, M1-0.25, 0.120" Length (Pack of 25)

Precision Stainless Steel 303 Machine Screw, Flat Fillister Head, Slotted Drive, NAS, M1-0.25, 0.120" Length (Pack of 25) Review

Precision Stainless Steel 303 Machine Screw, Flat Fillister Head, Slotted Drive, NAS, M1-0.25, 0.120" Length (Pack of 25) Feature

• Machined, Precision, Instrument quality machine screws, manufactured to National Aerospace Standards
• Precision, Burr free
• Passivated 303 Stainless Steel Material conforms to AMS-5640 Type 1, ASTM-A-582, MIL-S-7720, QQS763C, QQS764B
• Aerospace Quality
• Medical Quality

Precision Stainless Steel 303 Machine Screw, Flat Fillister Head, Slotted Drive, NAS, M1-0.25, 0.120" Length (Pack of 25) Overview

Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance, and low-temperature toughness. These properties account for their extremely wide use in practically every industry. Austenitic Stainless Steels are alloys of iron and carbon that contain between 16% and 30% Chromium, a maximum of 0.15% carbon, along with Nickel (or Manganese), and other alloying elements. The chromium, which helps develop a passive surface oxide film, provides corrosion resistance in stainless steels. Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. 304, 316).

Stainless Steel 303 contains 0.15% carbon, along with traces of sulfur and phosphorus which makes this a free machining alloy. Free machining refers to the ability to cut and finish the materials without heavy wear on the machining tools. Tensile Strength is 35000 psi (pounds per square inch). Passivation helps prevent corrosion in certain stainless steels by removing surface impurities that can be caused by machining or forming processes. These impurities block the normally occurring formation of a protective oxide coating on the steel.

Fillister head for high torque and good hold-down strength

A threaded fastener's size name includes information about the major external diameter (in millimeters), followed by the thread pitch (millimeters per thread), which indicates if it is coarse or fine. Fine threads are preferable when working with harder materials or when threading into a thin material. They are also stronger in tension than coarse threads, and generally provide higher shear strengths.

HANDIMAN MARINE Stainless Steel Phillips Oval Head Machine Screw 10-24 x 1-1/2, Pack of 10

Stainless Steel Phillips Oval Head Machine Screw 10-24 x 1-1/2, Pack of 10 Review

Stainless Steel Phillips Oval Head Machine Screw 10-24 x 1-1/2, Pack of 10 Feature

• Sold 10 per pack
• HANDIMAN MARINE COMPANY 696

Stainless Steel Phillips Oval Head Machine Screw 10-24 x 1-1/2, Pack of 10 Overview

3 per Card

Small Parts Stainless Steel 316 Machine Screw, Pan Head, Phillips Drive, #8-32, 3/4" Length (Pack of 25)

Stainless Steel 316 Machine Screw, Pan Head, Phillips Drive, #8-32, 3/4" Length (Pack of 25) Review

Stainless Steel 316 Machine Screw, Pan Head, Phillips Drive, #8-32, 3/4" Length (Pack of 25) Feature

• 316 stainless steel offers superior corrosion resistance compared to 302 and 304 stainless steels
• Suitable for a range of applications including harsh chemical-processing and marine environments, 316 stainless steel resists chemicals, solvents, and chlorides
• Pan head style has a lower profile than similar round and fillister styles but still protrudes above fastened material for easy installation and removal
• Phillips drive reduces risk of over-tightening to protect screw and fastened material
• Designed according to ANSI B18.6.3 standards

Stainless Steel 316 Machine Screw, Pan Head, Phillips Drive, #8-32, 3/4" Length (Pack of 25) Overview

Choose 316 stainless steel machine screws when you need superior corrosion resistance to chemicals, solvents, and chlorides in a range of fastening applications including chemical-processing and marine environments.

Offering better corrosion resistance than both 302 and 304 stainless steels, 316 stainless steel contains molybdenum and higher amounts of chromium and nickel than other stainless steel alloys. These additional elements protect screws from pitting, a form of corrosion that creates holes in material. Austenitic Stainless Steels are alloys of iron and carbon that contain between 16% and 30% chromium, a maximum of 0.15% carbon, along with nickel or manganese, and other alloying elements. The chromium, which helps develop a passive surface oxide film, provides corrosion resistance in stainless steels. Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. 304, 316).

Pan head fasteners feature a lower profile than similar styles such as round and fillister heads but still protrude above fastened material for easy installation and removal. The cross-slotted Phillips drive style reduces risk of over-tightening. This design causes the driver to slip under too much force, protecting both the screw and the fastened material from damage. Screws are designed according to ANSI B18.6.3 standards, which specify dimensions including head diameter and height, slot width and depth, and driver size.

Machine screws, also referred to as machine bolts, often are used with nuts or driven into threaded holes in metal or composite materials. A threaded fastener's size includes information about the screw’s largest diameter, followed by the number of threads per inch, which indicates whether it is coarse (has fewer threads per inch) or fine (has more threads per inch). Coarse threading provides easier, faster assembly and is ideal for softer materials. Fine threading offers greater strength and works best with very hard materials or thin materials like sheet metal.