MP35N Flat Head Screws
MP35N Flat Head Screws
MP35N flat head screws are known for their extraordinary strength and are the strongest screws we offer at RAYCHIN. MP35N screws owe their extraordinary strength to a unique alloy combination of nickel, cobalt, chrome and molybdenum and have ultimate tensile strengths that range from 227 ksi to 294 ksi (with age hardening).
Beyond the strength of MP35N flat head screws, they are also exhibit good corrosion resistance and can resist most mineral acids, hydrogen sulfide, seawater and salt spray environments.
MP35N screws are also resistant to high temperature oxidation and could operate in environments up to 800°F and still maintain much of its strength.
One of the highest strength alloys available to industry
· Extreme high strength properties up to 300 ksi ultimate tensile.
· Good in moderately elevated temperatures of 800°F.
· Moderate corrosion resistance.
· MP35N Chemistry, specs, and heat treatments
· Datasheet for MP35N
· MP35N flat head screw features and benefits
Applications where MP35N flat head screws are often found are: aerospace, defense, marine, chemical processing, oil and gas and medical.
Resources: MP35N Torque Spec
Screw Types: 12 Point Screws, Button Head Cap Screws, Flat Head Screws, Hex Cap Screws, Pan Head Screws, Set Screws, Socket Head Cap Screws, Tamper Resistant Security Screws, Torx Screws
MP35N Flat Head Screw Features and Benefits
MP35N flat head screws are characterized by having a head with a top flat surface (which can feature either a slotted, phillips or allen driver) and bottom that is cone shaped or countersunk. With this design, the head of the screw can align flush or below the surrounding surface having obvious benefits.
MP35N Slotted vs. Phillips Driver
Slotted Head Advantages | Phillips Head Advantages |
· Slotted head screws tend to strip less than Philips, especially in harsh environments · Slotted heads are typically better in applications where it's going to be unscrewed and re-done periodically, as the head tends to wear less. · In dirty environments, a flat head is much easier to clean out | · Phillips head offers a much stronger joint since it can tolerate more torque. |
Countersink Angle
For most flat head screw designs the angle of countersink is usually 82° for UNC and UNF applications however other angles ranging from 60° -120° could be specified.
Thread Type | Normal Flat Head Countersink Angle |
UNC / UNF | 82° |
Aerospace | 100° |
ISO Metric / Imperial | 90° |
MP35N Chemistry, Specs and Heat Treatments
Heat Treating & Aging: MP35N is usually supplied in heat treated and cold drawn condition AMS 5844. In this state the MP35N can be worked into the desired fastener form and aged to the AMS 5845 specification. Once aged, the MP35N material could achieve it full strength potential.
MP35N Specifications: AMS 5844, AMS 5845, AMS7468, ASTM F562, NACE MR0175
MP35M | Ni | Co | Cr | Mo |
Typical% | 35 | 35 | 20 | 10 |
MP35N Mechanical Data (Dependent of Part Size)
Guaranteed Minimum Properties | Nominal Properties |
| USt(%) | Yield Strength (0.2%) ksi | Elongation (%4D) | RA(%)) | HRC | UTS(kis) | Yield Strength (0.2%) ksi | Elongation (%40) | RA(%) | HRC |
MP35N Cold Dg Full Strength | 260 | 230 | 8 | 35 | 44 min | 285 | 275 | 9 | 45 | 50 |
MP35N Corrosion Data
Media | Corrosion Resistance | Media | Corrosion Resistance |
Nitric Acid | Good | Sulfuric Acid | Good |
Phosphoric Acid | Good | Acetic Acid | Excellent |
Sodium Hydroxide | Good | Salt Spray (NaCl) | Excellent |
Sea Water | Excellent | SourOil/Gas | Excellent |
