Fastener Help Articles

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  • Fastener Help Articles

    Precio : Gratis

    Publicado por : dnfsdd813

    Publicado en : 26-10-21

    Ubicación : Albacete

    Visitas : 5



    Fastener Help Articles

    You may have heard of "Blue Bolt Coating", its real name is Whitford Xylan?

    Coating... and it isn't always blue. Many of our customers ask for the "Blue Bolt

    Coating", but what exactly is Xylan and when should it be used?
        Xylan is a blend of fluoropolymers, engineering plastics and selected corrosion

    inhibitors which, when combined, create these characteristics in fasteners:
                Low friction
                Exceptional adhesion
                Unusual resistance to wear and abrasion
                Excellent corrosion resistance     
                Resistance to chipping 
                Resistance to the weather, sunlight and salt water
        Xylan's versatility is best demonstrated as a coating for stud

    Bolts and nuts, where it provides

    unparalleled performance in ease of installation, corrosion resistance and ease of removal.

    It can be used on standard alloy steel nuts and bolts, or can be paired with stainless

    steel fasteners for even more benefits.
        Xylan fastener coatings or "Blue Bolt Coatings" are typically specified in

    oil and waterworks applications.
        A bolt’s function essentially boils down to applying a high enough

    Hose Clamps force that when external

    forces are applied, transverse movement and separation cannot occur. Using calibrated

    torque tools to tighten fasteners and apply that clamp force is far superior to going by

    the user’s judgement or feeling.  Or, as one senior technician calls it “The One Grunt or

    Two Grunts Method”.  Measuring torque alone, however, does not ensure a proper

    installation.
        1. Torque is an indirect indicator of Tension.
        Torque is the measurement of twisting force needed to thread the fasteners together.
        2. Tension is the force that actually holds an assembly together. Put another way:
        A bolt can stretch similar to a spring, as it becomes tightened once all the parts of

    the assembly are brought together.
        The higher the torque applied to the fastener, the more tension is created as the bolt

    stretches.
        If a bolt is like a spring and more torque equals more tension, why does not a certain

    amount of torque always result in the same amount of tension?
        Though the relationship between torque and tension is linear, many other factors can

    affect this relationship. Some of these factors include surface texture, rust, oil, debris,

    material type, locking elements and human error.  Because of these variables, tightening to

    a specific torque setting can create varied results in the field or on the assembly line.
        General commodity commercial fasteners do not fall under the umbrella of products that

    would require a UL listing or ICC-ES report. There are three main governing bodies that

    cover specifications for fasteners. ASTM (American Society for Testing and Materials)

    covers primarily bolts and fasteners for construction applications. SAE (Society of

    Automotive Engineers) covers fasteners for automotive, machinery, and OEM applications.

    ASME (American Society of Mechanical Engineers) standards B18.2.1 and B18.2.1 cover

    dimensional tolerances for square and hex head bolts,

    Screws, and

    Nuts. Mudge Fasteners provides fasteners to

    these three sets of specifications (ASTM, SAE, and ASME). A fourth specification group that

    is also applicable is AASHTO (American Association of State Highway & Transportation

    Officials). AASHTO specifications are typically only called out on highway projects and

    many AASHTO designations can be directly converted to an ASTM equivalent.
        ICC (International Code Council) is the primary governing body responsible for writing

    and maintaining building, plumbing, mechanical, and fire codes adopted by local and state

    municipalities, and the federal government. ICC-ES (International Code Council-Evaluation

    Services, Inc.) is the branch of ICC responsible for performing technical evaluations of

    building products, components, methods, and materials to ensure that they meet the

    requirements of the codes. This evaluation process culminates in an ICC-ES report that

    provides evidence that the evaluated product or system meets code requirements. However, in

    the case of most anchor bolts and fasteners, the applicable sections of the codes

    (International Building Code, International Residential Code, International Property

    Maintenance Code, Etc.) direct you to the ASTM specifications covering said

    Anchors or fasteners. As the ASTM

    specifications already cover anchor bolts and fasteners in detail, there is no reason for

    ICC to write their own specifications for these items. For the same reason, ICC-ES does not

    need to perform evaluation testing of anchor bolts or fasteners. As long as the bolts meet

    the applicable ASTM specification(s), they will meet the applicable Code section(s).
        When you are shortening bolt or

    Threaded Rods
    with a hacksaw, you always mangle the threads at the sawn end, making

    it difficult to get a nut threaded onto it. Reader Larry LeMasters tip produces a much

    better ending. Thread two nuts onto the bolt at the cutoff spot, tighten them against each

    other, then saw against the shoulder to create a clean right-angled cut. Next, loosen the

    nuts and file a slight bevel around the end to clear burrs created by sawing. Then spin off

    the nuts to clean and realign the threads. Your shorter bolt will work just like a new one

    from the box.
        There are several distinct types of fastener, which may be referred to as a pin. These

    include small headless nails, sharpened pins used for holding fabrics while sewing,

    attaching paper to pinboards and the like, and several types of mechanical fasteners.

    Pins are an unthreaded mechanical

    fasteners, which are designed to be inserted through preformed holes.
        Lock Washers and vibration-resistant

    washers are designed to prevent a threaded fastener from loosening. The terms are often

    used interchangeably. However, there is a difference.
        Lock washers resist torque or loosening for a given preload, and vibration-resistant

    washers maintain a more constant preload when there’s movement in a joint. A lock washer

    may include some teeth to increase friction or tabs to provide positive locking. A

    vibration-resistant washer, on the other hand, will be sprung so that as the joint moves, a

    relatively consistent preload is maintained on the fastener.
        Rivets are mechanical fasteners with

    a plain unthreaded shaft that are inserted through holes to join two or more parts

    together. A permanently formed head at each end prevents the rivet from removal from the

    hole. The shaft prevents any radial movements of the components. Depending on the type of

    rivet, and its ability to support shear load, it can resist considerable forces. The heads

    prevent axial movements of the parts, although less force is supported in this way.       

        Greens Powder: Are there Health Benefits?
        Health Care Material is a

    dietary supplement that has become a popular way to help people reach their daily

    recommended intake of vitamins and minerals. The nutrient combination in greens powder is

    formulated to support your body’s immune system and energy levels while meeting the

    nutrition requirements for a healthy diet.
        Ingredients in greens powders vary by brand, but commonly include nutrition from:
                Leafy greens and seaweed
                Grasses and other vegetables
                Antioxidant-rich fruits
                Probiotics
                Nutritional extracts and herbs
            Cosmetics Material is

    most often mixed into water, smoothies, or juices. While these powders often come with a

    grassy taste, natural sugar substitutes like stevia extract are added to improve the

    flavor. These dietary powders are also usually vegan and made from non-genetically-modified

    and organic products.
        Nutrition Information
        Nutrition content in natural powders will vary

    by brand. On average, a one-tablespoon serving contains:
                Calories: 45
                Protein: 3 grams   
                Carbohydrates: 6 grams
                Iron: 18% of your daily value
                Vitamin A: 60% of your daily value
            Greens powders often include high levels of vitamin C, which has been linked to

    healthy immune system function, protection against heart disease, and good skin health.   
                Potential Health Benefits
                Because greens powders are made from dried fruits and vegetables, some

    important nutritional content like fiber is lost in the process. Greens powders are not a

    substitute for a well-balanced diet and cannot replace the nutritional benefits you get

    from consuming whole foods.
                However, doctors say that greens powder can be a great way to supplement a

    healthy diet with a boost of extra vitamins and antioxidants.
                Taking some vitamins in excess can lead to health issues or may interact with

    certain medications. It’s important to talk to your doctor before adding any nutritional

    supplements to your diet and choose a reputable brand of greens powder.
        The nutrients in greens powders can contribute to potential health benefits including:
        Healthy Blood Pressure
        Minerals found in Medicinal

    Material
    like calcium and potassium are associated with good blood pressure

    management. In one clinical study, people who took one serving daily of greens powder

    experienced a decrease in both their systolic and diastolic blood pressure。 
            Immune System Support   
            Greens powders contain high levels of vitamins and minerals associated with

    maintaining a healthy immune system. Vitamin A has anti-inflammatory properties that

    enhance immunity. For example, Selenium is found in most greens powders, and is proven to

    help the immune system fight infection。   
            Chronic Disease Prevention   
            The vitamins found in Feed

    Additives
    can reduce your risk of chronic diseases in the long term. Vitamins like C

    and K are potent antioxidants that fight cell-damaging free radicals.
            This cell damage is known as oxidation and is linked to the development of chronic

    diseases like diabetes and heart disease. One study found that a serving of greens powder

    taken daily reduced cell oxidation in participants by 30%.
            Eye and Cognitive Health
            Vitamin K found in leafy greens is associated with numerous health benefits

    including maintaining healthy blood vessels, lessening the risk of heart problems, and

    preventing bone loss with aging. Recent studies have also found vitamin K may promote eye

    health and reduce incidence of age-related dementia.
       

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