MP35N Lock Nuts
MP35N (2.4999) Lock Nuts are known for their extraordinary strength and are the strongest Screws we offer at RAYCHIN. MP35N Lock Nuts 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 Lock Nuts, they are also exhibit good corrosion resistance and can resist most mineral acids, hydrogen sulfide, seawater and salt spray environments.
MP35N Lock Nuts 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 chemisty, specs and heat treatments
Datasheet for MP35N
Applications where MP35N fasteners are often found are: aerospace, defense, marine, chemical processing, oil and gas and medical.
Resources: MP35N Torque Spec
MP35N Lock Nuts Types: Hex Nuts, Lock Nuts
Custom Availability
Diameter sizes: Standard #00 – 4” in diameter / Metric M1.2 – M100
Threads: UNC, UNF, UNJ, UNR, Rolled,Cut
Minimum Volume – Typically 10pcs, depending on size and stock
Custom to print
All Metal Flexloc Lock Nut | 
Polymer/Nylon Insert Lock Nut |
Can be used at high temperatures Distributes load evenly due to the fact that it is manufactured as one solid piece.Is THE most reliable all-metal self-locking nut. As it is all metal, it is best for high temperature or corrosive applications One of the only all-metal lock nuts that is certified to 15 cycles of prevailing torque – which is military standard.
| Overall the most reliable locknut, with the only limitation of application temperature Best for low temp applications, typically less than 350°F Various polymers inserts available (Nylon, Vespel, PVDF, etc.) for higher temp. or corrosive applications. Excellent reusability – can reliably be re-used 15 times Eliminates galling and cold-welding common with exotic alloys
|
Additional Lock Nut Styles
Other all metal lock nuts available include the stover and elliptical styles. Though these styles are often a cheaper initial cost, they are less reliable than the flexloc style. As these styles delivering less prevailing torque cycles and often result in more failures, the flexloc style is a better investment for both reliability and cost savings.
MP35N Fastener Styles
| MP35N Screws | 12 Point Screws Button Head Cap Screws Flat Head Screws Hex Head Cap Screws Pan Head Screws Security Screws Set Screws Socket Head Cap Screws Vented Screw | • DIN 603 / ISO 8677 • DIN 912 / ISO 4762 • DIN 913 / ISO 4026 • DIN 914 / ISO 4027 • DIN 915 / ISO 4028 • DIN 916 / ISO 4029 • DIN 921 • DIN 931 / ISO 4014 • DIN 933 / ISO 4017 • DIN 961 / ISO 8676 • DIN 965 / ISO 7046 • DIN 966 / ISO 7047 • DIN 7991 / ISO 10642 • DIN 7380 / ISO 7380 • DIN 84 / ISO 1207 • DIN 85 / ISO 1580 • DIN 34822 • DIN 34821 • DIN 7504 / ISO 15480 • DIN 7984 • DIN 963 / ISO 2009 |
| MP35N Bolts | Hex Head Bolts Shoulder Bolts Wedge Anchor Bolts | • DIN 931
• DIN 933
• ISO 4014
• ISO 4017
• ISO 7370 |
| MP35N Nuts | Hex Nuts Lock Nut | • DIN 439 / ISO 4035
• DIN 934 / ISO 4032
• DIN 985 / ISO 7040
• DIN 986
• DIN 980 / ISO 7042 / ISO 19513
• DIN 6923 / ISO 4161 |
| MP35N Studs/Rod | Studs Threaded Rod Weld Stud | • DIN 975
• DIN 976 |
| MP35N Washers | Flat Washers Lock Washers | • DIN 125 / ISO 7089 / ISO 7090
• DIN 126 / ISO 7091
• DIN 127 / ISO 7090
• DIN 9021 / ISO 7093 |
| MP35N Hose Clamps | Medium Duty Hose Clamps |
|
MP35N Screws
12 Point Screws | MP35N 12 point screws allow for higher torque to be applied than a socket head cap screw or head head bolt, however they are be less economical due to the complex head design. Available in 1/4" or larger sizes. | • IFI-115
• MIL SPEC
• DIN 34822
• DIN 34821 |
Button Head Cap Screws | MP35N button head screws offer a wide clamping area and low profile. They are best for fastening material that is too thin to counter bore. | • ASME B18.3
• ASME 18.3.4M
• DIN 7380 / ISO 7380 |
Flat Head Screws | MP35N flat head screws are most commonly offered in an 82° countersink angle, but can be customized to other angles from 60° -120° and are designed to be flush with the surface. Available in slotted and socket drivers. Phillips, 6-lobe, torx and tamperproof drivers in MP35N flat head screws can be made require special manufacturing. | • ASME B18.3
• ASME B18.3.6
• DIN 963 / ISO 2009
• DIN 965 / ISO 7046
• DIN 7991 / ISO 10642 |
Hex Head Cap Screws | MP35N hex head cap screws offer the added washer face to the bolt head which is lacking on a hex bolt and tighter dimensional tolerances. Ideal for a high clamping force applications with ease of access. Generally availabe in #2 - 1/2" sizes and metric sizes. | • ASME B18.6.3
• DIN 931 / ISO 4014
• DIN 933 / ISO 4017
• DIN 961 / ISO 8676 |
Pan Head Screws | MP35N pan head screws offer a rounded top are best used for small diameter faster needs. Offered in slotted and they are ideal for low torque applications. | • ASME B18.6.3
• DIN 7985
• DIN 921
• DIN 85 / ISO 1580
• DIN 84 / ISO 1207
(cheese head)
• DIN 966 / ISO 7047
(raised counter sunk) |
Security Screws | Unique driver designs offer these MP35N screws resistance to unwanted tampering or removal due to the fact that they cannot be removed using an ordinary driver. MP35N security screws are available in several different drive styles, as well as custom per print. |
|
Set Screws | MP35N set screws are available in cup, cone, flat, dog and half-dog points. Set screws have no head and are equiped with a socket or slotted driver at one end. | • ASME B18.3
• DIN 913 / ISO 4026
• DIN 914 / ISO 4027
• DIN 915 / ISO 4028
• DIN 916 / ISO 4029 |
Socket Head Cap Screws | MP35N socket head cap screws are ideal for limited access situations where there is little clearance around the screws. They offer a safe, reliable and economic solution. | • ASMET B18.3
• DIN 912 / ISO 4762
• DIN 7984 |
Vented Screws | MP35N vented screws are best for vacuum environments because the hole drilled through its axis (from head through threads) allow gases and other contaminents to vent. MP35N vented screws are available in any style. |
|
MP35N Bolts
Hex Head Bolts | MP35N hex bolts are similar to hex head cap screws but without the added washer face. They are ideal for high clamping force applications with ease access. | • ASME B18.2.1
• DIN 931 / ISO 4014
• DIN 933 / ISO 4017 |
Shoulder Bolts | MP35N shoulder bolts are made up of a head, shoulder and threaded segment. The smooth shoulder section allows for rotating parts. Typically available with socket drivers. | • ASME
• DIN 7379 / ISO 7379
• ISO 7370 |
Wedge Anchor Bolts | MP35N wedge anchor bolts offer a safe secure fastening solution for attaching equipment and other materials to concrete in corrosive environments. |
|
MP35N Nuts
Hex Nuts | MP35N hex nuts are available in a variety of styles including finished hex nuts, jam nuts and heavy hex nuts. | • ASME B18.16.3
• ASME B18.2.2
• DIN 439 / ISO 4035
• DIN 934 / ISO 4032
• DIN 986 |
Lock Nuts | MP35N lock nuts are available in all metal and polymer insert styles. All-metal lock provide even load distribution and can be used at high temperatures. Polymer insert styles are more economical and are best for temperatures under than 350°F. | • ASME B18.16.3M
• DIN 980 / ISO 7042 /
ISO 19513
• DIN 6923 / ISO 4161
• DIN 985 / ISO 10511 /
ISO 7040 |
MP35N Studs & Threaded Rods
Studs | MP35N studs are fully threaded or partially threaded and made to custom lengths. | • ASME B18.31.2
• DIN 976 |
Threaded Rod | MP35N threaded rod or all thread are available in lengths greater than 1 foot. Minimum order quantity is a total of 6 feet of length. | • ASME B1.1
• DIN 975 |
Weld Studs | MP35N weld studs are available in both arc or capacitor discharge (CD) styles. Weld studs provide an extremely secure fastening solution when one side of the stud needs to be permanently fix to a part and the other side with the threads accessible. |
|
MP35N Washers
Flat Washers | MP35N washers are most commonly offered in SAE sizes, but also availabe in USS, oversized and custom sizes upon request. | • ASME 18.21.1
• SAE / USS
• DIN 125 / ISO 7089 /
ISO 7090
• DIN 126 / ISO 7091 |
Lock Washers | MP35N lock washers are offered as split lock washers. Belleville spring lock washers can also be made upon request. | • ASME B18.21.1
• DIN 127 / ISO 7090
• DIN 6796 / ISO 10690
|
MP35N (2.4999) Chemistry, Spec 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 |
